Hi, I have an older build of the Root 3. Completed in early 2018. I am using the Root CNC version of Marlin 1.1.6 using Ramps 1.4. I am wanting to add a laser option to this build. Is it possible? The JTech laser I was looking at uses the D9 pin on the Ramps board. When I check for voltage after issuing a M106 command, it shows a voltage of about 63 mv. It should be 12v. Has D8, D9 and D10 been disabled in the Marlin Root firmware? If so, how is it enabled?
Thanks for ant help,
Rob