This project it is based around a PIC16F627 micro and It is build as a countdown timer for a UV exposure box for PCB development that uses fluorescent UV lamp with following features:
Adjustable time in 15-second increments (up to 10 minutes)
Lamp preheat feature
Two button operation (with audible feedback)
Countdown alarm (when timer reaches zero)
Relay for [...]

This driver may be used for a 3 Axis CNC Machine. Based on the PIC16F870, for 3x Unipolar(5, 6 or 8 wire) Stepper Motors. It provides Full Stepping for good torque, with ability to toggle auto-shutdown of motor coils, which allows the motors and current regulation device to run cooler and require a lower output [...]

This development board is perfect for all the newbies that want to learn about AVR Microcontrollers or want to build some nice projects with it.
ATMEGA8 Development Board contains:

ISP programer
RS232 comunication (serial port)
High Power Voltage control
ON/OFF Circuit
All pins are marked
PC power jack

Source: Pop Gheorghe

How many times have you wished that you recorder your recent telephone conversation? I have, many many times. So thanks to [Trax] that he finally decided to make this happen by using PC and a piece of hardware (powered from USB) to record audio from phone line to MP3 format. He wanted this thing to [...]

The 78xx family is a very popular choice for many electronic circuits which require a regulated power supply, due to their ease of use and relative cheapness. When specifying individual ICs within this family, the xx is replaced with a two-digit number, which indicates the output voltage  the particular device is designed to provide (for [...]

Three small simple audio generator, producing a square wave, sine and triangular outputs on three separate waveform selectable via a small three-position switch or through a small mixer single output. These arrangements are based on the use of an ASIC, the ICL8038 (Intersil or Harris), also available under reference XR8038 (Exar). This circuit contains almost [...]

This is volt meter with ICL7107(Analogue to Digital Converter). It has been designed as a panel meter and can be used in DC power supplies or anywhere else it is necessary to have an accurate indication of the voltage present.

Source:macoprojects Schematic: Voltmeter with ICL7107

Generator can be operated from a PC through LPT port, or using any driver Saa1057 which the electrode is a whole lot.

Source: mkpl

Bartek present solder station based on the pattern EP 3 / 99.

Source: Bartek Download: Soldering station

The DPScope is controlled by the DPScope software running on the PC. The user interface gives you full access to all the features of the DPScope like horizontal and vertical resolution, trigger settings, acquisition settings (e.g. averaging, pre- and posttrigger range), and so on.

Source: womai Kit: dscope