Metal Detector with speaker and ttl output.
Features and uses :
- VCC 9v battery
- Logic high out put with common ground.
- Can detect any metal at the range of 1cm to 3cm. you can connect 9v battery to make it handy.
- Note: it will not detect coins if it is in the middle of the coil, it may detect if it is close to the coil.
INCLUSIONS
1 X METAL DETECTOR.
