Calibration

I've done some wiring and I've been trying to figure out how to mount the limitswitches. In the end I needed to use some mechanical switches since they were the only ones I could mount such that they actually work.

Once the printer is running I'll have to design and print some custom switch brackets.

Then it was homing and setting the origin. That required some updating of the firmware config. Some of my limitswitches were inverted by default, and my X-axis movement was also inverted.

I did my calibration according to Triffid Hunter's guide. That worked out well enough for the time being, I made some wrong assumptions in the beginning, so I'll have to double check the calibration.

The Z-axis gave met some trouble. With my M5x0.8 threaded rods for the Z-axis, a 200 steps-per-revolution stepper and 16x microstepping, I get to a steps_per_mm calibration value of 4000. Once I entered that (M92 Z4000) and I give any movement commands, the steppers make a lot of noise and no movement.
I believe they were trying to move very fast, but they did not have enough power. Giving the motors more current was my least favourite option, but after trying to adjust the max speed of the Z-axis I gave up and increased the current to the motors.

I stuck some kapton tape on the glass bed. Got it on nicely with the "no bubbles" method. Use soapy water on the glass and stick the kapton tape over it. Smooth it out with a scraper and the water and air go out together. Works like a charm. And I have tape that is as wide as my glass bed, so I only had to do it once.