With these mods, this circuit will last quite a long time, especially if you make things easier for the relay by turning off power to the motor before switching directions. It is simple and effective ...

I’m not a fan of educational toys. They’re usually either too educational or too toy-like and, in the end, kids get little education and little fun. The Code Kit from LittleBits has changed my mind.

I’ve always appreciated simulation tools. Sure, there’s no substitute for actually building a circuit but it sure is handy if you can fix a lot of easy problems before you start soldering and making ...