The TMC2209 Stepper Motor Driver Module provides an analog voltage, data rate and delay information as a standard A1 interface to Arduino. It is similar to the voltage used in the Stepper Motor of Arduino. ![]() The output of the TMC2209 Stepper Motor Driver Module is an analog voltage. But what the wiring should be? If it had 5 wires I would have done it like this schematics. It also provides support for up to 3 power sockets. 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. I have included a wiring diagram, a tutorial on how to set the current limit, and many example codes. Is it okay if my stepper motor has exactly 4 wires? To make it easy for beginners, we recommend using one of the following shields: Arduino Motor Shield Rev3: this is an official shield from Arduino. This article includes everything you need to know about controlling a stepper motor with the DRV8825 stepper motor driver and Arduino. 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. Simulate this circuit – Schematic created using CircuitLab
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