I cannot see the existing pet feeder at the moment (problem my end). Stepper motors are going to draw power all the time even if they are not moving, if you could use servos instead that would help keep your power bill down.
Wouldn't i be able to use the Sleep pin on the A4988 driver to only energize when the motor needs to turn, or even the Enable pin to keep the board powered on but not outputting anything to the stepper. I do not need the motor to be actively held in place.
Wouldn't i be able to use the Sleep pin on the A4988 driver to only energize when the motor needs to turn,
Does the design prevent the pets from working the mechanism...
If you do that you can't guarantee that the stepper is in the same position
60 wsstts output from your psu should be enough imo
Robin2 if the auger gears are primed with pet food and the code states at a feeding time the stepper move 400 steps eat. The movement would move the food and re-prime the auger gear.
What is the best practice for power? Should I get one of those step down boards? Make one myself?