tag:dev.sinusoid.com,2005:/articles
Sinudev - Technical Notes : Sinudev - Technical Notes | sinusoid technical area - microcontrollers
sinusoid technical area - microcontrollers
2016-06-02T13:21:05Z
Typo
urn:uuid:df2bab2c-f5c4-4d67-8b66-9adcc0774678
2016-06-02T13:02:23Z
2016-06-02T13:21:05Z
marklvit
Sinusoid rotary position encoders - RPE3-8 and RPE3-635. 4-20mA output
<p>Sinusoid releases 2 new rotary encoders – RPE3-8 and RPE3-635. Both have 4-20mA current output and a wide voltage supply range of 12-28V.</p>
<p><a href="http://www.prnewswire.com/news-releases/sinusoid-pty-ltd-introduces-rpe3-multi-turn-4-20ma-rotary-encoder-300278417.html?tc=eml_cleartime" target="_blank">Press release is here</a></p>
<p>Both new models and other rotary encoders, RPE1 and RPE2 are available directly from the Sinusoid <a href="http://store.sinusoid.com/encoders/encoders-rotary/">website</a>.</p>
<p><img src="http://photos.prnewswire.com/prnvar/20160601/374155?max=650" alt="RPE3-8 and RPE3-635 rotary encoders with 4-20mA current output." style="width: 50%; height: 50%" /></p><hr /><p><small>Original article writen by marklvit and published on <a href='http://dev.sinusoid.com'>Sinudev - Technical Notes</a> | <a href='http://dev.sinusoid.com/2016/06/02/sinusoid-rotary-position-encoders-rpe3-8-and-rpe3-635-4-20ma-output'>direct link to this article</a> | If you are reading this article elsewhere than <a href='http://dev.sinusoid.com'>Sinudev - Technical Notes</a>, it has been illegally reproduced and without proper authorization.</small></p>
urn:uuid:7d723308-50f4-4d93-93de-b637c04cdf0d
2016-04-08T05:32:09Z
2016-04-08T06:00:49Z
marklvit
Audio Kit 2.0 release includes audio sweep generator
<p>
<p>Audio Kit 2.0 release from Sinusoid includes audio sweep generator as an in-app purchase.</p><br />
<p><br />
The sweep generator allows sweep or chirp of audio frequencies in either increasing or decreasing direction.</p><br />
<p><br />
Length of sweep can be specified up to 20 seconds, and down to very short intervals. Sweep output can be either linear of exponential. </p><br />
<p><br />
<a href="http://a5.mzstatic.com/us/r30/Purple49/v4/14/32/d6/1432d6ac-e5e4-a5eb-8856-e53e32d0afe9/screen520x924.jpeg" onclick="window.open('http://a5.mzstatic.com/us/r30/Purple49/v4/14/32/d6/1432d6ac-e5e4-a5eb-8856-e53e32d0afe9/screen520x924.jpeg','popup','width=480,height=300,scrollbars=no,resizable=yes,toolbar=no,directories=no,location=no,menubar=no,status=yes,left=0,top=0');return false"><img alt="Audio Kit Sweep generator" border="1" height="200" hspace="4" src="http://a5.mzstatic.com/us/r30/Purple49/v4/14/32/d6/1432d6ac-e5e4-a5eb-8856-e53e32d0afe9/screen520x924.jpeg" title="Audio Kit Sweep generator" vspace="4" width="320" /></a> <a href="http://a3.mzstatic.com/us/r30/Purple49/v4/1a/d3/a4/1ad3a4f6-81e9-96be-66b7-2e759d9403ac/screen520x924.jpeg" onclick="window.open('http://a3.mzstatic.com/us/r30/Purple49/v4/1a/d3/a4/1ad3a4f6-81e9-96be-66b7-2e759d9403ac/screen520x924.jpeg','popup','width=480,height=300,scrollbars=no,resizable=yes,toolbar=no,directories=no,location=no,menubar=no,status=yes,left=0,top=0');return false"><img alt="Audio Kit Sweep generator" border="1" height="200" hspace="4" src="http://a3.mzstatic.com/us/r30/Purple49/v4/1a/d3/a4/1ad3a4f6-81e9-96be-66b7-2e759d9403ac/screen520x924.jpeg" title="Audio Kit Sweep generator" vspace="4" width="320" /></a></p></p>
<p>Audio Kit Features include:<br />
<ul><br />
<li> New – Sweep generator available as In-App purchase</li><br />
<li> View a real time spectrum of audio with the Spectrum Analyser and identify peak frequencies precisely</li><br />
<li> The Signal Generator provides a sine wave output up to 20,000Hz in 1 Hz steps, along with noise generators for white and pink noise and sweep (<span class="caps">IAP</span>)</li><br />
<li> View the actual waveform of the audio signal with the Scope</li><br />
<li> An <span class="caps">SPL</span> Meter provides measurement of sound levels using an A-weighting. Calibration of <span class="caps">SPL</span> Meter</li></p>
</ul>
<p>
<p>Full press release is <a href="http://prmac.com/release-id-79169.htm">here.</a></p><br />
<p><br />
See the <a href="http://store.sinusoid.com/catalog/software/iphone-apps/audio-kit.html">Sinusoid web site</a> for more information or this direct link to <a href="http://store.sinusoid.com/iTunes_AudioKit.html">iTunes App store.</a> <a href="http://store.sinusoid.com/iTunes_AudioKit.html"><img src="http://dev.sinusoid.com/files/AKIcon-tm.jpg" /></a></p><br />
<p><br />
</p></p><hr /><p><small>Original article writen by marklvit and published on <a href='http://dev.sinusoid.com'>Sinudev - Technical Notes</a> | <a href='http://dev.sinusoid.com/2016/04/08/audio-kit-2-0-release-includes-audio-sweep-generator'>direct link to this article</a> | If you are reading this article elsewhere than <a href='http://dev.sinusoid.com'>Sinudev - Technical Notes</a>, it has been illegally reproduced and without proper authorization.</small></p>
urn:uuid:863e84fd-d6b0-49dc-86fd-78e26a23c8f9
2014-05-09T08:34:12Z
2014-05-21T02:52:38Z
marklvit
Sonocord - Audio sonogram App for iOS from Sinusoid
<h4> <a href="http://store.sinusoid.com/software/iphone-apps/sonocord.html">Sonocord</a> is a tool which can record short audio tracks, edit them, and display the sonogram of the audio.</h4>
<p>It is an invaluable tool for those investigating bird calls and bird song, whether in the field, at home, or in the lab.<br />
<ul><br />
<li><span style="font-family: arial, helvetica, sans-serif; font-size: small;">Produce an audio sonogram of tracks up to 10 seconds in length</span></li><br />
<li><span style="font-family: arial, helvetica, sans-serif; font-size: small;">Record new tracks up to 10 seconds long, including a 2 second pre-record arm feature </span></li><br />
<li><span style="font-family: arial, helvetica, sans-serif; font-size: small;">Import short audio tracks to be displayed as a sonogram</span></li><br />
<li><span style="font-family: arial, helvetica, sans-serif; font-size: small;">Storage of multiple tracks for sonogram display, playing and editing.</span></li><br />
<li><span style="font-family: arial, helvetica, sans-serif; font-size: small;">Simple edit of both recorded and imported audio tracks by trimming tracks.</span></li><br />
<li><span style="font-family: arial, helvetica, sans-serif; font-size: small;">Play both recorded and imported audio tracks</span></li><br />
<li><span style="font-family: arial, helvetica, sans-serif; font-size: small;">A location is recorded where available on a device, and a map view will display the location of the recording if available</span></li></p>
</ul>
<p><img src="/images/sonocord/SONO-4-med.png" alt="Sonocord - Audio sonogram app for iOS / iPhone from Sinusoid Mapview" /><br />
<img src="/images/sonocord/RTVC-4-med.png" alt="Sonocord - Audio sonogram app for iOS / iPhone from Sinusoid Mapview" /><br />
<img src="/images/sonocord/RVC-4-med.png" alt="Sonocord - Audio sonogram app for iOS / iPhone from Sinusoid Mapview" /><br />
<img src="/images/sonocord/MAPVIEW-4-med.png" alt="Sonocord - Audio sonogram app for iOS / iPhone from Sinusoid Mapview" /><br />
<br>
<p><span style="font-size: medium;"><a href="http://store.sinusoid.com/iTunes_Sonocord.html"><img src="http://store.sinusoid.com/images/app_store_badge_en_400x200.png" alt="" width="200" height="100" /></a><span style="font-family: arial, helvetica, sans-serif;"> </span></span></p></p><hr /><p><small>Original article writen by marklvit and published on <a href='http://dev.sinusoid.com'>Sinudev - Technical Notes</a> | <a href='http://dev.sinusoid.com/2014/05/09/test'>direct link to this article</a> | If you are reading this article elsewhere than <a href='http://dev.sinusoid.com'>Sinudev - Technical Notes</a>, it has been illegally reproduced and without proper authorization.</small></p>
urn:uuid:4dd89559-ca8d-49bc-a81d-3c95c4756d30
2012-09-20T05:14:49Z
2013-02-05T12:08:36Z
marklvit
New range of rotary encoders available from Sinusoid
<p>
<a href="http://store.sinusoid.com/encoders/">Sinusoid Pty Ltd</a> has just released new range of its rotary encoders. They offer 10 bit resolution and come in several output formats. These are based on contactless magnetic encoder chips from <a href="http://www.austriamicrosystems.com/">Austriamicrosystems</a>.<br />
<a href="http://dev.sinusoid.com/files/rpe1-press2.gif" onclick="window.open('http://dev.sinusoid.com/files/rpe1-press2.gif','popup','width=1024,height=658,scrollbars=no,resizable=yes,toolbar=no,directories=no,location=no,menubar=no,status=yes,left=0,top=0');return false"><img alt="Rotary Encoder analog" border="1" height="200" hspace="4" src="http://dev.sinusoid.com/files/rpe1-press2-tm.jpg" vspace="4" width="311" /></a></p>
<p>
Manufactured in rugged anodised aluminium and built with dual ball bearings they offer high speed continuous rotation up to 7500rpm.</p>
<p>
There is a v-ring seal which provides IP50 ingress protection for speeds up to 3000rpm.
This seal can be removed to allow continuous rotation up to 7500rpm.</p>
<p>
All the RPE rotary encoders from Sinusoid are made in Australia.</p>
<p>
Two main models are available - RPE1 with absolute analog output, and RPE2 with a combination of incremental quadrature with index and absolute PWM output.</p>
<p>
The RPE1 has absolute analog output with a 10bit output voltage from 0-VDD, where VDD is the supply voltage - nominally 5V. The output increases linearly for a clockwise rotation.</p>
<p>
RPE2 provides:</p>
<ul>
<li>
Incremental quadrature A/B with 256ppr and an index pulse signal</li>
<li>
Absolute 10bit PWM with typical signal period of 1025µs and pulse widths varying from 1-1024µs</li>
</ul>
<p>
Within these two main models, shafts are available in 6.35mm or 8mm diameter. Mounting is via 3 M3 screws suitable for a flange mount.</p>
<p>
Termination is a 580mm flying lead with colour coded conductors.</p>
<p>
Typical applications are robotics, digital potentiometer, angular position indicators, shaft speed measurement, front panel switches, wheel position sensors.</p>
<p>
All the Sinusoid encoders are RoHS compliant.</p>
<p>
Sinusoid Pty Ltd is based in Sydney, Australia.</p>
<p>
For more information, data sheets or to purchase, visit: <a href="http://store.sinusoid.com/encoders/encoders-rotary/">http://store.sinusoid.com/encoders/encoders-rotary/</a></p>
<hr /><p><small>Original article writen by marklvit and published on <a href='http://dev.sinusoid.com'>Sinudev - Technical Notes</a> | <a href='http://dev.sinusoid.com/2012/09/20/new-range-of-rotary-encoders-available-from-sinusoid'>direct link to this article</a> | If you are reading this article elsewhere than <a href='http://dev.sinusoid.com'>Sinudev - Technical Notes</a>, it has been illegally reproduced and without proper authorization.</small></p>
urn:uuid:7aebfa9d-47ff-4f72-a335-1cac3bc673ad
2011-08-20T11:53:23Z
2012-08-12T00:14:35Z
marklvit
New Audio Kit demonstration video
<p>Dailyappshow have just shot a video demonstrating the features of Sinusoid’s Audio Kit app for iOS devices.</p>
<p>
<p>See it on the <a href="http://dailyappshow.com/audio-kit">Dailyappshow website</a> or on <a href="http://youtu.be/S7fGvEMs1n4">Youtube</a>.</p>
</p>
<p><a href="http://store.sinusoid.com/iTunes_AudioKit.html"><br />
<img src="http://dev.sinusoid.com/files/App_Store_Badge_EN_188_65.png" height="65" width="188" border="1" hspace="4" vspace="4" alt="App Store Badge En 188 65" /></a></p>
<p>Audio Kit is now at release version 1.5</p>
<p>
<p>The App includes the following tools:</p>
<ul><li>A real time <strong>Spectrum Analyser</strong></li>
<li><strong>Scope</strong> – an oscilloscope to display waveforms</li>
<li>an <strong><span class="caps">SPL</span></strong> (sound pressure level)<strong> Meter</strong></li>
<li>and a sine wave <strong>Signal Generator</strong></li>
</ul>
<p>Since the first release the following features have been added:</p>
<p>
<ul>
<li>Enhanced frequency calculation improves resolution of peaks to within 1Hz.</li>
<li>Single tap to freeze Spectrum screen. Can be disabled in preferences.</li>
<li><span class="caps">SPL</span> meter has a continuous ticker style trace of the <span class="caps">SPL</span> over time.</li>
<li>Improved sine wave generation.</li>
<li>Signal Generator now includes white noise and pink noise signal types, in addition to the existing sine wave signal.</li>
<li>Spectrum display has 6 selectable <span class="caps">FFT</span> window function types – Hamming, Hann, Rectangular, Bartlett, Triangular and Blackman.</li>
<li>Spectrum now has selectable <span class="caps">FFT</span> sizes of 8192, 4096 and 2048, giving much better resolution of frequencies.</li>
<li>Persistent settings for all user preferences.<br />
All of the user preferences in each of the above applications can be made persistent between restarts of the App.</li>
<li>Large number display of strongest frequency in Spectrum display. This is in addition to the small moving text above the peak, and can be quickly turned on or off.</li>
</ul>
<p>Common uses for this App include:<br />
<ul> <br />
<li>checking for feedback and resonance frequencies when setting up PA systems</li><br />
<li>an inexpensive oscilloscope to view audio waveforms</li><br />
<li>measuring sound pressure levels</li><br />
<li>providing audio test signals</li></p>
</ul>
<p><a href="http://dev.sinusoid.com/files/spectSS1_4.png" onclick="window.open('http://dev.sinusoid.com/files/spectSS1_4.png','popup','width=480,height=300,scrollbars=no,resizable=yes,toolbar=no,directories=no,location=no,menubar=no,status=yes,left=0,top=0');return false"><img src="http://dev.sinusoid.com/files/spectSS1_4-tm.jpg" height="200" width="320" border="1" hspace="4" vspace="4" alt="Audio Kit Spectrum Screen Shot 1.4" title="Audio Kit Spectrum Screen Shot 1.4" /></a></p>
<p><a href="http://dev.sinusoid.com/files/settingsSS1_4.png" onclick="window.open('http://dev.sinusoid.com/files/settingsSS1_4.png','popup','width=480,height=300,scrollbars=no,resizable=yes,toolbar=no,directories=no,location=no,menubar=no,status=yes,left=0,top=0');return false"><img src="http://dev.sinusoid.com/files/settingsSS1_4-tm.jpg" height="200" width="320" border="1" hspace="4" vspace="4" alt="Audio Kit Settings Screen Shot 1.4" title="Audio Kit Settings Screen Shot 1.4" /></a></p>
<p><a href="http://dev.sinusoid.com/files/siggenSS1_4.png" onclick="window.open('http://dev.sinusoid.com/files/siggenSS1_4.png','popup','width=480,height=300,scrollbars=no,resizable=yes,toolbar=no,directories=no,location=no,menubar=no,status=yes,left=0,top=0');return false"><img src="http://dev.sinusoid.com/files/siggenSS1_4-tm.jpg" height="200" width="320" border="1" hspace="4" vspace="4" alt="Audio Kit 1.4 Signal Generator" title="Audio Kit 1.4 Signal Generator" /></a></p>
<p><a href="http://dev.sinusoid.com/files/scopeSS1_4.png" onclick="window.open('http://dev.sinusoid.com/files/scopeSS1_4.png','popup','width=480,height=300,scrollbars=no,resizable=yes,toolbar=no,directories=no,location=no,menubar=no,status=yes,left=0,top=0');return false"><img src="http://dev.sinusoid.com/files/scopeSS1_4-tm.jpg" height="200" width="320" border="1" hspace="4" vspace="4" alt="Audio Kit 1.4 Scope Screen Shot" title="Audio Kit 1.4 Scope Screen Shot" /></a></p>
<p><a href="http://dev.sinusoid.com/files/splS1_4.png" onclick="window.open('http://dev.sinusoid.com/files/splS1_4.png','popup','width=480,height=300,scrollbars=no,resizable=yes,toolbar=no,directories=no,location=no,menubar=no,status=yes,left=0,top=0');return false"><img src="http://dev.sinusoid.com/files/splS1_4-tm.jpg" height="200" width="320" border="1" hspace="4" vspace="4" alt="Audio Kit 1.4 SPL Meter Screen Shot" title="Audio Kit 1.4 SPL Meter Screen Shot" /></a></p>
<p>
<p>See the <a href="http://store.sinusoid.com/catalog/software/iphone-apps/audio-kit.html">Sinusoid web site</a> for more information or this direct link to<br />
<a href="http://store.sinusoid.com/iTunes_AudioKit.html">iTunes App store.</a> <br />
<a href="http://store.sinusoid.com/iTunes_AudioKit.html"><img src=“http://dev.sinusoid.com/files/AKIcon-tm.jpg”</a></p>
</p><hr /><p><small>Original article writen by marklvit and published on <a href='http://dev.sinusoid.com'>Sinudev - Technical Notes</a> | <a href='http://dev.sinusoid.com/2011/08/20/new-audio-kit-demonstration-video'>direct link to this article</a> | If you are reading this article elsewhere than <a href='http://dev.sinusoid.com'>Sinudev - Technical Notes</a>, it has been illegally reproduced and without proper authorization.</small></p>
urn:uuid:1c1ecfeb-d67b-42b0-a465-a63b192c0b5e
2011-03-11T12:38:47Z
2012-08-12T00:28:19Z
marklvit
AKLite Initial release
<p>
<p>Sinusoid Pty Ltd announces the initial release of <a href="http://store.sinusoid.com/catalog/software/iphone-apps/aklite.html">AKLite iPhone App</a> .</p>
</p>
<p>
<p>AKLite is a real time spectrum analyzer. It is a lite version of the Spectrum part of <a href="http://store.sinusoid.com/iTunes_AudioKit.html">Audio Kit iPhone App</a>, also by Sinusoid Pty Ltd.</p>
</p>
<p>
<p>As an introduction to the Audio Kit App, AKLite is free of charge.</p>
</p>
<p><a href="http://dev.sinusoid.com/files/SShot11.png" onclick="window.open('http://dev.sinusoid.com/files/SShot11.png','popup','width=480,height=300,scrollbars=no,resizable=yes,toolbar=no,directories=no,location=no,menubar=no,status=yes,left=0,top=0');return false"><img src="http://dev.sinusoid.com/files/SShot1-tm.jpg" height="200" width="320" border="1" hspace="4" vspace="4" alt="FFT Spectrum of AKLite" /></a></p>
<p>
<p><span class="caps">FFT</span> (Fast Fourier Transform) is used to calculate the frequencies in the Spectrum Analyser and these are displayed in real time. The frequency is displayed in either logarithmic or linear scale.</p>
</p>
<p>
<p>The area under the line trace can be optionally filled or left blank.</p>
</p>
<p>
<p>The <span class="caps">FFT</span> length used in AKLite is 2048, giving good resolution of frequencies. Interpolation gives resolution to within 1Hz.</p>
</p>
<p>
<p>A Bartlett <span class="caps">FFT</span> window type is used for calculations and there are 3 <span class="caps">FFT</span> windows used.</p>
</p>
<p><a href="http://dev.sinusoid.com/files/SShot2.png" onclick="window.open('http://dev.sinusoid.com/files/SShot2.png','popup','width=480,height=300,scrollbars=no,resizable=yes,toolbar=no,directories=no,location=no,menubar=no,status=yes,left=0,top=0');return false"><img src="http://dev.sinusoid.com/files/SShot2-tm.jpg" height="200" width="320" border="1" hspace="4" vspace="4" alt="FFT Spectrum of AKLite" /></a></p>
<p><a href="http://dev.sinusoid.com/files/SShot3.png" onclick="window.open('http://dev.sinusoid.com/files/SShot3.png','popup','width=480,height=300,scrollbars=no,resizable=yes,toolbar=no,directories=no,location=no,menubar=no,status=yes,left=0,top=0');return false"><img src="http://dev.sinusoid.com/files/SShot3-tm.jpg" height="200" width="320" border="1" hspace="4" vspace="4" alt="FFT Spectrum of AKLite" /></a></p>
<p><br>
See the <a href="http://store.sinusoid.com/catalog/software/iphone-apps/aklite.html">Sinusoid web site</a> for more information or this direct link to<br />
<a href="http://store.sinusoid.com/iTunes_AKLite.html">iTunes App store.</a> <br />
<a href="http://store.sinusoid.com/iTunes_AKLite.html"><img src="http://a2.mzstatic.com/us/r1000/004/Purple/1e/3d/09/mzi.gopiigky.175x175-75.jpg" width="90" height="90" /></a></p>
</p><hr /><p><small>Original article writen by marklvit and published on <a href='http://dev.sinusoid.com'>Sinudev - Technical Notes</a> | <a href='http://dev.sinusoid.com/2011/03/11/aklite-initial-release'>direct link to this article</a> | If you are reading this article elsewhere than <a href='http://dev.sinusoid.com'>Sinudev - Technical Notes</a>, it has been illegally reproduced and without proper authorization.</small></p>
urn:uuid:d674c874-6c3f-47a1-99d0-3458e89b83bb
2011-01-24T17:39:51Z
2012-05-05T03:50:50Z
marklvit
Sinusoid Apps now back on iTunes Store
<h2>All Sinusoid iPhone Apps are now back on the iTunes App Store now.
</h2>
<br>
After a few days away from the store due to circumstances beyond our control, the following three Sinusoid iPhone/iOS Apps are again available on the iTunes Store:
<br>
<p>
<h2><a href="http://store.sinusoid.com/iTunes_AudioKit.html" title="Audio Kit">Audio Kit</a></h2><h4> is a collection of four tools which are essential for those working in audio, sound and music; A real time Spectrum Analyzer, a Scope to display waveforms, an SPL Meter, and a Signal Generator producing sine waves, white noise and pink noise. Users can view a real time spectrum of audio, identifying peak frequencies, as well as view the actual waveform of the audio signal and much more.</h4>
<br>
<a href="http://store.sinusoid.com/iTunes_AudioKit.html" onclick="window.open('http://store.sinusoid.com/iTunes_AudioKit.html','popup','width=480,height=300,scrollbars=no,resizable=yes,toolbar=no,directories=no,location=no,menubar=no,status=yes,left=0,top=0');return false"><img src="http://dev.sinusoid.com/files/_files_spectSS1_4-tm.jpg" height="200" width="320" border="1" hspace="4" vspace="4" alt=" Files Spectss1 4" /></a>
</p>
<hr/>
<br>
<p><h2>
<a href="http://itunes.apple.com/au/app/snappix/id409667874?mt=8" title="Snappix">Snappix</a> </h2><h4>allows you to quickly take four shots from the camera in quick succession, put them in the same frame, and quickly send them via email to friends or to facebook directly without leaving the App. The picture frame can be either 2 x 2 as in a passport photograph, or in a 1 x 4 strip as in a photo booth strip of pictures. Both portrait and landscape shots can be mixed within the one frame.
</h4> <br><p>
<a href="http://itunes.apple.com/au/app/snappix/id409667874?mt=8" onclick="window.open('http://itunes.apple.com/au/app/snappix/id409667874?mt=8','popup','width=320,height=460,scrollbars=no,resizable=yes,toolbar=no,directories=no,location=no,menubar=no,status=yes,left=0,top=0');return false"><img src="http://dev.sinusoid.com/files/_images_detailed_shootSS1.0b-1-tm.jpg" height="300" width="208" border="1" hspace="4" vspace="4" alt=" Images Detailed Shootss1.0B-1" /></a>
<a href="http://itunes.apple.com/au/app/snappix/id409667874?mt=8" onclick="window.open('http://itunes.apple.com/au/app/snappix/id409667874?mt=8','popup','width=320,height=460,scrollbars=no,resizable=yes,toolbar=no,directories=no,location=no,menubar=no,status=yes,left=0,top=0');return false"><img src="http://dev.sinusoid.com/files/_images_detailed_shootSS1.0a-tm.jpg" height="300" width="208" border="1" hspace="4" vspace="4" alt=" Images Detailed Shootss1.0A" /></a>
</p>
<hr>
<br>
<p>
<h2> <a href="http://itunes.apple.com/au/app/lightning-thunder/id364871693?mt=8">Lightning & Thunder</a> </h2><h4> is an entertainment iPhone App allowing for the simulation of lightning strikes and thunder using fingers on the touch screen.
</h4>
<a href="http://itunes.apple.com/au/app/lightning-thunder/id364871693?mt=8" onclick="window.open('http://itunes.apple.com/au/app/lightning-thunder/id364871693?mt=8g','popup','width=320,height=460,scrollbars=no,resizable=yes,toolbar=no,directories=no,location=no,menubar=no,status=yes,left=0,top=0');return false"><img src="http://dev.sinusoid.com/files/_images_detailed_Screenshot1-tm.jpg" height="300" width="208" border="1" hspace="4" vspace="4" alt=" Images Detailed Screenshot1" /></a>
<p><hr /><p><small>Original article writen by marklvit and published on <a href='http://dev.sinusoid.com'>Sinudev - Technical Notes</a> | <a href='http://dev.sinusoid.com/2011/01/24/sinusoid-apps-now-back-on-itunes-store'>direct link to this article</a> | If you are reading this article elsewhere than <a href='http://dev.sinusoid.com'>Sinudev - Technical Notes</a>, it has been illegally reproduced and without proper authorization.</small></p>
urn:uuid:f5d6bcfc-c86f-4d05-8483-52eb02cd6367
2010-12-11T01:03:17Z
2012-08-12T00:29:16Z
marklvit
iPhone Audio Kit update 1.4
<p>The <a href="http://store.sinusoid.com/iTunes_AudioKit.html">Audio Kit iPhone App</a> from Sinusoid Pty Ltd has a new release, version 1.4<br />
<br>
<p>The App includes the following tools:</p>
</p>
<ul><li>A real time <strong>Spectrum Analyser</strong></li>
<li><strong>Scope</strong> – an oscilloscope to display waveforms</li>
<li>an <strong><span class="caps">SPL</span></strong> (sound pressure level)<strong> Meter</strong></li>
<li>and a sine wave <strong>Signal Generator</strong></li>
</ul>
<p>Since the first release the following features have been added:</p>
<p>
<ul>
<li>Enhanced frequency calculation improves resolution of peaks to within 1Hz.</li>
<li>Single tap to freeze Spectrum screen. Can be disabled in preferences.</li>
<li><span class="caps">SPL</span> meter has a continuous ticker style trace of the <span class="caps">SPL</span> over time.</li>
<li>Improved sine wave generation.</li>
<li>Signal Generator now includes white noise and pink noise signal types, in addition to the existing sine wave signal.</li>
<li>Spectrum display has 6 selectable <span class="caps">FFT</span> window function types – Hamming, Hann, Rectangular, Bartlett, Triangular and Blackman.</li>
<li>Spectrum now has selectable <span class="caps">FFT</span> sizes of 8192, 4096 and 2048, giving much better resolution of frequencies.</li>
<li>Persistent settings for all user preferences.<br />
All of the user preferences in each of the above applications can be made persistent between restarts of the App.</li>
<li>Large number display of strongest frequency in Spectrum display. This is in addition to the small moving text above the peak, and can be quickly turned on or off.</li>
</ul>
<p>Common uses for this App include:<br />
<ul> <br />
<li>checking for feedback and resonance frequencies when setting up PA systems</li><br />
<li>an inexpensive oscilloscope to view audio waveforms</li><br />
<li>measuring sound pressure levels</li><br />
<li>providing audio test signals</li></p>
</ul>
<p><a href="http://dev.sinusoid.com/files/spectSS1_4.png" onclick="window.open('http://dev.sinusoid.com/files/spectSS1_4.png','popup','width=480,height=300,scrollbars=no,resizable=yes,toolbar=no,directories=no,location=no,menubar=no,status=yes,left=0,top=0');return false"><img src="http://dev.sinusoid.com/files/spectSS1_4-tm.jpg" height="200" width="320" border="1" hspace="4" vspace="4" alt="Audio Kit Spectrum Screen Shot 1.4" title="Audio Kit Spectrum Screen Shot 1.4" /></a></p>
<p><a href="http://dev.sinusoid.com/files/settingsSS1_4.png" onclick="window.open('http://dev.sinusoid.com/files/settingsSS1_4.png','popup','width=480,height=300,scrollbars=no,resizable=yes,toolbar=no,directories=no,location=no,menubar=no,status=yes,left=0,top=0');return false"><img src="http://dev.sinusoid.com/files/settingsSS1_4-tm.jpg" height="200" width="320" border="1" hspace="4" vspace="4" alt="Audio Kit Settings Screen Shot 1.4" title="Audio Kit Settings Screen Shot 1.4" /></a></p>
<p><a href="http://dev.sinusoid.com/files/siggenSS1_4.png" onclick="window.open('http://dev.sinusoid.com/files/siggenSS1_4.png','popup','width=480,height=300,scrollbars=no,resizable=yes,toolbar=no,directories=no,location=no,menubar=no,status=yes,left=0,top=0');return false"><img src="http://dev.sinusoid.com/files/siggenSS1_4-tm.jpg" height="200" width="320" border="1" hspace="4" vspace="4" alt="Audio Kit 1.4 Signal Generator" title="Audio Kit 1.4 Signal Generator" /></a></p>
<p><a href="http://dev.sinusoid.com/files/scopeSS1_4.png" onclick="window.open('http://dev.sinusoid.com/files/scopeSS1_4.png','popup','width=480,height=300,scrollbars=no,resizable=yes,toolbar=no,directories=no,location=no,menubar=no,status=yes,left=0,top=0');return false"><img src="http://dev.sinusoid.com/files/scopeSS1_4-tm.jpg" height="200" width="320" border="1" hspace="4" vspace="4" alt="Audio Kit 1.4 Scope Screen Shot" title="Audio Kit 1.4 Scope Screen Shot" /></a></p>
<p><a href="http://dev.sinusoid.com/files/splS1_4.png" onclick="window.open('http://dev.sinusoid.com/files/splS1_4.png','popup','width=480,height=300,scrollbars=no,resizable=yes,toolbar=no,directories=no,location=no,menubar=no,status=yes,left=0,top=0');return false"><img src="http://dev.sinusoid.com/files/splS1_4-tm.jpg" height="200" width="320" border="1" hspace="4" vspace="4" alt="Audio Kit 1.4 SPL Meter Screen Shot" title="Audio Kit 1.4 SPL Meter Screen Shot" /></a></p>
<p>
<p>See the <a href="http://store.sinusoid.com/catalog/software/iphone-apps/audio-kit.html">Sinusoid web site</a> for more information or this direct link to<br />
<a href="http://store.sinusoid.com/iTunes_AudioKit.html">iTunes App store.</a> <br />
<a href="http://store.sinusoid.com/iTunes_AudioKit.html"><img src="http://dev.sinusoid.com/files/AKIcon-tm.jpg" /></a></p>
</p>
<p><a href="http://dev.sinusoid.com/articles/2010/09/16/iphone-audio-kit-update-1-3">Audio Kit 1.3 Release</a></p><hr /><p><small>Original article writen by marklvit and published on <a href='http://dev.sinusoid.com'>Sinudev - Technical Notes</a> | <a href='http://dev.sinusoid.com/2010/12/11/iphone-audio-kit-update-1-4'>direct link to this article</a> | If you are reading this article elsewhere than <a href='http://dev.sinusoid.com'>Sinudev - Technical Notes</a>, it has been illegally reproduced and without proper authorization.</small></p>
urn:uuid:4cd81437-2d4b-40a5-8063-95429063a3dc
2010-11-15T23:59:41Z
2012-05-05T03:50:50Z
marklvit
Audio Kit used in noise measurement
<p>
This <a href="http://www.dinside.no/855961/sjekk-stoyen-med-iphone" title="Norwegian article about Audio Kit">Norwegian article</a> describes using Audio Kit for the measurement of noise. It describes using the Spectrum Analyser and SPL Meter in the Audio Kit App to measure and discriminate different noise types.
</p>
<p>A translation to English is provided by <a href="http://translate.google.com/translate?hl=en&sl=no&tl=en&u=http%3A%2F%2Fwww.dinside.no%2F855961%2Fsjekk-stoyen-med-iphone" title="Translation of Norwegian article about Audio Kit">google</a>.
</p>
<p>
The current release of Audio Kit is 1.3.1 and details can be found <a href="http://dev.sinusoid.com/articles/2010/09/16/iphone-audio-kit-update-1-3" title="Translation of Norwegian article about Audio Kit">here</a>
</p>
<p>The next release of Audio Kit, 1.4 is due in early December 2010.</p>
<a href="http://dev.sinusoid.com/files/SPLss.png" onclick="window.open('http://dev.sinusoid.com/files/SPLss.png','popup','width=480,height=300,scrollbars=no,resizable=yes,toolbar=no,directories=no,location=no,menubar=no,status=yes,left=0,top=0');return false"><img src="http://dev.sinusoid.com/files/SPLss-tm.jpg" height="200" width="320" border="1" hspace="4" vspace="4" alt="Splss" /></a>
<a href="http://dev.sinusoid.com/files/spectss-1.png" onclick="window.open('http://dev.sinusoid.com/files/spectss-1.png','popup','width=480,height=300,scrollbars=no,resizable=yes,toolbar=no,directories=no,location=no,menubar=no,status=yes,left=0,top=0');return false"><img src="http://dev.sinusoid.com/files/spectss-1-tm.jpg" height="200" width="320" border="1" hspace="4" vspace="4" alt="Spectss-1" /></a>
<a href="http://store.sinusoid.com/iTunes_AudioKit.html"><img src="http://dev.sinusoid.com/files/AKIcon-tm.jpg"</a> <a href="http://store.sinusoid.com/iTunes_AudioKit.html">Audio Kit on iTunes App store.</a>
<hr /><p><small>Original article writen by marklvit and published on <a href='http://dev.sinusoid.com'>Sinudev - Technical Notes</a> | <a href='http://dev.sinusoid.com/2010/11/15/audio-kit-used-in-noise-measurement'>direct link to this article</a> | If you are reading this article elsewhere than <a href='http://dev.sinusoid.com'>Sinudev - Technical Notes</a>, it has been illegally reproduced and without proper authorization.</small></p>
urn:uuid:2619e679-1de3-42fe-bfff-03c878477e17
2010-09-16T12:29:53Z
2019-05-07T00:03:56Z
marklvit
iPhone Audio Kit update 1.3
<p>The <a href="http://store.sinusoid.com/iTunes_AudioKit.html">Audio Kit iPhone App</a> from Sinusoid Pty Ltd has a new release, version 1.3.<br />
<br>
<p>The <a href="http://dev.sinusoid.com/articles/2010/06/18/audio-kit-new-iphone-app-from-sinusoid">first version 1.0</a> included the following applications:</p>
</p>
<ul><li>A real time <strong>Spectrum Analyser</strong></li>
<p><li<strong>Scope</strong> – an oscilloscope to display waveforms</li> <br />
<li>an <strong><span class="caps">SPL</span></strong> (sound pressure level)<strong> Meter</strong></li><br />
<li>and a sine wave <strong>Signal Generator</strong></li></p>
</ul>
<p>Since the first release the following features have been added:</p>
<p>
<ul>
<li>Signal Generator now includes white noise and pink noise signal types, in addition to the existing sine wave signal.</li>
<li>Spectrum display has 6 selectable <span class="caps">FFT</span> window function types – Hamming, Hann, Rectangular, Bartlett, Triangular and Blackman.</li>
<li>Spectrum now has selectable <span class="caps">FFT</span> sizes of 8192, 4096 and 2048, giving much better resolution of frequencies.</li>
<li>Persistent settings for all user preferences.<br />
All of the user preferences in each of the above applications can be made persistent between restarts of the App.</li>
<li>Large number display of strongest frequency in Spectrum display. This is in addition to the small moving text above the peak, and can be quickly turned on or off.</li>
</ul>
<p>Common uses for this App include:<br />
<ul> <br />
<li>checking for feedback frequencies when setting up PA systems</li><br />
<li>an inexpensive oscilloscope to view audio waveforms</li><br />
<li>measuring sound pressure levels</li><br />
<li>providing audio test signals</li></p>
</ul>
<p><a href="http://dev.sinusoid.com/files/spectss.png" onclick="window.open('http://dev.sinusoid.com/files/spectss.png','popup','width=480,height=300,scrollbars=no,resizable=yes,toolbar=no,directories=no,location=no,menubar=no,status=yes,left=0,top=0');return false"><img src="http://dev.sinusoid.com/files/spectss-tm.jpg" height="200" width="320" border="1" hspace="4" vspace="4" alt="Spectss" /></a></p>
<p><a href="http://dev.sinusoid.com/files/spsettingsss.png" onclick="window.open('http://dev.sinusoid.com/files/spsettingsss.png','popup','width=480,height=300,scrollbars=no,resizable=yes,toolbar=no,directories=no,location=no,menubar=no,status=yes,left=0,top=0');return false"><img src="http://dev.sinusoid.com/files/spsettingsss-tm.jpg" height="200" width="320" border="1" hspace="4" vspace="4" alt="Spsettingsss" /></a></p>
<p><br>
<a href="http://dev.sinusoid.com/files/siggenss.png" onclick="window.open('http://dev.sinusoid.com/files/siggenss.png','popup','width=480,height=300,scrollbars=no,resizable=yes,toolbar=no,directories=no,location=no,menubar=no,status=yes,left=0,top=0');return false"><img src="http://dev.sinusoid.com/files/siggenss-tm.jpg" height="200" width="320" border="1" hspace="4" vspace="4" alt="Siggenss" /></a></p>
<p><a href="http://dev.sinusoid.com/files/scopesssine.png" onclick="window.open('http://dev.sinusoid.com/files/scopesssine.png','popup','width=480,height=300,scrollbars=no,resizable=yes,toolbar=no,directories=no,location=no,menubar=no,status=yes,left=0,top=0');return false"><img src="http://dev.sinusoid.com/files/scopesssine-tm.jpg" height="200" width="320" border="1" hspace="4" vspace="4" alt="Scopesssine" /></a><br />
<p></p>
<p>A Press release is available here:<br />
<a href="http://dev.sinusoid.com/files/AudioKit_Press_Release1.3.pdf" onclick="window.open('http://dev.sinusoid.com/files/AudioKit_Press_Release1.3.pdf','popup','width=612,height=792,scrollbars=no,resizable=yes,toolbar=no,directories=no,location=no,menubar=no,status=yes,left=0,top=0');return false"><img src="http://dev.sinusoid.com/files/AudioKit_Press_Release1.3-tm.jpg" height="148" width="115" border="1" hspace="4" vspace="4" alt="Audiokit Press Release1.3" /></a></p>
<p>
<p>See the <a href="http://store.sinusoid.com/software/iphone-apps/audio-kit.html">Sinusoid web site</a> for more information or this direct link to<br />
<a href="http://store.sinusoid.com/iTunes_AudioKit.html">iTunes App store.</a> <br />
<a href="http://store.sinusoid.com/iTunes_AudioKit.html"><img src="http://dev.sinusoid.com/files/AKIcon-tm.jpg" /></a></p>
</p><hr /><p><small>Original article writen by marklvit and published on <a href='http://dev.sinusoid.com'>Sinudev - Technical Notes</a> | <a href='http://dev.sinusoid.com/2010/09/16/iphone-audio-kit-update-1-3'>direct link to this article</a> | If you are reading this article elsewhere than <a href='http://dev.sinusoid.com'>Sinudev - Technical Notes</a>, it has been illegally reproduced and without proper authorization.</small></p>
urn:uuid:48f214fd-99bf-4b73-8502-7c6b6fd3ff2c
2010-06-18T15:34:01Z
2012-08-12T00:18:16Z
marklvit
Audio Kit - New iPhone App from Sinusoid
<p><h4>Sinusoid releases its new Audio testing iPhone App – Audio Kit</h4>
</p>
<p><a href="http://dev.sinusoid.com/files/spectfilllog.jpg"><img src="http://dev.sinusoid.com/files/spectfilllog-tm.jpg" height="200" width="320" border="1" hspace="4" vspace="4" alt="FFT Spectrum Audio Kit" title="FFT Spectrum Audio Kit" style="float:right;margin:0 0 0 10px;"/></a><br />
The Audio Kit iPhone App is a collection of four applications which are essential for those working in<br />
audio and sound. A real time <strong>Spectrum Analyser</strong>, a <strong>Scope</strong> to display waveforms, an <strong><span class="caps">SPL</span></strong> (sound pressure level)<strong> Meter</strong>, and a sine wave <strong>Signal Generator</strong>.</p>
<ul>
<li> View a real time spectrum of audio with the Spectrum Analyser</li>
<li> View the actual waveform of the audio signal with the Scope</li>
<li> An <span class="caps">SPL</span> Meter provides measurement of sound levels using an A-weighting</li>
<li> The Signal Generator provides a sine wave output up to 20,000Hz in 1 Hz steps</li>
</ul>
<p>
<p><span class="caps">FFT</span> (Fast Fourier Transform) is used to calculate the frequencies in the Spectrum Analyser and these are displayed in real time. The frequency is displayed in either logarithmic or linear scale.</p>
<p></p><p><a href="http://dev.sinusoid.com/files/scopemusic.jpg"><img src="http://dev.sinusoid.com/files/scopemusic-tm.jpg" height="200" width="320" border="1" hspace="4" vspace="4" alt="Scope with music" title="Scope with music" style="float:left;margin:0 10px 0 0;" /></a><br />
<p></p>
</p>
<p>The display of the Scope can be adjusted easily using pinch gestures in both horizontal and vertical directions.</p><br />
<p> Zero crossing detection of the waveform provides a smooth display and can be set to either positive or negative direction zero crossing.</p>
</p>
<p>There is a screen capture facility in both the Spectrum Analyser and the Scope allowing you to save the spectra and waveforms for future reference.</p>
</p>
<p>
<p><a href="http://dev.sinusoid.com/files/SPL.jpg"><img src="http://dev.sinusoid.com/files/SPL-tm.jpg" height="200" width="320" border="1" hspace="4" vspace="4" alt="SPL Sound pressure meter" title="SPL Sound pressure meter" style="float:right;margin:10px0 10px 0 10px;" /></a><br />
<br>
<span class="caps">SPL</span> Meter continuously displays the sound pressure level, and has minimum and maximum displays also.</p>
</p>
<p><br>
<p><br />
<a href="http://dev.sinusoid.com/files/siggen.jpg"><img src="http://dev.sinusoid.com/files/siggen-tm.jpg" height="200" width="320" border="1" hspace="4" vspace="4" alt="Signal Generator" title="Signal Generator" style="float:left;margin:15px 10px 5px 10px;" /></a></p>
<p>The output of the Signal Generator can be viewed on the other parts of the App.<br />
Frequency is selected using picker wheels and allows for accurate control of frequency to within 1Hz. Volume is continuously adjustable, and there is a switch to quickly turn off volume and quickly reset it to the previously set volume.</p>
</p>
<p>
<p>All parts of the App have direct access to a help document.</p>
</p>
<p>
<p>See the <a href="http://store.sinusoid.com/catalog/software/iphone-apps/audio-kit.html">Sinusoid web site</a> for more information or this direct link to<br />
<a href="http://itunes.apple.com/au/app/audio-kit/id376965050?mt=8">iTunes App store.</a> <br />
<a href="http://itunes.apple.com/au/app/audio-kit/id376965050?mt=8"><img src="http://dev.sinusoid.com/files/AKIcon-tm.jpg"/></a></p>
</p><hr /><p><small>Original article writen by marklvit and published on <a href='http://dev.sinusoid.com'>Sinudev - Technical Notes</a> | <a href='http://dev.sinusoid.com/2010/06/18/audio-kit-new-iphone-app-from-sinusoid'>direct link to this article</a> | If you are reading this article elsewhere than <a href='http://dev.sinusoid.com'>Sinudev - Technical Notes</a>, it has been illegally reproduced and without proper authorization.</small></p>
urn:uuid:7f31d54a-2d02-4e25-aa9e-92e86dac7b23
2009-11-02T21:54:24Z
2023-08-23T06:49:05Z
marklvit
Sinusoid rotary position encoders - RPE1, RPE2
<p>
<p><strong>Update: New all aluminium encoders have been release in July 2012.<br>See the <a href="http://store.sinusoid.com/">Sinusoid</a> site for details.</strong></p></p>
<p>
<p><a href="http://store.sinusoid.com/">Sinusoid Pty Ltd</a> has just released a range of rotary position encoders. These are based on contactless magnetic encoder chips from <a href="http://www.austriamicrosystems.com/">Austriamicrosystems</a>. <a href="http://dev.sinusoid.com/files/rpe1al8-rpe1al63-750.JPG" onclick="window.open('http://dev.sinusoid.com/files/rpe1al8-rpe1al63-750.JPG','popup','width=1000,height=750,scrollbars=no,resizable=yes,toolbar=no,directories=no,location=no,menubar=no,status=yes,left=0,top=0');return false"><img align="left" alt="Sinusoid rotary positional sensors RPE1, RPE2" border="1" height="180" hspace="4" src="http://dev.sinusoid.com/files/rpe1al8-rpe1al63-750.JPG" title="RPE1, RPE2" vspace="4" width="240" /></a></p><br />
<p><br />
Manufactured with a rugged Delrin body and built with dual ball bearings they offer full continuous rotation up to 6000rpm. There is a v-ring seal<br /></p>
<p>which provides IP50 ingress protection for speeds up to 3000rpm.</p><br />
<p><br />
This seal can be removed to allow continuous rotation up to 6000rpm.</p><br />
<p><br />
Two main models are available – RPE1 with absolute analog output, and RPE2 with a combination of incremental quadrature with index and absolute <span class="caps">PWM</span> output.</p><br />
<p><br />
The RPE1 has absolute analog output with a 10bit output voltage from 0-<span class="caps">VDD</span>, where <span class="caps">VDD</span> is the supply voltage – nominally 5V. The output increases linearly for a clockwise rotation.</p><br />
<p><br />
RPE2 provides:<br />
<ul><br />
<li>Incremental quadrature A/B with 256ppr and an index pulse signal</li><br />
<li>Absolute 10bit <span class="caps">PWM</span> with typical signal period of 1025µs and pulse widths varying from 1-1024µs</li></p>
</ul>
<p>
<p>Within these two main models, shafts are available in Delrin or aluminium, and in 6.35mm or 8mm diameter. Mounting is via 3 M2.5 screws suitable for a flange mount.</p><br />
<p><br />
Termination is a 280mm flying lead with colour coded conductors.</p><br />
<p><br />
Typical applications are robotics, digital potentiometer, angular position indicators, shaft speed measurement, front panel switches, wheel position sensors.</p><br />
<p><br />
All the Sinusoid encoders are RoHS compliant.</p><br />
<p><br />
Sinusoid Pty Ltd is based in Sydney, Australia.</p><br />
<p><br />
For more information go to: <a href="http://store.sinusoid.com/">http://store.sinusoid.com</a><br /></p>
<p></p><hr /><p><small>Original article writen by marklvit and published on <a href='http://dev.sinusoid.com'>Sinudev - Technical Notes</a> | <a href='http://dev.sinusoid.com/2009/11/02/sinusoid-rotary-position-encoders-rpe1-rpe2'>direct link to this article</a> | If you are reading this article elsewhere than <a href='http://dev.sinusoid.com'>Sinudev - Technical Notes</a>, it has been illegally reproduced and without proper authorization.</small></p>
urn:uuid:df11d156-9c41-419d-84a7-74fb76119bd1
2008-06-10T23:07:15Z
2012-05-05T03:50:49Z
marklvit
AVR fuse programmer for OS X
For anyone who works with AVR 8 bit microcontrollers, the programming software used is an important part of the development process. Atmel provides AVR Studio 4, which operates on the Windows operating system, but does not
provide an equivalent environment for other operating systems such as Linux, BSD or OS X.<p><br>
Fortunately there are several excellent open source tools available for these other operating systems such as the <a href="http://www.nongnu.org/avr-libc/user-manual/install_tools.html">GNU toolchain</a>, <a href="http://www.nongnu.org/uisp/">UISP</a>, <a href="http://savannah.nongnu.org/projects/avrdude/">AVRDUDE</a> etc.
<p>
One area that is lacking on AVRDUDE is the handling of fuses. While they can be programmed, and read back, this is a messy process and a mistake can render the processor useless for further serial In System Programming unless a parallel programmer is available. Also an adaptor may be required for the parallel programmer if it is a surface mount device, and the removal of the chip from the circuit. It is much better to get the fuses set correctly in the first place. <p>
AVR Studio does this by offering a GUI interface with check boxes for each item such as clock speed, type of oscillator, brown out detection, etc.
Now there is a useful tool for those who develop on Apple Macs that allows AVR fuses to be programmed in a GUI manner similar to the AVR Studio method - AVRFuses. <p>
<a href="http://www.vonnieda.org/software/avrfuses">AVRFuses</a> is written using the native OS X Cocoa interface. The look and behaviour of the fuses section of the program is just like same section in the AVR Studio application.
AVRFuses requires AVRDUDE to be installed to work properly as its backend, but this will usually be installed already on an OS X machine used for AVR development, or can be easily installed from Macports.
It also has a section similar to AVR Studio for reading and writing flash and EEPROM memory on the microcontroller, although this feature is probably less interesting than the fuse manipulation.
<p>
In the open source spirit, <a href="http://www.vonnieda.org/software/avrfuses">AVRFuses</a> is free of charge.<hr /><p><small>Original article writen by marklvit and published on <a href='http://dev.sinusoid.com'>Sinudev - Technical Notes</a> | <a href='http://dev.sinusoid.com/2008/06/10/avr-fuse-programmer-for-os-x'>direct link to this article</a> | If you are reading this article elsewhere than <a href='http://dev.sinusoid.com'>Sinudev - Technical Notes</a>, it has been illegally reproduced and without proper authorization.</small></p>
urn:uuid:688a8c14-a35b-4f2c-851b-6e6fc3a27ce5
2008-03-31T23:54:53Z
2012-05-05T03:50:49Z
marklvit
Low cost GPS module from InvenTek
<a href="http://www.inventeksys.com/">InvenTek</a> systems provides <a href="http://www.inventeksys.com/html/gps_modules.html">ISM300X</a> GPS modules based on SiRFstarIII™ chipset.
These low power and low cost modules are 20 channel GPS receivers in compact (18mmx18mm) SMD form.
<p>With a few external components, GPS capabilities can be added to electronic devices at low cost.
</p>
<p> <ul><li>New Enhanced Power saving modes</li>
<li>Improved Tracking capabilities</li>
<li>Low cost</li>
<li>18mm x 18mm</li>
<li>Integrated RF connector supports external active antenna</li>
<li>RF signal may also be routed to pin 1</li>
<li>Low Power</li>
<li>High Sensitivity</li>
<li>FCC /CE approved</li>
</ul>
</p>
<p>
Capable of 18,000m altitude, and 515m/sec maximum measurements, accuracy is to within 2.2m horizontal. Horizontal velocity accuracy is within 2.0m/s.
</p>
<p>
Output is in NMEA -0183 ASCII, baud rates of 4800, 9600 and 19200, with protocols including GGA, GSA, GSV, GGL.
</p>
<p>Typical applications are Hand-held Devices for Personal Positioning and Navigation
PDA, Pocket PC and other computing devices
Fleet Management / Asset Tracking
AVL and Location-Based Services.
</p><hr /><p><small>Original article writen by marklvit and published on <a href='http://dev.sinusoid.com'>Sinudev - Technical Notes</a> | <a href='http://dev.sinusoid.com/2008/03/31/low-cost-gps-module-from-inventek'>direct link to this article</a> | If you are reading this article elsewhere than <a href='http://dev.sinusoid.com'>Sinudev - Technical Notes</a>, it has been illegally reproduced and without proper authorization.</small></p>
urn:uuid:0ea618b0-2d05-4be7-bed6-3a87c34daab6
2008-03-01T00:00:30Z
2012-05-05T03:50:49Z
marklvit
Atmel CryptoRF
Atmel's CryptoRF devices use a ISO1443 based, 13.56Mhz radio system, a strong encryption to produce low cost embedded security devices to prevent theft, counterfeiting, and fake product reproduction.
<br><br>Benefits claimed by Atmel include:
<ul> <li>Offers hardware security, which is superior to any software solution
<li>Combines hardware security with key diversification, therefore delivering a superior security solution
<li>A hardware security solution makes attacks non-trivial
<li>Key diversification scheme limits any attack to only one unit
<li>Shorter application development cycle time
<li>Atmel is #1 in hardware security
</ul>
<p>The underlying radio system is based on ISO1443-B, and is royalty free. A range of up to 10cm is typical.
</p>
<p>For example, an AT88SC02040CRF can have a range of 8-10cm implemented as a smart card, 1-3cm implemented as a 17mm diameter RFID tag, and 10-15mm as a 10x20mm RFID tag.
</p>
Typical applications are:
<ul>
<li>Production Authentication
<li>Public Transportation
<li>Anti-Cloning
<li>Driving License
<li>Track and Trace
<li>E-Purse
<li>Energy Meters
<li>Health Cards
<li>Campus Cards
<li>Logistics Management
<li>Secure Access Control
<li>Anti-counterfeiting
<li>Identification
<li>Insurance Cards
</ul>
<p>
More information can be found on <a href="http://www.atmel.com/products/secureRF/default.asp">the Atmel website.</a><hr /><p><small>Original article writen by marklvit and published on <a href='http://dev.sinusoid.com'>Sinudev - Technical Notes</a> | <a href='http://dev.sinusoid.com/2008/03/01/february-2008-draft'>direct link to this article</a> | If you are reading this article elsewhere than <a href='http://dev.sinusoid.com'>Sinudev - Technical Notes</a>, it has been illegally reproduced and without proper authorization.</small></p>
urn:uuid:cbd17431-5fd5-4aaf-9f34-ce91c07562a7
2007-10-01T13:37:25Z
2012-05-05T03:50:49Z
marklvit
Atmel launches new industrial transceiver evalution kit
Atmel launches the ATAB542x <a href="http://www.atmel.com/dyn/corporate/view_detail.asp?FileName=ASK_FSK_ATA542x_9_19.html">Wireless Blackbird kit</a> for evaluation of the ATA542x transceiver series and demonstration of the transceiver's communication flexibility when paired with Atmel's ATmega3290 microcontroller.
<p>The Wireless BlackBird evaluation kit consists of two 2" x 3.5" PC boards, each with one ATA542x transceiver, custom LCD display, external antenna, ISP and UART headers, miniature joystick, and 2 AA batteries. Using the two transceiver boards, a communication link can be established within seconds to easily demonstrate functions such as RSSI links, temperature and light sensoring, and frequency hopping.
<p>A big advantage of this evaluation kit is that communication between transceivers can be established immediately without any other external devices such as PCs. This is achieved by means of the onboard LCD display and a joystick as user interfaces.
<p>Modulation is via FSK and ASK.
<p>Communications are possible in the 315 MHz, 345 MHz, 433 MHz, 868 MHz, and 915 MHz frequency bands.
<p>The evaluation kit is priced at $149 USD and is available from regular Atmel distributors.<hr /><p><small>Original article writen by marklvit and published on <a href='http://dev.sinusoid.com'>Sinudev - Technical Notes</a> | <a href='http://dev.sinusoid.com/2007/10/01/atmel-launches-new-industrial-transceiver-evalution-kit'>direct link to this article</a> | If you are reading this article elsewhere than <a href='http://dev.sinusoid.com'>Sinudev - Technical Notes</a>, it has been illegally reproduced and without proper authorization.</small></p>
urn:uuid:39bb314d-dab1-4c6a-ad23-b875eae7531f
2007-08-01T00:04:47Z
2012-05-05T03:50:50Z
marklvit
USB controlled DDS signal generator with ATmega88
<p>A simple signal generator which produces sine waves (or any waveform really) at audio frequencies using <span class="caps">DDS</span> and is controlled a <span class="caps">USB</span> serial connection.</p>
<p><a href="http://dev.sinusoid.com/files/IMG_6310.png" onclick="window.open('http://dev.sinusoid.com/files/IMG_6310.png','popup','width=1333,height=1000,scrollbars=no,resizable=yes,toolbar=no,directories=no,location=no,menubar=no,status=yes,left=0,top=0');return false"><img src="http://dev.sinusoid.com/files/IMG_6310-tm.png" height="150" width="180" border="1" align="left" hspace="4" vspace="4" alt="IMG_6310.JPG" title="IMG_6310.JPG" /></a><br />
Only 2 chips are used in this circuit. The <a href="http://www.atmel.com/" title="AVR"><span class="caps">AVR</span></a> ATmega88 which produces the signal, and</p>
an FT232R for the <span class="caps">USB</span> interface. While a computer is required to control the varying frequency of the oscillator, a fixed frequency project could be made without the <span class="caps">USB</span> interface. Likewise one could say that a sound card could be used to generate the signal, but this circuit could be useful if an independent signal is required, for instance when testing a piece of equipment and the sound card is needed as an input device.
<p>
<p>The waveform is produced using <span class="caps">DDS</span> (Direct Digital Synthesis). A decision is made as to the number of bits of resolution required for the waveform. For example, if 8 bits is selected, 256 separate points can be produced throughout 360 degrees of the waveform. For this application 6 bits was selected, giving up to 64 data points. In practice this gives a fairly good sine wave, with slightly noticeable digital noise on the waveform. This can be filtered somewhat using a capacitor of say 0.01uF across the ouput, at the expense of attenuation at higher frequencies.<br />
<p><br />
The <span class="caps">USB</span> interface uses the FT232R chip from <a href="http://www.ftdichip.com/Products/FT232R.htm">FTDIchip</a> which allows use of <span class="caps">UART</span> interface to the microcontroller with very few components. A FT245R chip could also be used giving a parallel interface to the microcontroller, but this involves a higher pin count on the board. These FT devices appear as a serial device on the <span class="caps">USB</span> port.<br />
<p><br />
A very basic GTK2 interface is provided, and was produced using glade-2 <span class="caps">GUI</span> builder. The output of this is used with the perl-Gtk2 module to produce a working program. A simple C or C++ program could similarly be used with the Glade2 file instead of the perl one. This interface worked well on OS X and Linux, perhaps a VB or other <span class="caps">GUI</span> would be more suitable for Windows. All that is needed is a control loop that can send an integer that corresponds to a value on a control widget.</p>
<p>
<p><a href="http://dev.sinusoid.com/files/GUI.png" onclick="window.open('http://dev.sinusoid.com/files/GUI.png','popup','width=203,height=348,scrollbars=no,resizable=yes,toolbar=no,directories=no,location=no,menubar=no,status=yes,left=0,top=0');return false"><img src="http://dev.sinusoid.com/files/GUI-tm.jpg" height="100" width="58" border="1" hspace="4" vspace="4" alt="GUI" title="GUI" /></a></p>
<p>
<p>A sine wave is given as the main example in the code, and a lookup table for a sawtooth wave is also provided. A square wave would simply require all bits on or all bits off, and is left to the reader to work out.<br />
<p><br />
The raw number is applied to <span class="caps">PORT</span> C, which outputs either a high or low bit on each leg of the resistor network. The output voltage is then produced as per the formula <br />
<p><br />
The delay between the change from one data point in the lookup table to the next determines the frequency.<br />
<p><br />
<strong><span style="text-decoration: underline;">Construction</span></strong><br />
<p><br />
A single sided board was used to make for simple construction. The board itself was made using techniques described in <a href="http://dev.sinusoid.com/articles/2006/06/30/printed-circuit-board-production-for-prototypes-toner-transfer-method"><span class="caps">PCB</span> toner transfer method</a> from the output of Eagle. Note that one single wire could not be routed as a track, and a wire needs to be added between pin 5 of the FT232R and pin 31 of the ATmega88.</p>
<p><br><br>
<a href="http://dev.sinusoid.com/files/dds_schem.png" onclick="window.open('http://dev.sinusoid.com/files/dds_schem.png','popup','width=1370,height=643,scrollbars=no,resizable=yes,toolbar=no,directories=no,location=no,menubar=no,status=yes,left=0,top=0');return false"><img src="http://dev.sinusoid.com/files/dds_schem-tm.jpg" height="100" width="213" border="1" hspace="4" vspace="4" alt="dds_schem" title="dds_schem" /></a></p>
<p><a href="http://dev.sinusoid.com/files/dds_board.png" onclick="window.open('http://dev.sinusoid.com/files/dds_board.png','popup','width=955,height=438,scrollbars=no,resizable=yes,toolbar=no,directories=no,location=no,menubar=no,status=yes,left=0,top=0');return false"><img src="http://dev.sinusoid.com/files/dds_board-tm.jpg" height="100" width="218" border="1" hspace="4" vspace="4" alt="dds_board" title="dds_board" /></a></p>
<p><br><p><br />
The ATMega88 fuses need to be programmed for an external full swing crystal, 20Mhz in this case.</p>
<p>
<p>This circuit was developed using Eagle and avrdude on OS X. Eagle files for the circuit will be provided shortly, as will the code for the ATmega88 and the GTK2 serial interface.</p>
<p>Here are the files for the code and glade files for the interface. Also in the <span class="caps">GUI</span> files is a perl script to use the Glade file to generate a GTK+ <span class="caps">GUI</span> and send the desired values via RS232c to the FT232RL device and microcontroller. They are more for a guide than something with complete instructions. Learning how they work will help you understand various aspects of the device.</p>
<p><a href="http://dev.sinusoid.com/files/controller_gui.tar.gz">controller_gui.tar.gz</a></p>
<p><a href="http://dev.sinusoid.com/files/sound.tar.gz">sound.tar.gz</a></p>
<hr><br>
Copyright © Mark Vitnell 2007<hr /><p><small>Original article writen by marklvit and published on <a href='http://dev.sinusoid.com'>Sinudev - Technical Notes</a> | <a href='http://dev.sinusoid.com/2007/07/31/usb-controlled-dds-signal-generator-with-atmega88'>direct link to this article</a> | If you are reading this article elsewhere than <a href='http://dev.sinusoid.com'>Sinudev - Technical Notes</a>, it has been illegally reproduced and without proper authorization.</small></p>
urn:uuid:99476ec3-1d6a-42dc-80a8-21c07e9803ed
2007-05-31T23:16:54Z
2012-05-05T03:50:50Z
marklvit
Dual port USB Host controller from FTDI / Vinculum
For applications which need a USB interface with host controller capabilities, FTDI via the Vinculum brand offer the <a href="http://www.vinculum.com/prd_vnc1l.html">Vinculum VNC1L-1A</a> device.
It has two USB 2.0 full speed (12 Mbps) ports and
has specific capabilities for mass storage devices such as transparent handling of FAT filesystems so that flash memory drives might be easily interfaced.
<p>It has 28 GPIO pins allowing interfacing with peripherals and microcontrollers in several interface modes including parallel FIFO interface, SPI and UART.
<p>FTDI's own firmware obviates the need for both USB programming knowledge and additional USB stack firmware licenses.
Various features of the chip can be selected by using different firmware models, freely downloadable from the Vinculum website. This firmware and other programming is achieved via UART through USB, RS232 or MCU chips.
<p>Published features & specifications include:<br><ul>
<li>8/32 bit V-MCU Core
<li> Dual DMA controllers for hardware acceleration
<li> 64k Embedded Flash Program Memory<br/>
<li> 4k internal Data SRAM<br/>
<li> 2 x USB 2.0 Slow/Full speed Host/Slave Ports<br/>
<li> UART, SPI and Parallel FIFO interfaces<br/>
<li> PS2 legacy Keyboard and Mouse Interfaces<br/>
<li> Up to 28 GPIO pins depending on configuration<br/>
<li> 3.3V operation with 5V safe inputs<br/>
<li> Low power operation (25mA running/2mA standby)<br/>
<li> FTDI firmware easily updated in the field<br/>
<li> LQFP-48 RoHS compliant package<br/>
<li> Multi-processor configuration capable</ul><p><hr /><p><small>Original article writen by marklvit and published on <a href='http://dev.sinusoid.com'>Sinudev - Technical Notes</a> | <a href='http://dev.sinusoid.com/2007/05/31/dual-port-usb-host-controller-from-ftdi-vinculum'>direct link to this article</a> | If you are reading this article elsewhere than <a href='http://dev.sinusoid.com'>Sinudev - Technical Notes</a>, it has been illegally reproduced and without proper authorization.</small></p>
urn:uuid:8ae79974-1448-46d7-88b6-13b39d277708
2007-04-30T23:46:35Z
2012-05-05T03:50:50Z
marklvit
Atmel's 32bit Microcontroller/Processor
Atmel have introduced 32-bit microcontroller/DSP chips. These have a MMU, which means they can run full operating systems such as Linux. As part of the introduction Atmel are offering a the <a href="http://www.atmel.com/dyn/products/tools_card.asp?tool_id=4102" title="ATNDW100">ATNGW100</a> Gateway kit, using a <a href="http://www.atmel.com/dyn/products/product_card.asp?part_id=3903" title="AT32AP7000">AT32AP7000</a> Processor for $69 (US).
These processors have many peripherals on board the chip, allowing self-contained devices with a lower total chip count.
<p>
The peripherals used on the ATNGW100 include a high-speed USB 2.0, 2 x Ethernet, RS232, JTAG and SD memory card slot. Also included is an expansion header allowing access to all of the otherwise unused peripheral pins.
<p>
Other useful items such as 2048x2048 TFT LCD connectors, 16 bit audio, and several other serial interfaces including lend the AT32AP7000 device to complete embedded applications.
<p>
Atmel offer the GNU AVR32 Toolchain for programming, and this is a welcome change for cross platform development.
<p>
Likewise the AVR Studio release to suit these 32bit Microcontrollers is cross platform, and based on Eclipse.<hr /><p><small>Original article writen by marklvit and published on <a href='http://dev.sinusoid.com'>Sinudev - Technical Notes</a> | <a href='http://dev.sinusoid.com/2007/04/30/atmels-32bit-microcontroller-processor'>direct link to this article</a> | If you are reading this article elsewhere than <a href='http://dev.sinusoid.com'>Sinudev - Technical Notes</a>, it has been illegally reproduced and without proper authorization.</small></p>
urn:uuid:2d4dd492-99aa-4bbc-a91b-4acafbc2fa54
2007-03-01T00:01:52Z
2012-05-05T03:50:49Z
marklvit
low cost target boards for eZ430-F2013 development tool
The <a href="http://dev.sinusoid.com/articles/2006/02/27/ez430-f2013-development-tool" title="eZ430-F2013 Development tool"> eZ430-F2013 Development Tool</a> was mentioned previously on this site. It allows development for MSP430F20XX microcontrollers at a low cost. <p> It is supplied with a single removable target MSP430F2013 microcontroller board as part of the USB key.<p> While this is great for development, it limits use for deployment.
Now TI are offering additional <a href="http://www.ti-estore.com/Merchant2/merchant.mvc?Screen=PROD&Product_Code=eZ430-T2012" title="eZ430 MSP430F2012 Target Board">eZ430 MSP430F2012 target boards</a> at a very low price. Like the original target board, the microcontroller is presented with terminals for each pin of the chip. <p>The main difference between the MSP430F2013 and the MSP430F2012 appears to be in the ADC, with the former having 16bit Sigma-Delta A/D conversions with differential inputs, and the latter having 8, 10 bit, 200-ksps ADC channels.
<p>
The price as of this date is USD $10 for 3 target boards.<hr /><p><small>Original article writen by marklvit and published on <a href='http://dev.sinusoid.com'>Sinudev - Technical Notes</a> | <a href='http://dev.sinusoid.com/2007/03/01/low-cost-target-boards-for-ez430-f2013-development-tool'>direct link to this article</a> | If you are reading this article elsewhere than <a href='http://dev.sinusoid.com'>Sinudev - Technical Notes</a>, it has been illegally reproduced and without proper authorization.</small></p>