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I have intermediate-level Arduino experience but it's been a few years... and, I would like to be more confident in a plan before ordering all the parts. So, basically, this is theoretical. The design cannot be simulated and I have yet to do the programming (again, still pinning down the parts/components list).

I drew up a quick wiring diagram in CirKit Designer. Can someone with experience using bluetooth modules help me determine if there are any egregious design errors and if this could potentially work to drive a Nema34 (12Nm, DMA860S driver).

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T. Paul
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The design looks fine. However, please keep one thing in mind. HC-05 modules are available in two versions. Some run at 5V and some run at 3.3V. Please check which version you have bought. If you have the 3.3V, you need a logic-level converter between the Arduino Nano and the HC-05.

If you want to control the servo motor via Bluetooth with an Android app, you can make some modifications to your project.

https://www.pcbway.com/project/shareproject/Stepper_motor_control_x_bluetooth_and_app_9f330c90.html

tepalia
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