GRBL Shield Issues

Other Hardware Motors, Mechanics, Power and CNC
1

I've been assigned a project at my college where I must get a Laser engraver that uses a GRBL shield and arduino uno working and following G&M code commands. however I am rather beginner when it comes to arduino and G&M and I never assembled this is the first place. Every time I send it any command or code it usually replies with "t�" in the serial monitor and
"
avrdude: ser_open(): can't open device "\.\COM3": Access is denied.

Failed uploading: uploading error: exit status 1
"
in the output. Are there any tutorials out there for reformatting and existing system? The professor says its run before but I cant find documentation on how they did that. I could really use some help on this please.

2

Often some other window or instance uses COM3.

3

This is true, turns out I needed to use the universal gcode sender software as that was what could actually communicate with the device.

4

Problem solved now?

5

mostly, new issues have shown up but I can control the system now which is good. I made another post about the current issue however.

6

This topic was automatically closed 180 days after the last reply. New replies are no longer allowed.