Newbie with limited programing knowledge. I'm receiving the following error message "echo:Unknown command" with M226.
Marlin 2.1.1
Pronterface
Arduino Mega
Ramps 1.4
Project:
Syringe pumps actuated by stepper motors, which is activated by a digital signal loop.
Briefly, when I use Marlin's command M226 to activate the pumps/motors from Pronterface command line, the error message "echo:Unknown command: "M226" appears. I've been troubleshooting this problem for weeks without any resolution. I've changed out the board and updated the firmware multiple times.
Given my limited understanding of Marlin's framework, I'm hoping you have some suggestions on how to proceed with the issues that I'm still having the hardware not recognize specific Marlin codes. Has anyone else run into this problem? Is there a different Pin number I should call on the Arduino Mega/Ramps 1.4 configuration?
Thanks in advance for your help!
