A designer who uses a phototransistor to convert a modulated optical signal to an electrical signal frequently encounters problems when high-intensity background light saturates the phototransistor.

Introduce your kids to Arduino and circuits with Elenco's Snap Circuits Snapino kit, but be prepared for a learning curve. Elenco's Snap Circuits line is the most affordable—and also one of the ...

A digital camera has an array of sensors that captures light reflected or transmitted onto it. This build is something closer to a reverse camera – a single sensor that makes images on a matrix of ...

The dark detection circuit is very simple that it was designed with only a phototransistor providing a control on a single LED which may be used for pumpkin lanterns. The dark detection circuit is ...

Olympia, WA, April 29, 2013– Olympia Circuits introduces the Arno Shield to expand their line of products for new Arduino users. The Arno Shield contains all the components necessary to learn Arduino ...

Arduino is the now-famous microcontroller that has set a portion of the maker community free to design amazing creations. The Arduino board and platform is fairly simple, but it can be intimidating to ...

Before opening the Arduino software, wire up the Arduino according to the circuits page using the 8MHz minimalist breadboard circuit but with a 10k pull-up resistor on the reset pin (physical pin 1).