I’m curious what should be expected for the amount of heating that the stepping motors typically exhibit after a couple of hours of operation.
Using an inexpensive laser thermometer, I measured the surface temp of mine this morning. The results seem kind of intriguing, and I’m wondering if any of you folks think there might be an issue that I need to deal with.
First, please note that the two x motors and the two y motors are from Ryan’s store. However, the z motor is different because at the time of purchase Ryan only had 4 motors.
So, both of the motors on the y-axis were running about 40C. On the x-axis, the one at the far end (large y) was also about 40C. However, the one on the near end (small y) was at about 30C. The z-motor was about 30 C also.
At the time of measurement, the machine had been working for about 2 hours. Over several measurements over a few minutes, the temperatures were apparently stable.
And, finally, the measured difference between the x-motors was definitely real–it was obvious to the touch.
So, my questions are 1) are these temperature ranges satisfactory? and 2) what phenomena could be causing the 10C difference on the x-motors? (I’m not concerned about the z-motor–it’s operating completely in a different regime.)
As a side note, the 8825’s were calibrated during assembly to be at about 0.7 volts. And, there is a fan blowing on all three drivers. I’ve not checked those temps because they are inside a case.