The metal detector is built on an ATmega8 microcontroller , paired with an MCP3201 AD converter . Judging by the reviews on the Internet, this chip is a deficit for many, and it is recommended to start assembling the device after its acquisition the necessary componnets.
In order to collect this metal detectors , we need the following components:
ICs, Diodes, Transistors
- Linear Voltage Stabilizer 78l05 – 1 piece
- Quartz 11.0592 MHz – 1 pc
- Diodes 1N4148 – 10 pcs, 1N5819 – 1 pc, HER208 – 2 pieces
- Transistors 2SC945 – 5 pieces, IRF9640 – 2 pieces, A733 – 2 pieces
The circuit also has a voltage regulator ICL7660S (-5V). Please pay attention to the fact that in nature there are two chips, one with the letter “S” as I have, the other without it. The microcircuit with the letter “S” is operated with voltage up to 12v, the other works only with a voltage up to 10v.