I have been reading a ton of articles/watching videos on H Bridges. I see most of them are applied to a simple project DC motor. I have a NEMA-17 4 pin stepper motor. I got it out of a grab bag from a local electronics store and it doesn't have any markings on it other than degrees/step.
I am trying to build a controller for it (well, 3 axis, but only one motor for now). I've got four 2N4923 and four 2N4920 equivalent transistors and trying to use those to control the motor with an Arduino or Pi. Not having much luck. Any guidance would be great.
Buy a proper stepper motor driver board such as the Pololu A4988. Just make sure that the driver board can handle the current required by your motor.
Proper stepper motor driver boards have the ability to limit the current in the motor coils which means they can use a much higher voltage to give better high speed torque. They usually are simpler to control as well, just requiring step and direction connections to the Arduino.
My goal is to learn and design at the same time, hence me wanting to do it myself. I know it would be MUCH easier to buy a pre-built board, but there's little chance of me electrocuting myself while using one
SteveThing:
My goal is to learn and design at the same time, hence me wanting to do it myself. I know it would be MUCH easier to buy a pre-built board, but there's little chance of me electrocuting myself while using one
