Topics created by mmiscool

@mmiscool said in Permanently remove heated bed from printer and config.:

Thanks. As soon as I saw that line I commented it out. Testing now.

My firmware version is "2.02(RTOS) (2018-12-24b1)" with a duet 2 wifi

Your firmware is quite old.

You may want to consider updating - at least to 2.05.1.

The most recent firmware is 3.2.2 but updating to the v3 line takes a bit of work and there are changes that would need to be made to your config.g file.

Frederick

If you are using RRF3 than you can just reassign the motors in the M584 command and the endstop switches in the M574 command.

Alternatively, add or subtract 120 to each of the X, Y and Z parameters in the M665 command. if you don't have those parameters in your M665 command, set them all to +120 or all to -120.

@mmiscool said in Ability to use real serial as default interface rather than USB.:

that knocks out the USB interface from time to time.

I hunted USB problems between a Pi and a different controller board (Planet CNC) for weeks. Manifested as a USB disconnect that would occur every 5 to 20 hours when cutting. Everybody thought it was EMI. Near the end of the debugging, had just the Pi and the PCNC board in a cage. Still happened.

Tried all kinds of things. Including 3 different Pi 3B+ boards. Really, lots of hardware changes. Excellent support from the PCNC people; many suggestions.

Turned out the Pi 3B+ has known USB issues. Very hard to pin this fact down with Google searches... (hard to separate Pi versions, and a huge signal/noise ratio with many posts that blur the 3B+ issue). If you read very carefully it becomes apparent.

In my case, switched to a Pi4 and USB became completely stable. Tested for 30 and 40 hours at a time in the cage. Put the setup back in a CNC router that uses 70V Nema 23s. Perfect. Several 20 and 30 hour cuts. Many, many, shorter cuts since then.

I have read that perhaps Pi2 and Pi3B (not plus) are also USB stable but have no direct experience either way.

Summary: Pi3B+ will disconnect USB every few hours; Pi4 is USB stable.

So right now there is no way to use the displays serial pins in stead of the USB interface with normal response messages.

@mmiscool said in serial for LCD to just normal serial.:

Do you know if the serial pins that would normally come off of the USB to serial converter on a normal ramps board are exposed? Might be easier to try and find them.

The processor on the Duet has a true USB port, so there is no serial-to-USB converter.