Can anyone recommend an Arduino-compatible stepper motor controller that has at least seven unused IO pins?
I want to drive a rotary indicator and pair it with a 7-segment numeric display for maximum usability.
Tolerance for hostile environment (rough power, high temperatures, vibration) required.
Motor is very low power unit.
Small size preferred.
I’d suggest taking a look at the little A4990 motor driver: https://core-electronics.com.au/pololu-a4990-dual-motor-driver-shield-for-arduino.html
As for protecting it in harsh environments, I’d suggest looking into coating your electronics with Conformal coating and placing them inside a sealed enclosure. Vibration will kill pretty much everything eventually, so it’s worth soft mounting the electronics as well by using soft rubber mountings.
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