Large Format Dowell to Duet conversion
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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.
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I've ordered the thermistors with very long leads.
Please NB I dont get any temp reading with the termistor plugged right into the board either
The bed still does not show up in the interface and no temp from the thermo couple either
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@charles-fraser ok I will have a few things to try once I am back at work.
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@t3p3tony please lets get the basics working this week. I have the new thermistors and will be on it tomorrow x
