Large Format Dowell to Duet conversion
-
@charles-fraser right. the error with thermocouple board is because i copied what was already in the config and looking back at the picture you have a newer TC board so it should be the following line
M308 S0 P"1.spi.cs0" Y"thermocouple-max31856"
I hope that fixes that issue.
For the hotend thermistor - even if the B value is wrong we should still get some sort of reading. (not -273). Looking back at old pics in this thread it looks like you have it plugged into Temp0, not Temp1 so either switch it to Temp1 on the board, or change the config to point to Temp0.
M308 S1 P"1.temp0" Y"thermistor" T100000 B3800 ; configure sensor 1 as thermistor on pin temp0Onto the next point:
Also the output of the heater for the heated bed goes to a relay. The polarity of the wires seems to matter but I can’t work out which of the pins on ‘OUT0’ on the 3HC is positive or negative. Sorry if this should be possible to determine from the wiring diagram, I still can’t work that out after looking at it
the pin labelled "out0" is the negative. The pin labelled V_FUSED is the fused VIN voltage (24V in your case).I could not find the data sheet for that model of relay exactly but found a similar image:
Which shows it can accept upto 32V as the control line so your 24V should be fine. Connect VFUSED to the +'ve side (terminal #3) and out0 to the -;ve side (terminal 4).
So the opposite way around from that you have.Regarding the current for your motors. if you look at the model numbers, find the data sheets, the look at the maximum current. then set it to 70% of that maximum for now.
-
@t3p3tony righto, thanks - I just have a team work session for an hour and a half then will get onto it.
Many thanks, Charles -
Thank you Tony!
- Okay so I changed the thermocouple & thermistor code as described. Sorry about that
After updating the board there is still n/a for the thermocouple and -298C for the thermistor on the nozzle. May I check these settings are both for the 3HC?
-
I swapped the wires in the bed heater around
-
Nema 17s I can't find a data sheet for. This gantry was put together in Shenzen and when I search the name and model number on the z motors (42byg4208-25 jingcheng motor 03303 20-10) or a variation thereof I get nothing of that name. I guess it is a Nema 17 because of the dimentions of the base plate but not sure what to do here other than maybe use some geneic value of a nema17 motor of the same size (40x40x67)
The Nema 23s (x & y axis motors) say 4.aA on the back so 2800mA is 70% of that. For reference below is the model number and here is the data sheet which specifies 5A rating, differing from what is printed on the back of the product.
-
@charles-fraser they are for board id1 which is how your 3hc is configured.
Please send the M98... to check config.g is loading correctly.
Please unplug the thermistor and check the resistance with a multimeter. Also check for a short between the thermistor wire and the hotend heater wire.
For the thermocouple i wonder if the issue you had before damaged the TC daughterboard.
Yes that nema17 model number does not appear to be turning up much. Do you have any idea what the current way configured on the previous controller? If not we will have to start low and work up.
-
@Charles-Fraser also please post your current config.g
-
Hi Tony
Now there is only one heater. After sending M98 I get
M98 Error: M98: missing parameter 'P' 07/10/2021, 15:41:29 m98 Error: M98: missing parameter 'P' 07/10/2021, 15:40:33 Error: M143: Heater 0 does not exist 07/10/2021, 15:40:32 Error: M307: Heater 0 not found 07/10/2021, 15:40:32 Error: M308: Unknown sensor type name "thermocouplemax3185"Here is the config file:
; Configuration file for Duet 3 (firmware version 3.3) ; executed by the firmware on start-up ; ; generated by RepRapFirmware Configuration Tool v3.3.3 on Fri Oct 01 2021 16:59:54 GMT+0100 (British Summer Time) ; General preferences G90 ; send absolute coordinates... M83 ; ...but relative extruder moves ; Wait a moment for the CAN expansion boards to start G4 S2 ; Drives M569 P0.0 S1 ; physical drive 0.0 goes forwards M569 P0.1 S1 ; physical drive 0.1 goes forwards M569 P0.2 S1 ; physical drive 0.2 goes forwards M569 P0.3 S1 ; physical drive 0.3 goes forwards M569 P0.4 S1 ; physical drive 0.4 goes forwards M569 P0.5 S1 ; physical drive 0.5 goes forwards M569 P1.0 S1 ; physical drive 1.0 goes forwards M584 X0.0 Y0.1 Z0.2:0.4:0.5:0.3 E1.0 M350 X16 Y16 Z16 E16 I1 ; configure microstepping with interpolation M92 X80.00 Y80.00 Z400.00 E420.00 ; set steps per mm M566 X900.00 Y900.00 Z60.00 E120.00 ; set maximum instantaneous speed changes (mm/min) M203 X6000.00 Y6000.00 Z180.00 E1200.00 ; set maximum speeds (mm/min) M201 X500.00 Y500.00 Z20.00 E250.00 ; set accelerations (mm/s^2) M906 X2800 Y2800 Z1200 E1200 I30 ; set motor currents (mA) and motor idle factor in per cent M84 S30 ; Set idle timeout ; Axis Limits M208 X0 Y0 Z0 S1 ; set axis minima M208 X1200 Y2000 Z1600 S0 ; set axis maxima ; Endstops M574 X1 S1 P"io0.in" ; configure active-high endstop for low end on X via pin io0.in M574 Y1 S1 P"io1.in" ; configure active-high endstop for low end on Y via pin io1.in M574 Z1 S2 ; configure Z-probe endstop for low end on Z ; Z-Probe M558 P9 C"^1.io1.in" H100 F120 T6000 ; set Z probe type to switch and the dive height + speeds G31 P500 X0 Y0 Z2.5 ; set Z probe trigger value, offset and trigger height M556 S50 X0 Y0 Z0 ; set orthogonal axis compensation parameters M557 X15:215 Y15:195 S20 ; define mesh grid ; Heaters M308 S0 P"1.spi.cs0" Y"thermocouple-max31856" ; create bed heater output on expansion board 1 out2 and map it to sensor 0 M307 H0 B1 S1.00 ; enable bang-bang mode for the bed heater and set PWM limit M140 H0 ; map heated bed to heater 0 M143 H0 S80 ; set temperature limit for heater 0 to 80C M308 S1 P"1.temp0" Y"thermistor" T100000 B3800 ; configure sensor 1 as thermistor on pin temp0 M950 H1 C"1.out1" T1 ; create nozzle heater output on out1 and map it to sensor 1 M307 H1 B0 S1.00 ; disable bang-bang mode for heater and set PWM limit M143 H1 S300 ; set temperature limit for heater 1 to 300C ; Fans M950 F0 C"out8" Q500 ; create fan 0 on pin out8 and set its frequency M106 P0 S0 H T45 ; set fan 0 value. Thermostatic control is turned on M950 F1 C"out9" Q500 ; create fan 1 on pin out9 and set its frequency M106 P1 S1 H-1 ; set fan 1 value. Thermostatic control is turned off ; Tools M563 P0 S"lily" D0 H1 F0:1 ; define tool 0 G10 P0 X100 Y100 Z0 ; set tool 0 axis offsets G10 P0 R0 S0 ; set initial tool 0 active and standby temperatures to 0C ; Custom settings are not defined -
Hi Tony, I get continuity when I detach the thermistor and test across it.
-
@charles-fraser sorry i was unclear.
@t3p3tony said in Large Format Dowell to Duet conversion:
M98... to check config.g is loading correctly.
by that I meant send:
M98 P"0:/sys/config.g"
-
@charles-fraser said in Large Format Dowell to Duet conversion:
Hi Tony, I get continuity when I detach the thermistor and test across it.
what is the resistance reading? also test between the thermistor ad the heater (with the heater not plugged into the external control)
-
@t3p3tony said in Large Format Dowell to Duet conversion:
M98 P"0:/sys/config.g"
M98 P"0:/sys/config.g" Error: M308: Unknown sensor type name "thermocouplemax3185" Error: M307: Heater 0 not found Error: M143: Heater 0 does not exist -
@t3p3tony Working on a diagram to illustrate the tests I am doing
-
@charles-fraser this is weird: "thermocouplemax3185" as you have
M308 S0 P"1.spi.cs0" Y"thermocouple-max31856"
I will see if I can reproduce this issue
-
@charles-fraser I can recreate this issue with the thermocouple on expansion boards not being set right so we will look inot that this end. In the mean time we can work on the rest of the config.
-
Hi Tony, welcome to “the other end of the machine”
I test for continuity with Ohms on my RadioShack Multimeter and get 140 accross two wires on thermistor disconnected and connected To points 11-12. The same reading when board is on or off. I had some readings accross the noz thermistor and noz heat cartridge terminals (testing accross points 11 and 13) when the heating cartridge was disconnected but when I connected the heat cartridge it stopped. Nothing at all. I think there is a damaged wire somewhere. I am testing and will let you know results.
Not sure what you mean about the thermocouple but I keep going as you instruct. My thanks
-
@charles-fraser ok for the thermocouple there is an issue with the name when used on an expansion board. For now please change the line in config.g to
M308 S0 P"1.spi.cs0" Y"thermocouplemax31856"Note I have removed the "-"
then run
M98 P"0:/sys/config.g"
and hopefully we will be back to no errors.
(and maybe even a reading for bed temperature)
I hope you find the source of the wiring issue. As a point of reference I would expect the thermistor to have a reading in the vicinity of 10K or 100K at room temperature (they come in many different types so it might be different).
-
Thanks Tony I will try that just now. I have just had a long chat with Juan the inventor of opensource Lily Pellet Extruder Website that I have hooked up here printing pellets from a 3mm nozzle and about 500-1000g / hour and costing only 500-1000$ for the extruder. Juan's manufacture partner in Spain has just said he can't fulfill the orders c. 20 orders Juan has for extruders because he is too busy with other stuff so Juan is stuffed and looking for a new manufacture partners. He has some amazing designs for a V2 extruder and a colour system that mixes RMCYB in a liquid master batch into the heated chamber to create colour prints or feed additives like fire resistant chemicals into the liquid masterbatch. Pellets reduce cost of printing 10 x and using a shredder you can shred old prints and certain household waste to create materials for the extruder. It's the whole idea behind the system. We will be at the Additt conference in Bilbao and wonder if you will be there and if you know anyone who might want to process the c. $20k worth of orders for the extruder that can be simply 3D printed for the high temp plastic parts and CNC milled for the auger and hopper? Orders that are on the table now. Perhaps this is something the opensource community here might want to discuss, but he's looking for partners to take the product forwards so I'm going to try and help him find what he needs thereby.
I'll send the results from the updated config just now. Thanks
Charles -
Oh no now the Pi won’t start up! It just goes black after the loading text scrolls past after startup!
-
@t3p3tony reflashed the SD and it is working again
-
Okay so I reflashed the SD and reconnected the pi, the screen worked now. I uploaded the old config and changed the config.g for a copy and paste of the last config.g I posted in here. Now it says:
M98 P"0:/sys/config.g" Error: M307: Heater 0 not found Error: M143: Heater 0 does not existIt also turns the fan on and off every second or so - it used to just wirr away very slowly but noisily. now it all seems abit crap.
Configuration file for Duet 3 (firmware version 3.3) ; executed by the firmware on start-up ; ; generated by RepRapFirmware Configuration Tool v3.3.3 on Fri Oct 01 2021 16:59:54 GMT+0100 (British Summer Time) ; General preferences G90 ; send absolute coordinates... M83 ; ...but relative extruder moves ; Wait a moment for the CAN expansion boards to start G4 S2 ; Drives M569 P0.0 S1 ; physical drive 0.0 goes forwards M569 P0.1 S1 ; physical drive 0.1 goes forwards M569 P0.2 S1 ; physical drive 0.2 goes forwards M569 P0.3 S1 ; physical drive 0.3 goes forwards M569 P0.4 S1 ; physical drive 0.4 goes forwards M569 P0.5 S1 ; physical drive 0.5 goes forwards M569 P1.0 S1 ; physical drive 1.0 goes forwards M584 X0.0 Y0.1 Z0.2:0.4:0.5:0.3 E1.0 M350 X16 Y16 Z16 E16 I1 ; configure microstepping with interpolation M92 X80.00 Y80.00 Z400.00 E420.00 ; set steps per mm M566 X900.00 Y900.00 Z60.00 E120.00 ; set maximum instantaneous speed changes (mm/min) M203 X6000.00 Y6000.00 Z180.00 E1200.00 ; set maximum speeds (mm/min) M201 X500.00 Y500.00 Z20.00 E250.00 ; set accelerations (mm/s^2) M906 X2800 Y2800 Z1200 E1200 I30 ; set motor currents (mA) and motor idle factor in per cent M84 S30 ; Set idle timeout ; Axis Limits M208 X0 Y0 Z0 S1 ; set axis minima M208 X1200 Y2000 Z1600 S0 ; set axis maxima ; Endstops M574 X1 S1 P"io0.in" ; configure active-high endstop for low end on X via pin io0.in M574 Y1 S1 P"io1.in" ; configure active-high endstop for low end on Y via pin io1.in M574 Z1 S2 ; configure Z-probe endstop for low end on Z ; Z-Probe M558 P9 C"^1.io1.in" H100 F120 T6000 ; set Z probe type to switch and the dive height + speeds G31 P500 X0 Y0 Z2.5 ; set Z probe trigger value, offset and trigger height M556 S50 X0 Y0 Z0 ; set orthogonal axis compensation parameters M557 X15:215 Y15:195 S20 ; define mesh grid ; Heaters M308 S0 P"1.spi.cs0" Y"thermocouplemax31856" M307 H0 B1 S1.00 ; enable bang-bang mode for the bed heater and set PWM limit M140 H0 ; map heated bed to heater 0 M143 H0 S80 ; set temperature limit for heater 0 to 80C M308 S1 P"1.temp0" Y"thermistor" T100000 B3800 ; configure sensor 1 as thermistor on pin temp0 M950 H1 C"1.out1" T1 ; create nozzle heater output on out1 and map it to sensor 1 M307 H1 B0 S1.00 ; disable bang-bang mode for heater and set PWM limit M143 H1 S300 ; set temperature limit for heater 1 to 300C ; Fans M950 F0 C"out8" Q500 ; create fan 0 on pin out8 and set its frequency M106 P0 S0 H T45 ; set fan 0 value. Thermostatic control is turned on M950 F1 C"out9" Q500 ; create fan 1 on pin out9 and set its frequency M106 P1 S1 H-1 ; set fan 1 value. Thermostatic control is turned off ; Tools M563 P0 S"lily" D0 H1 F0:1 ; define tool 0 G10 P0 X100 Y100 Z0 ; set tool 0 axis offsets G10 P0 R0 S0 ; set initial tool 0 active and standby temperatures to 0C ; Custom settings are not defined -
@t3p3tony not sure if you saw the latest above?
