Large Format Dowell to Duet conversion
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@t3p3tony said in Large Format Dowell to Duet conversion:
Connect to the duet over USB and run a terminal program like YAT and send M115 from that. It should be version 3.3. If its not the send M997 to up grade the firmware on the mainboard
Once the mainboard is reporting version 3.3 then send M115 B1 to find out what firmware is on the expansion board. It should also be 3.3 but may not be. Send M997 B1 to upgrade it to 3.3. Once both the main board and expansion board have 3.3 firmware on them (verify by using M115 and M115 B1) we can move to the next step.
for reference
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@t3p3tony said in Large Format Dowell to Duet conversion:
@charles-fraser for the bed thermocouple we made a change in 3.4b5 to deal with the name not working so upgrading to that should fix the issue.
If the thermistor is measuring 150-170k then that could be a 150k thermistor (unusual) or it could be 100k thermistor at 10-15 degrees C ambient. I would contact the manufacturer and ask for the specifications and if you can get them consider if you can swap it out with a known thermistor.
So next steps:
- Ensure that everything is in place for an upgrade to 3.4beta by getting the Duet2and3Firmware-3.3.zip from the 3.3 release page: https://github.com/Duet3D/RepRapFirmware/releases/tag/3.3 and installing that.
- upgrade to 3.4b5, to do that get the 3HC and 6HC binaries from the latest beta release here:
https://github.com/Duet3D/RepRapFirmware/releases/tag/3.4.0beta5
And upgrade, do the 3HC first, then the 6HC. - check the bed thermocouple is now not causing a fault by running M98 P"0:/sys/config.g"
Okay I Followed step one and I get
M115
FIRMWARE_NAME: RepRapFirmware for Duet 3 MB6HC FIRMWARE_VERSION: 3.3 ELECTRONICS: Duet 3 MB6HC v1.01 or later FIRMWARE_DATE: 2021-06-15 21:45:56M115 B1
Duet EXP3HC firmware version 3.3 (2021-06-15 16:12:41)Then I follow step 2 and I can install the 3HC first and then it asked me a yes no question, something about updating the main controller. I pressed no. Then I uploaded the 6HC new firmware and when it said do I want to update that I said yes and now it just gets stuck on the 'please wait while updates are being installed'.
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Now I cant connect to the boards with the DWC. This should be like updating an iphone. We are so far from there
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@t3p3tony can I reflash the 6HC with Bossa from the Pi?
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I followed these instructions to update the 6HC firmware from the Pi
Updating Duet 3 main board firmware
There are three ways of updating the main board firmware:If using an attached Raspberry Pi SBC, issue these commands on the RPi:
sudo apt update sudo apt upgradeIt ran through a lengthy process of updating, I still cant connect to the board in DWC!!!
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@charles-fraser to update to the unstable firmware branch you need to point the Pi at the unstable branch. Please do the following on the Pi:
wget -q https://pkg.duet3d.com/duet3d-unstable.list sudo mv duet3d-unstable.list /etc/apt/sources.list.d/duet3d-unstable.list sudo mv duet3d-unstable.list /etc/apt/sources.list.d/duet3d-unstable.list sudo rm /etc/apt/sources.list.d/duet3d.list sudo apt update sudo apt upgradeThat will get your Pi up to 3.4b5
After that process completes I expect DWC will be back up and you will have communication with the 6HC. Check the firmware version installed, especially on the 3HC, as you answered "no" to that update.
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Okay so we are back online and
Could you please recommend a thermistor that you know works and I will replace the noz and bed thermistor and thermocouple respectively.
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@charles-fraser it looks like the 3HC is not communicating with the Duet mainboard. probably as its firmware was not updated earlier in the process.
Try sending M115 B1 to confirm - I expect you will get an error.
To force a firmware reload set all the dip switched to 0, power cycle the 3HC, you should see the diag light flash a bit. when its showing steady flashing in sync with the mainboard, siwth the dip switch back to 1 as it was then power cycle the 3HC.
Try M115 B1 again. It should report some firmware.
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@t3p3tony Could you please recommend a thermistor that you know works and I will replace the noz and bed thermistor and thermocouple respectively.
At least then I can order it and it can arrive. Thanks
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@charles-fraser ok great. what does this command give as a reply:
M308 S0 P"1.spi.cs0" Y"thermocouplemax31856" -
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@charles-fraser if you then send M308 S0 then it should report the settings, so you can check that the thermocouple is configured.
Duet WiFi hardware designer and firmware engineer
Please do not ask me for Duet support via PM or email, use the forum
http://www.escher3d.com, https://miscsolutions.wordpress.com -
@dc42 thanks
m308 s0
Sensor 0 type Thermocouple (MAX31856) using pin 1.spi.cs0, reading 9.3, last error: sensor open circuit, thermocouple type K, reject 50Hz -
Couldn't we design an interface that displays alot of the info you need to keep typing commands for in an interface?
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Hi gents. So at the moment,
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thermocouple for bed does not work
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Heater for bed does not show up in interface
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Thermistor for noz shows -290C
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Now the fan is switching on for a half a second then off for a second. Not sure why we didn’t change the fan settings.
Please can you recommend a thermistor that you know works well with your boards to replace these with? Thank you
Charles
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Okay I would like to get this for the noz
And this for the bed
Please respond.
Many thanks
Charles -
The result from M308 indicates that the thermocouple for the bed is being read:
Sensor 0 type Thermocouple (MAX31856) using pin 1.spi.cs0, reading 9.3, last error: sensor open circuit, thermocouple type K, reject 50Hz
what is showing in DWC after you rerun config.g and are the heater error 0 errors no longer there.
@charles-fraser said in Large Format Dowell to Duet conversion:
Please can you recommend a thermistor that you know works well with your boards to replace these with? Thank you
Given that ou have a unknown (to us) extruder and bed it would be good to get something that works with the temperature ranges and mounting for those. Assuming the sensors you have linked are mechanically compatible then they should be good. The duet will be able to read them. For ease of wiring i suggest you get them on long enough leads that you dont have to use the (possibly questionable at this point) screw terminal distribution block you have in that system.
