This project is a simple IR-based sensor system that uses a reflective IR sensor setup and a 555 timer IC in monostable mode. When a person or object reflects the IR light back to the IR photodiode, ...

The circuit was designed to produce a universal infrared switch with a single channel and ON/OFF feature to operate in 36 kHz to 38 kHz in the form of a remote control. Infrared – a portion of the ...

Here’s your useful and beautiful circuit for the day — [New Pew]’s vibration sensor takes manual control of the flip-flop inside a 555 timer and lights an LED in response. Use it to detect those ...