Driving a brushless DC (gimbal) motor can be a pain in the transistors. [Ignas] has written up a nice article not only explaining how to do just this with an Arduino, but also explaining a little ...

With this free web app, you can build circuits from scratch using three popular Arduino boards — Uno, Nano, and Mega — and any of the 50+ hardware components, ranging from the basic mini ...

Because students are using it, it needs to be short-circuit-proof – no possibility that a mix-up in control signals can cause the drive to short out the rails (see DANGER, right). BTW, don’t use these ...

His test circuit uses six 2N2222 transistors to protect the Arduino from excessive current. You can see six red LEDs above which are inline with the base of teach transistor.

The trick, apparently, is to measure the internal dc resistance of the motor – ether with an ohm meter, or though applying a low voltage to the motor, stalling it, then measuring the current. Add a ...

The circuit in the figure provides three levels of speed control for a dc motor, using a PC’s parallel port (LPT1). A C++ program performs the control functions by allowing the signals from the ...