Stepper motor moves when touched
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‎2024-05-10 2:09 AM - last edited on ‎2024-07-10 6:18 AM by Peter BENSCH
I'm currently controlling a closed loop stepper motor with an Arduino Uno R3 via the CL86 stepper motor driver. I also connected 2 buttons with pull-down resistors with which I can, for example, rotate the stepper motor by 90 degrees in one direction.
The control works so far, but the buttons also trigger when I touch their cables (e.g. the pull-down resistor) and also the stepper motor (metallic surface).
Why is that the case? Anyone have a tip?
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Motor Control Hardware
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‎2024-05-10 3:09 AM - edited ‎2024-05-10 3:12 AM
Missing ground /earth . So you should care for some ESD/antistatic area, but at least connect circuit ground to mains ground /earth .
And check your supply for correct insulation or let it check by someone, how knows about safety regulations and has the equipment to do a check.
Show a pic, what you have there, including supply.
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‎2024-06-07 10:43 PM
Make sure that you have connected uno gnd to the drive logical gnd . Try to reduce the button pull down resistor values.
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