He connected the Arduino Mega’s LED output to a pair of LittleBits which then switch a servo between two positions. A bare servo wouldn’t be much fun, so [Outaspaceman] connected a tentacle ...

[Lars] built a custom suspension system for his baby’s crib which allows a servo ... to make a custom amplifier circuit to get his microphone working with the Arduino. It seems to all work ...

Arduino is a programmable circuit board that makes it possible for the average developer to build custom hardware products.