4pi and Nema 17 (2 replies)

Hi,

I've just recieved my 4pi board to use on a personnal 3d printer.

And i've to make some tests, the first one, was to connect to board to my pc...make it recognized...programm it....After it done (not so easy), i've connected a nema17 stepper, a battery (12V) lunch the interface, connect it to the board...

Up to here, every thing is good, then I tried to move the stepper, it made some noise, vibration, and the driver became VERY hot in 1 ou 2 seconds.

I've changed the current limit (in the init_configuration.h file), then re-make it, re-programm the board, that is no longer detected, you have to put a wire between two pins...but nothing better happen.

If someone has any idea, or link (it's not easy to find some documentation )

Thx,