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.
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.
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.
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.