Chris Gregg has created a fantastic printer using a retro classic mechanical typewriter which can be used as a printer thanks to the power of the Arduino platform and a bag full of solenoids which ...

[Paul] likes his piano, but he doesn’t know how to play it. The obvious answer: program an Arduino to do it. Some aluminum extrusion and solenoids later, and it was working. Well, perhaps not quite ...

The proportional-control solenoids used in some industrial hydraulic systems are usually driven by microcontrollers or programmable logic controllers (PLCs). Such complex drivers typically require ...