Now armed with a full set of jumpers, I thought I’d try and re-create my motor-spinning test from a couple of weeks ago.
I carefully fitted all the jumpers to the shield (three jumpers per stepper motor for 1/16 stepping), then hooked up the power and started Pronterface.
Success! The motor is now spinning backwards and forwards. I’m now definitely all set to start assembling the printer over the weekend.