So what’s the trick to running a whopping seventeen individual stepper motors directly from the digital pins of an Arduino Mega?

Barbie’s brain is an Arduino Uno, which also controls the stepper motor that moves her head.

I like this one - a super impressive Arduino-based barometer for measuring air pressure. There's something satisfying about the link with nature, a tangible connection with outside weather.

AMI Semiconductor, a manufacturer of integrated mixed-signal and structured digital products, has introduced two single-chip stepper motor controller ICs.