The device is a fully featured, jammed packed temperature readout unit used to measure temperature from up to 8 digital temperature sensors all on the same 1-wire bus.
The purpose of the project is to create a thermometer that can be plugged on any free serial port without using any programmable components such as microcontrollers.
The project shows how the FGM-3h sensor is made to create a high resolution flux gate magnetometer that is used to measure variations in the earth’s magnetic field.