Pulsing print movements
Hey, I'm having what I can only assume is a firmware problem. I have a genuine MK3 and a MK2s that I've upgraded pretty much all the way to a MK3. It's using an einsy board and two power supplies, 24v for main power and 12v for the bed. Everything is wired and working, except that the printer is moving in a way that I can't explain. It's pulsing and moving much slower then expected on every layer after the first. The same gcode on my MK3 produces perfect prints, so I know that's not the problem. It seems like there's a buffer or speed setting I've overlooked, but two days of going through everything I can think of in firmware has resulted in no change. Here's a video clearly showing the problem, listen for the pulses
Any help would be super appreciated. I'm running the 2.4 modified version of the current 3.1.3 firmware, the only differences (that I know of) are the bed calibration settings and I changed the Z axis settings since I'm using different lead screws.
Re: Pulsing print movements
I did exactly the same upgrade on my Mk2S, with Einsy, dual PSU and the Mk2.5 heated bed and filament sensors etc.
One thought - how are you powering the Einsy? I considered putting 12v and 24v into it with the 12v on the bed side but in the end I gave both sets of inputs on the Einsy 24v and connected the 12v bed supply via an external mosfet.
My printer is working very well and I have not noticed anything like in your video. I am running the latest 3.2.0 RC1 firmware and have printed PLA and PETG without issues.
Re: Pulsing print movements
After another full day of troubleshooting I've determined it's just a board problem. I was running 12v through the heated bed connector and did notice a small speed upgrade when I switched both connectors to 24v, so there's some fishyness going on there. Although I got smoother prints, they still had pulses which inevitably ruins the finish.
I swapped the Einsy out for a spare and other then it not sensing the part cooling fan, everything's working great now. I'm going to email Ultimachine about this board and see if I can get a refund, it's clearly a dud.