Simple pinpoint metal detector that, although made only with standard electronic components, has quite satisfactory sensitivity, detecting a small coin at a distance of 4-5 cm, and a larger object at 7-8 cm and more.

A sensitive metal detector which is a great example of cooperation between a microcontroller and an Android smartphone.

These miniature metal detectors cannot boast of any great sensitivity, but it would still be good to make them for any enthusiast in this field, especially because of the opportunity to study in detail the way such devices work.

Metal detector handmade DIY