I require your help regarding a problem I’m encountering.
I’ve made a controlcircuit on breadboard that allows geared-DC motors to act like steppermotors. The PCB footprint should be like a common ‘pololu-stepper driver’. (RAMPS-compatible)
It’s based on a dual H-bridge and ATtiny44, which runs the software I’ve written.
I’m looking for a PCB-design service. I think it requires at least 4 layers with components on both sides, which is more than my free PCB design SW allows.
The purpose of this is a ‘direct-drive’ extruder motor for delta-3D printers. The dc motor weights only 150grams and is much stronger than a NEMA17 stepper.
Does anyone know of such service? Any hint is welcome
Thank you so much in advance for your help!