Battery Discharger with Precision

The project uses a cheap and reliable discharger circuit with an easy visual indication of the battery’s state as it creates a precision battery discharger for 8.4V 7-cell NiCad or NiMH batteries.

DDS Board Built in Simple Design

The project features an AVR RISC microcontroller connected to a D/A converter in order to build a simple DDS-type board.

Frequency Counter with Wide Counting Range

The project was created to turn a multimeter into a sensitive frequency counter with a wide counting range.

Soldering Hotplate Controlled by PID

The project aims to control the temperature of a soldering hotplate by using a proportional integral controller (PID) while refrigerating the solder paste to maintain its shelf life.

PIC Based Analog Synthesizer Known as PICSynth

The project aims to provide the functionality of analog and early digital synthesizers from the 70s as it uses two oscillators and easy to get components to be able to produce a wide range of sounds.

Creation of PicoDopp DF

A Doppler DF sensor is used in this PicoDopp device which consists of 6 OEM PC boards that are tested and assembled but not assembled into a finished DF instrument.