September 20, 2011
about 3 years ago
A friend purchased the Big Easy several months back, and I just got around to hooking it up for him. Following the user manual wiring instructions (A+, A-, B+, B-, Pwr, Gnd, Step, Dir, Gnd) and using a simple Arduino stepper driver program, I am getting the BED LED to light, but no movement or noise are coming from the stepper motor. I adjusted the current-limit pot through it’s full range, to no avail. The voltage coming out of Vcc is 3.29 V, as it should be (I soldered the bridge for 3.3V logic).
I hooked the same stepper motor up to an Easy Driver that I have using the same configuration, and it worked perfectly. This rules out the stepper motor, Arduino, power supply and code as culprits. I don’t have any reason to suspect the breadboard, and I gave all my wiring a wiggle to ensure it wasn’t a poor connection. No luck.
Does anyone have any idea of what else it might be? Is it possible that the board was Dead on Arrival? Thanks for any and all help!
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