Stepper motors are a mainstay in precision control systems, valued for their simple open-loop operation and high torque at ...

The new $49.99 Snapino kit (recommended for ages 12 and up) adds an Arduino UNO circuit board (a tiny but real computer) to the mix, giving Snap Circuits its first true programmability.

He further explains that, with the Arduino Uno, you can remove the reference capacitor from the circuit, and simply use the stray capacitance present in the board and microcontroller, which can be ...