Hello,
I have the same 3D printer as Ben, (the wooden panel one) and I've been trying to configure it to perform dual extrusion for some time now as it only came with one. However with everything hooked up on the second tool with the same heating rod, thermistor and stepper the entire unit shuts off barely into the first layer. I've tried many things but can't pinpoint the issue. I bought it rebranded from monoprice so supporting documentation is hard to find. Please help!