I already tried a test sketch before with all those power supplies and also while I was trying some different current limits:PSU1: 12V 5APSU2: 9V 2.5APSU3: 24V 10A
Is it clear enough or my English is too broken ? :/
@robin2 : I tried 1step per second, and it didn't even worked at all, the motor could still be moved by hand, no holding torque
Yes, the EN pin is held LOW, the RESET and SLEEP pins are held HIGH
There's just 1.3mA flowing when the voltage is around 1V at best (it fluctuates from 0 to 1V)
Try one of these:http://www.mpja.com/Stepmotor-Driver-3A-Max-TB6560/productinfo/31306+MSThey are good to have around for "testers" too. I've seen them at other stores for less than $10 but can't remember where, shop around.