Metal Detector Soldering Kit with Plastic Case DIY

Build your own metal detector to find studs, search for metal in the sand, detect electrical lines, etc.

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Last Updated: 02/23/2024




To come up against an electric cable while drilling a hole in a wall can have catastrophic consequences. Likewise, drilling into gas, water pipes or central heating pipes can be extremely hazardous. With a handy metal detector it can now be determined beforehand whether there are metal objects to be found in a wall, ceiling or floor. An LED indicates if a metal object is in the vicinity. If an audio signal is also desired, space has been provided on the PCB for a buzzer.


  • avoid disasters when drilling holes in walls
  • locate pipes, cables, metal studs, …
  • great project for novices
  • your own unique application
  • fun soldering kit you can put together yourself
  • clearly labelled circuit board with markings for where each piece goes


  • metal detecting distance: up to 1.96"
  • power supply: takes 2 AA batteries (batteries not incl.)
  • Buzzes when near metal
  • 5V Piezo buzzer included
  • Assembled Dimensions with Case: 5.24 x 2.72 x 0.94 inches (133 x 69 x 24mm)
  • PCB dimensions: 2.2" x 2.6"
  • PCB thickness: 1.6mm

Kit Contents

  • PCB board
  • Buzzer
  • 100UF 25V electrolytic capacitor
  • 2x 104 ceramic capacitors
  • 2x 222 polyester capacitors
  • 220K resistance 0.25W
  • 2.2K resistor 0.25W
  • blue potentiometer
  • 9018 transistor
  • 9015 transistor
  • 9012 transistor
  • 10cm long 22AWG wires
  • Plastic Case with Battery Compartment
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