AVR circuits

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
Published on Tue, 10 Jun 2008 23:06

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.
Published on Sat, 01 Mar 2008 01:59

USB controlled DDS signal generator with ATmega88

A simple signal generator which produces sine waves (or any waveform really) at audio frequencies using DDS and is controlled a USB serial connection.

Only 2 chips are used in this circuit. The AVR ATmega88 which produces the signal, and

Published on Tue, 31 Jul 2007 21:56

Low cost USB interfaces for AVR microcontrollers

While there are many chips available for interfacing USB to microcontrollers, most of them involve some costs in both development and component count.

Two low cost alternatives to interfacing ATmega microcontrollers to USB are AVR-USB from Objective Development, and the range of USB interface chips from FTDI Chip.

(USB, FTDI, AVR-USB, FT245R, AVR, ATmega, ATtiny)

Published on Tue, 01 Aug 2006 22:03

USB based data acquisition module

Soon to be available, a small USB 1.0 based module with 8 channel analog inputs.

Interfacing to Windows, OS X, and Linux operating systems.

Expected price approximately $100 USD

(device ATmega88)

Published on Wed, 31 May 2006 22:52

Notes on converting AVR IAR style code to AVR-GCC style code

The previous entry Notes on AVR interrupt grew to larger than expected, so now this entry covers other problem areas and their possible solutions. This included compiling a complete new toolchain. (device ATtiny13)

Published on Sun, 22 Jan 2006 00:58