TechKiwiGadgets explains more about the inspiration behind the Arduino DIY metal detector and the technology ... and once an object is located, the four sensors can be shown in a split-screen.

Evan Kale has ingeniously transformed a weed wacker into an Arduino-powered metal detector. This innovative project showcases the versatility and potential of Arduino in creating practical and fun ...

Using motion detectors ... in front of a PIR sensor it detects the change in background temperature and then triggers an output voltage. This voltage can be read by an Arduino digital input ...