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.

In Thailand, smoke pollution caused by slash-and-burn agriculture has become a serious social problem, but many people cannot afford to purchase an air quality sensor that costs more than tens of ...

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 ...

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 ...

A low-cost (~$100), do-it-yourself (DIY) ultrasonic water level sensor/datalogger has been designed, constructed, and tested for use in education, citizen/community science, and research settings. The ...

German engineer Gaurav Singh has designed and built an industrial USB box camera in a custom 3D-printed case that not only accepts interchangeable lenses, but the image sensor can also be swapped ...

DIY computer company Kano has released another brightly-coloured addition to its learn-to-code arsenal: a motion sensor kit. The standalone product comes with the Kano App to teach would-be coders ...

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.