thanks you very much for reply. I'm now not yet finish my printer, this is good for knowleage . Frans@France , I check the popolu site, they guild to limit current by ref. voltage. so i think, using this method should not have problem with motor voltage. The stepper get too hot may be your current limit too high?by farseer86 - RAMPS Electronics
hi all, in my case, I have 2 stepper which run at 9 volt and 0.8amps. My stepper driver is A8825. i can connect 2 stepper in parallel and run on standard RAMPS at 12v. This will draw 1.6Amps. but I just want to know is it possible to connect them in series and run on 24V, 0.8amps if i modify ramps as follow. I check the wiring for stepper driver and find they have a pin for motor voltage. It is cby farseer86 - RAMPS Electronics