Hi all,
I did a search on this on the forum but much seemed related to the heater. I just hooked up the LCD to the RAMBo Mini board I purchased from V1 and got this error. I do believe I have plugged in the connectors correctly to P1 & P2 with the number 1 pin aligned with the red wire on the ribbon.
Is this an LCD incompatibility or something simple I can fix?
The LCD is a RepRapDiscount Full Graphic Smart Controller by www.bigtree-tech.com.
Thx in advance,
Gary
Usually that’s a thermal issue. Did you try unplugging it and plugging back in?
What happens in repetier, and could you upload a few pics of the board plugged in.
It’s not the display.
You don’t get the printer halted error in repetier?
Did you change my firmware?
What gcode is triggering that, or is that on bootup? Have you tried my crown gcode?
My suggestion is either your are running gcode that is trying to turn on a heater or the firmware is funky, so either swap the firmware or gcode.
This is on boot up… no Repetier connected and no changes to your firmware… also no G-Code. Do my connections look correct per the pictures I sent?
From the RAMBo decription:
I can’t imagine it is the screen causing it. If you take the screen off does it still work fine with repetier?
Also can you unplug whatever you have plugged in besides the steppers. It looks like you have powered endstops plugged in. Please unplug those, for now, you can add them some other time but they make troubleshooting too difficult.
As for wiring I can’t really see anything on the mini from your pics.
yes… works fine in Repetier without the screen
Did you unplug those endstops?
The screen is passive, your firmware is always running the screen it does not know when it is or is not plugged in. There are two cable, one is power and LCD data, the other is SD data. After you unplug the endstops try physically swapping the two cables, maybe one has a short of some kind but I still do not see how it would trigger a heating error.
We are going to have to step through this. I have never seen anything like this.
BTW… are there docs on how to “swap” the G-Code or otherwise save whatever is currently on the board? DO I use Sketch to load new firmware? I prefer not to at this point but hey… whatever it takes.
Lets just go one step at a time.
Endstops first please.
If it works fine with the screen disconnected, I’m wondering if there “stop” button under the lcd is malfunctioning.
Do you own a soldering iron? Maybe de-solder the button…
Same results with all end stops removed. Looking at continuity of the stop button it appearsto be normally closed and interrupts when pressed.
Physically swap both LCD cables.
Same results with all end stops removed. Looking at continuity of the stop button it appearsto be normally closed and interrupts when pressed.
Hold down the stop button while resetting your board. Keep the button pressed and see if the killed message still pops up.
I’m using the cheaper lcd, while facing the machine I put the black lead from my multimeter on bottom left amd red on bottom right. I have continuity while the button is NOT pressed
I did physically swap the P1 & P2 leads. The display does not come on in that configuration.
On both ends? I am not sure if I am being clear. We are swapping the cables to see if one is bad not changing orientation or ports. just swap one with two on both ends. one carries SD data and one carries LCD info. By swapping them we are hopefully putting a bad cable in the SD port and the LCD will function.
If that is the case you have a bad ribbon cable.
