Amicus is a PIC microcontroller development system inspired by the popular Arduino board and it is using a PIC mcu instead of an ATMEL. The Amicus hardware is open meaning schematic and design files are free to download. Also Amicus software and IDE (integrated development environment) is free of charge. Check details on the link below.
Amicus: PIC microcontroller development system - [Link]
This project is a camera intervalometer based on ATmega 328 microcontroller. It has two potentiometers to set the time interval and exposure length and an optocoupler for isolating the camera from the rest of the circuit. You can find schematic and source code on the link below.
ATmega328 camera intervalometer - [Link]
In this series of articles learn about basic MSP430 microcontroller connections and programming options, Record audio with the MSP430, make a singing MSP430 microcontroller etc
Program a MSP430 microcontroller - [Link]
Record audio with the MSP430 microcontroller - [Link]
Make a talking MSP430 microcontroller – [Link]
Make a singing MSP430 microcontroller - [Link]
In this article learn different ways to burn firmware on a PIC microcontroller and how to make a JDM2 PIC programmer.
Program a PIC microcontroller - [Link]
This project will show you how to build a sound card for your PC using PCM2704 from Texas Instruments. Thanks to this IC in SSOP package is able to make a very small USB sound card.
Make a Sound Card with PCM2704 - [Link]
Following up the post: CMoy Headphone Amplifier there is a new design of PCB made by author Miroslav Batěk to be fit inside an Altoids box. Cmoy is a headphone amplifier and this new design incorporates moreover bass-boost circuit and constant current charger for 9V battery.
CMoy for Altoids box - [Link]
This is a simple and easy to build AVR programmer connected to serial port. It can be used with PonyProg or Avrdude software programmer. It is based on SI-Prog from the author of PonyProg software.
Simple Serial Programmer for AVR - [Link]
If you are going to use ATmega16/32 on your next project consider using this color sticker on top. This sticker made by Miroslav Batěk will help you identify each port I/O pins, SPI, I2C, UART, JTAG, ADC and do the correct wiring on the breadboard.
ATmega16/32 Pinout Sticker – [Link]
An intervalometer is used to take a photo at a preset interval. This design by Udi Tirosh may be the smallest DIY intervalometer ever made. It uses a micro PIC microcontroller and two other smd parts and is so small it fits inside a phone jack! Source code and desing files are available on the link below. [via]
SMD intervalometer – [Link]
The heart of this PWM controller is a PIC 12F675 microcontroller that reads the analog output of a LM35 and converts it to digital using the ADC (analog to digital converter). This value is converted to temperature and the fan speed is controlled proportionally to how hot the sensor is.
PWM Fan Controller - [Link]