I have a problem with installing the correct firmware, I downloaded the correct firmware from the site, but it is not possible to upload them to the K8200 printer. The Arduino software always gives an error
Hy, stupid question but did you short cut the connector near the endstops plugs ?
Use Arduino 1.0.6 or lower.
Higher versions do not play nice with the K8200
1.) Connect Velleman power supply to the controller board.
2.) Connect USB from computer to controller board.
3.) Press reset on the controller board, then start the download within a few seconds.
It may be necessary to repeat step three a few times.
Use Arduino IDE version 1.0.6 or lower. Newer versions may appear to work, but the printer will not operate reliably.
Good luck!