Geeetech

Thanks I powered it up with both the 12VDC and then the USB and it did work. No smoke. I am converting a Printrbot simple metal that died from a static electric zap. Now it appears that the connectors are all similar but different enough not to just plug in. The schematic really helped even though p...

I have a brand new dual extruder board rev A+ and I power it up with 12 VDC and it turns on, or if I plug in the USB cable it turns on. My fear is if I power up both the 12 VDC connection at the same time as plugging in the USB wire will those two power connections fight each other and cause a burn ...