19 · Searching on a salt water beach will be easier if you are using a pulse induction metal detector,as well.A pulse induction detector can often see smaller pieces of gold than other types of ...

Demonstration of Motion Sensor Circuit. By following the 555 timer motion detector circuit diagram given above, I created the circuit on perf-board, the video of which is available at the end of the ...

Passive Buzzer (5V) IR Transmitter LED (3mm) Breadboard Infrared Photodiode (T&R 3mm) Resistors (100 ohm, 330 ohm, 10k, 1k, 4.7k) L7805 Voltage Regulator 9V Battery LED (Red, 5mm) Male-to-Male Jumper ...

The schematic diagram of the IR Motion sensor is shown below. The schematic itself is very simple and needs a handful of generic components to build. If you don't have a prebuilt module on hand but ...