Hi guys,

Thought I'd share a recent highly successful duet wifi conversion on the latest printer for our shop. It's a Creatbot D600 Pro with excellent hardware but terrible 8-bit electronics based on a Frankenstein closed source Marlin flavor. They will not share the source code and refuse to enable things like thermal runaway and print quality wasn't up to par among other things.

The duet has really made it feel like a premium industrial grade machine and quality/reliability is superb.

I designed a drop in base mount for the thingiverse paneldue mount to directly attach to which works nicely.

Tried moving the wire to a spare set in the bundle and still experiencing the same issue. If the 2nd thermistor is disconnected, there is no short triggered.

@dc42 Here is what I have

@dc42 I'd have to double check, but they were purchased within probably the last 6-9 months from Filastruder so I'd hope they were the newer ones. I believe my config is setup for the newer ones, but not seeing any capacitors on it. I'll upload a picture of what I've got a bit later today.

I did another test in which I swapped the problematic thermocouple to the other input on the daughterboard, and it does the same thing. I did the same test on the other known good cable (both inputs tested) and it seems to work fine. This must be some sort of short as indicated by the error message but I cannot locate it anywhere visible or with a multimeter. The wiring has solid continuity when tested with a multimeter. The cabling is a continuous flex Igus with 24 wires in it, twisted pair all the way down to DIN mounted breakout terminal. I tried replacing the cable to the problematic thermistor on the other side of the breakout terminal with new wiring, and moved completely away from the extruder wiring. Unless there's a break/cut internally in the flex cable somewhere that's making contact, I'm having trouble locating the cause.

I'm using a thermocouple board purchased from Filastruder:

https://www.filastruder.com/products/temperature-sensor-boards-for-duet?variant=31621167044

The thermocouple wiring for the first hotend runs down the same bundle and path as the secondary, and works 100% rock solid with no fluctuations. It is completely unaffected by movement of the primary or secondary extruder motor.

Hello,

I've been troubleshooting an issue in which the second extruder temp sensor on my machine reads completely fine, except when the opposite extruder motor engages (printing or just extruding filament). I have replaced all the wiring from the daughter-board to the thermistor, and even replaced the thermistor to ensure it's not shorting on the block or something like that. All insulation and wiring is clean and new.

When the extruder engages, the temp instantly reads 2000C and the duet complains about short to other wiring after the sensor read fault.

Any ideas what could be causing that?

@dc42 Firmware version is 2.02(RTOS) (2018-12-24b1) and confirmed once more just to be sure there is no resurrect.g created. It is created as expected when manually pausing a print.

@phaedrux The module is actually currently disconnected and not in use since I converted to duet.

@dc42 It does not automatically save no. I believe the capacitor bank is so large that it supplies a constant 24v until the bitter end and drops out too quickly. I would probably have to wire it directly to the board or utilize the 5v power to the board to make it work I'm assuming.

@dc42 Sorry for just getting back to this now. This is my configuration (just basic for now per the wiki):

M911 S21.0 R23.0 P"M913 X0 Y0 G91 M83 G1 Z3 E-5 F1000"

Is using an endstop a feature at this stage?