Show your talent by DIY a Sun Tracking Unit: ScienceProg

You grab a Motorola 68HC000 32 bit mcu, some knowledge, you mix them together and you should get a 32-bit power single board computer. The chip is quite old but there are many chip makers still produce it.

An amazing demonstration of the power of the slightly overclocked ATmega88 (video included in the article).

How to build a DIY USB joystick based on ATmega8.

A simple, inexpensive and versatile frequency counter with LCD display and some special extra features.

USBtiny is a software implementation of the USB low-speed protocol for the Atmel ATtiny microcontrollers.

AVR DDS signal generator V2.0 is a firmware based DDS signal generator which uses slightly modified Jesper’s DDS algorithm adapted to AVR-GCC C program as in-line ASM.

An easy-to-built sound card with TI's PCM2702 chip.

An infrared (IR) link that provides bi-directional communication between the NXT and the new Power-Functions system, which consists of a battery box, motors, a remote control (an IR transmitter) and an IR receiver that controls the motors.

Build your own laser display by two mirrors, two motors to move the mirrors, a laser pointer, and a PIC microcontroller with serial input.