Quote Originally Posted by GeorgeD View Post
Irving,that diagram doesn't show the enable +&- does that mean they are dismissed?

There's one wire there that I had in "ena-"
The Chargepump circuit on the DIYCNC board acts directly on its outputs so for a stepper circuit it makes no difference. The external enable would be used to power down a servo where there is external 'intelligence' driving the motor. The reason I'd leave it disconnected here is that the DIYCNC board outputs an 'Active Low' enable signal, but the drivers use active low to "enable the motor for manual operation", i.e. disable it!

If you suspect the problem is the chargepump not enabling the outputs, jumper J3 on the DIYCNC board - which is normally left off - can be fitted temporarily to override that and enable the outputs permanently...