Simple IR detection This easy-to-construct circuit causes a standard LED bulb to glow when infrared is detected by an infrared photo-diode or phototransistor.

And honestly, a cheaper hobby to get into. With small Arduino boards becoming more popular, Olympia Circuits is jumping into the mix with the Arno Shield.

The circuit is an Arduino RGB LED controller running on a sweet ‘n’ simple code,but with a little hardware surprise outside the Arduino board. You can add a bit of luxury to your aquarium or flower ...

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 ...