I’ve purchased a mini-Rambo control board from Ryan a few years back for the original MPCNC but didn’t build it. I’m upgrading from LR2 to LR3 and flashed the firmware “V1CNC_MiniRambo” version 2.1.1/515 to the mini-Rambo board using platformio. Platformio showed it was a success.
After the board re-booted, the LCD display flips back and forth from screen1 to screen2 and back to screen1 in one second interval and “beeps” at 1 second interval continually.
Did you take the knob off as well? What makes the most sense to me is that Rambo board is sensing a button press from this display. To make that happen:
Something physically interfering
Bad encoder switch
Bent pin on one of the connections
If your Mini Rambo board uses a companion board for the display, check the pins and anything that might be shorting.
The original firmware flashed for the MPCNC worked fine, the encoder worked as it should. I used original firmware to move the X, Y2, Z, and E0 (really should be Y1) steppers with no issues. The beeping or clicking happen as soon as the new LR3 firmware was loaded.
Hummm. I know there was a problem with one version of the Mini Rambo firmware due to the laser pin being defined on one of the pins used for the display. Check to make sure this line in configuration_adv.h is commented out:
#define LASER_FEATURE
If not, you will need to comment it out, recompile and reflash.
I’m not sure, but I don’t think the Mini Rambo has an available PWM pin for a laser when a display is installed.
Thank you! I just installed the newest firmware on my MiniRambo and had the flashing screen and beeping also. How do we get the files on GIT corrected so this doesn’t happen to someone else?
I actually can not figure out why the laser is being enabled for the mini in the builder. We don’t have it set for the mini, but the output is clearly doing it.