Arduino’s brand-new Esplora microcontroller, packed with prebuilt sensors and features, could indicate a move for the DIY electronics company toward a wider segment of the microcontroller market.

Matt Richardson’s friend Lauren wanted a device to hold down the down arrow and physically scroll through Google Reader, like a sustain pedal on a piano. Matt built it for her using an old USB ...

An Arduino is a popular open-source single-board microcontroller. Learn how to program one and let the possibilities take shape.