Metal Detector Kit


An LED indicates if metal object is in the vicinity



  • avoid disasters when drilling holes in walls
  • locate pipes, cables, metal studs, &
  • great project for novices
  • your own unique application
  • push button operation


  • metal detecting distance adjustable: up to 3.15″
  • power supply: 9V battery (not incl.)
  • LED indication
  • 12VDC-buzzer connection (buzzer not included)
  • dimensions: 2.2″ x 2.5″


  • Hints
    • If you experience difficulties with the calibration of the unit (ie if the LED doesn’t turn off, when there isn’t any metal present ), replace C1 with a ceramic 1.2nF (122) capacitor. This behaviour is due to a spread on the component values and differences created when winding the coils.
    • For those wanting an audible signal, space is provided on the print for connecting a buzzer type SV8. The small PCB has been specially designed to be incorporated into the separately available casing type G407.