A new Instructables page has been created to make an eco-friendly DIY metal detector using an Arduino Mega just been ... and once an object is located, the four sensors can be shown in a split ...

The “snooper” here is an ordinary passive infrared (PIR) motion detector ... code is an Arduino project for the Digispark Attiny85 to turn on a light source when the PIR sensor detects something. Note ...

The digital signal output to be detected (usually marked as DO in the module) is applied to D2 input of the Arduino. Analog output (marked as AO) from the module is not used here. Sensor-head of the ...