Title Short description
Antiradar RF Car radar detector circuit.
Crystal radio receiver v2 Radio receiver without power supply.
Darkness detector Darkness detector with photo resistor and NE555.
GSM sniffer Locate a GSM phone.
Heat detector using NE555 and diode Heat detector using NE555 and a diode.
Inductive Loop Vehicle Detector v2.1 Inductive Loop Detector/Sensor for detecting vehicles with PIC microcontroller.
Metal detector Another metal detector.
Metal detector/seeker Metal detector circuit.


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