The sensitivity of the proximity sensor circuit can be adjusted with P1 for the desired “distance”. One of its obvious uses is to open a door automatically. For this the sensor must be placed on the ...

A cadence sensor is a compact cycling device that measures pedaling rate in RPMs to provide real-time feedback.

Ultra simple circuit of the tilt sensor alarm presented here can be fabricated using readily available inexpensive components. The circuit is a true transistor based design. Home made Tilt sensor for ...

This idea describes an MCU interface for a 1-Wire temperature sensor interface that offers high accuracy while using less board space. The circuit can be modified for use with any 1-Wire device. The ...

Gesture-controlled gadgets were all the rage at CES back in January. I’m still not convinced it’s a good way to change TV channels, but it can’t hurt to learn how to program for a motion sensor.

No, you can’t buy Sony’s new 105MP, 100fps sensor, but you can still geek out over how such a feat is even possible ...

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 ...

To be honest, I didn’t know we could do this yet. Welcome to the future, Paul. SCiO is a miniaturized near-infrared spectrometer, which detects the molecular signature of things. It was Kickstarted a ...