The worst performer was an ultra-cheap LED bulb. Not bad for a simple DIY sensor and an existing mobile phone app intended for audio.

Instructables shows you how to make a home air quality sensor out of a giant balloon, an LED light, and some low tech accessories.

Note that, this steam sensor circuit offers two outputs; Digital (DO) and Analog (AO). If you only want a logic-low (L) level output when a threshold is reached, just use the Digital (DO) output. But ...

We watched the video (embedded after the break), took a sip of coffee, then almost sprayed the beverage all over the computer when we realized that this uses a diy sensor to synchronize the POV image.

We've shown you a couple of ways to fix your posture and why it's so important. But if those aren't working out for you, this posture sensor that detects when your posture slips and buzzes a ...

This DIY sensor has a matrix of 32 x 32 photo cells, just over 1,000 pixels. Sean Hodgins Hodgins recently created a working 1-kilopixel sensor and stuck it inside a 3D printed camera body. Although ...

If you're looking for ways to use less water, Instructables user tamberg developed a DIY water faucet sensor that shows you when you've used up a liter. Using an Arduino, flow sensor, and colored ...