![]() ![]() But what the wiring should be? If it had 5 wires I would have done it like this schematics. Since I do not have a driver at hand, I need to convert the circuit so it works with 4 transistors instead. And this is exactly the source of confusion: On arduino website, the sample circuit's stepper has 4 wires and is directly connected to a driver IC (a LMxxx), and the driver is connected to Arduino. ![]() I use the MOSFETs as fast switches: 4 Arduino pins control 4 MOSFET transistors. But a 4-wire doesn't make sense! there must be 2 or 4 poles in a motor, and each pole needs a connection to common ground, so there must be 5 wires, how does a 4 wire work? I'm using MOSFET for driving the stepper, not LMxxxīecause I forgot to buy one, and I can't get my hands on one for a couple of days. All the pictures and circuits of easy tutorials I found on Google had 5 wires, (and those with 4 wires had different color coding anyway). Wires are colored: white, blue, red, yellow. The stepper motor driver that came with my arduino kit is connected with a 5 pin (jst-phr-5) plug and play connector. Is it okay if my stepper motor has exactly 4 wires? Hi all, I am using an arduino uno to control a peristaltic pump and stepper motor. Today I bought a stepper motor to play with, after 12 hours of struggling with it, I haven't been able to figure out how to connect it to an Arduino. ![]() The rotary encoder module has 5 pins: GND, + (+5V or 3.3V), SW (push button), DT (pin B) and CLK (pin A). The stepper motor used in this example is 28BYJ-48 (5V unipolar stepper motor) which usually comes with its driver board. Simulate this circuit – Schematic created using CircuitLab This Arduino project shows how to control unipolar stepper motor using Arduino UNO board and rotary encoder module. ![]()
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