My Mini Kossel was working just fine.
Today, I decided to change the Z-probes' distance to nozzle by a 10th of a mm, so went straight ahead and did that before I connected to the printer.
It failed to upload (I only changed a number from 5 to six, did not swap a comma with a dot or vice versa).
I did a general troubleshooting, which told me the right Arduino board must be chosen. Hmmm, haven't had to to that before?? So I changed the Arduino board in tools --> board, and while I was at it, I realized I had to change to COM3 in port too.
Now it does upload, but it behaves really strange! Suddenly, in the midst of auto-levelling, it speeds up 3x or so, and starts to miss the print bed among other things.
I let it finish once, to see if maybe it would start printing normal after all, but no such thing; it goes up and down and does strange circles and stuff.
Does anyone know what I might have done?
Thanks,
Edward