I use a RAMPS 1.4 board that, I ordered from 3D Gadgets, to control the stepper motors. RAMPS is an Arduino based RepRap controller that you can flash with several different firmwares. My first try was Marlin which seems to work fine. Since I dont have any hotend and temperature sensor I had to make some firmware hacks to get the thing moving. But I did!
And some picture of how it looks right now.
The steppers are pretty small but I got them very cheap. Let’s hope the have enough power not to loose steps while printing. A worst case solution could be to crank up the current and put heatsinks on them, or just buy bigger ones.
RAMPS 1.4 have 5 Pololu stepper drivers to be able to control X, Y, Z, E0 & E1.I only use one extruder and the Z axis have two motors connected in paralell on one of the driver. Maybe I’ll change the firmware so I can use one driver for each motor instead, but I don’t think that is necessary right now since the load on the Z-axis is very low.
Right now I only have 3 endstops which is enough for the controller to find the home position (coordinate 0, 0, 0). It’s probably safer to have 6 endstops, one for each end of each axis, maybe I’ll add 3 more in the future.
I use Wade’s Geared Extruder I hope my small stepper motors are strong enough for this extruder.
I will start out with PLA plastic for my first prints, from what I’ve read I think ABS is more likely to warp because of uneven cooling. I think PLA will work great until I have my heatbed working.