GenBoard/BuildProcedures/Stepper (2004-12-19 23:45:59)

This page is the checklist for GenBoard/VerThree with stepper driver chip


D45 options

The "D45 southern pad" (referred below) is at the board-edge, 70mm from the left side. This goes to the 12V supply pin of the stepper-driver chip.

EC36-pin25 (corner pin of EC36, closest to the PCB edge, and closest the EC18) is the 12V mains supply. The advantage of using this pin (below) instead of the "northern pad of D45" is that the stepper current is drawn directly from the EC36 supply pin, and not going through the small fuse. Therefore the small fuse can be really small (eg. 450mA) providing really effective protection.

Chose one of the 3 according to your taste: