I am trying to get one of these working. It uses a ULN 2003a chip. [image] This simple programme int Pin0 = 8; int Pin1 = 9; int Pin2 = 10; int Pin3 = 11; int _step = 0; boolean dir = false; void setup() { pinMode(Pin0, OUTPUT); pinMode(Pin1, OUTPUT); pinMode(Pin2, OUTPUT); pinM…

uln2003 board and stepper motor 28BYJ-48

LarryD November 13, 2017, 11:30pm 7

At 31Ω per coil, that would be to hard on a USB power supply.

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