Thanks for the help. That was, in fact, the problem.by shelly68 - Firmware - mainstream and related support
I am quite new to all of this. I have loaded Marlin firmware onto my Arduino/Ramps. The characters X, Y, and Z on the main screen flash, alternating between a question mark and the letters X, Y and Z. What would cause that behavior? Thanks for any help.by shelly68 - Firmware - mainstream and related support