I tried looking for something with the exact thing I’m experiencing but couldn’t find exactly that, so here goes:
I’m currently wired in parallel. It was easier at the time and I can be impatient (god knows how I managed to print over 100 hours of parts :P). I’m now wondering if series would be better. I’ve been using Estlcam and it seems to always be running the steppers at the max current set on the drivers. Because of this, if I have it set at ~0.7, each driver gets pretty hot, even when just idling (and yes, they make the buzzing noise). I want to say I measured it at 150F max but it also quickly starts to smell like burnt electronics. I don’t know what the max temp is on these, and I’d rather not find out the hard way. I can sort of solve this by lowering the current to the drivers, also eliminating some buzzing, but I feel like this is costing me much needed power. Had too many crashes at reasonably low speeds while doing aluminum (and attempted carbon fiber) and I had solved this once by adding back more power.
So my thoughts are that if I’m currently using .75 on the drivers with parallel, I’m getting the same amount of motor power I’d be getting in series with the drivers set to .375? Maybe I’m just not getting the picture lol.