This thesis describes the development of metal detector based on ATmega 324PA, microcontroller from AVR family. Microcontrollers from this family are user friendly and because of that, often used in embedded systems.
Presented detector works by successively energizing search coil and measuring resulting voltage. Energizing is done with square wave at a frequency of 9 kHz. This type of detector is named pulse induction detector. It has ability to set and change working parameters with LCD screen and four push buttons. It is possible to set sensitivity, number of samples, back light and audio information.
This thesis includes description of software and hardware operation of the detector. The history, types of detectors and their operation are also described.