I am using a TB6600 stepper motor driver but do not want the holding torque enabled all the time.
I currently have the ENA+ terminal connected to GPIO (Board) 33 (BCM 13)
I have successfully done this in my python code by connecting with:
I then set the output to high
This removes the holding torque and essentially disables the stepper. Exactly what I want!
When I need to run the stepper I just set
GPIO.output(33, GPIO.LOW) # Enable stepper, enables holding torque
along with the other relevant code to pulse it and set direction etc.
When the stepper has done its job I set it back to HIGH.
The problem I have is when I exit the script and use GPIO.cleanup()
It sets the output to LOW, which means when my script is not running the motor is in holding torque phase. I am not that comfortable with this as overtime it gets extremely hot and actually melted through my plastic work bench. I don’t really fancy burning down the house.
Is there a way to reverse what I want to do, by enabling the stepper with HIGH instead of LOW. This way after a GPIO.cleanup() it will at least leave it in the low state with no power being consumed by the stepper through the TB6600 stepper motor driver.