DRV8834 stepper motor driver alternative?
I'm looking to power a tiny 8x9mm 2-phase 4-wire stepper motor in a system which is powered by a 3.7V LiPo. I have a max of 2 outputs from an ATtiny85 to drive it with, but I only need to spin the motor in one direction. I'd like to use something like an A4988 driver board where I can step the motor with only a single output from the microcontroller, but it requires a minimum of 8V on the motor side of things - I only have 3.7.
I found the Pololu DRV8834 board which looks like it will do what I want, but it's pretty hard to find, and 10x as expensive as the 4988. Are there any similar low-voltage stepper motor driver boards that are more common / less expensive?
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