Yes you could use the heater pins for the bltouch servo control, 5v, and ground connection. The trigger signal would still need to return to the mainboard.

Capture.PNG

Very nice! Only few centigrade off.

@T3P3Tony originally we wanted to have the temp daughterboards attached to the extruder as well as an Arduino Nano for reading out them. The very same Nano controls also the LED color based on the average temperature. For time being we have to transfer the temp to the Duet and then the RGB signal back to Nano.

Of course now we will have the option to adapt the temperature range of the LED color to the actual temperature set point, what makes this even better.

Anyway, thank you very much! Now, it should be pretty safe to say that first prints are to be expected next week. Of course we will post videos 🙂

what kind of printer is it?

@hackinistrator I also now found the issue with the Duet2. I've got a failed component on the Fan0 Mosfet Control. Component TR5 has failed. Well, actually more than that. It's got a "big" chunk missing.

Maybe I can repair the two boards.......

As they are heating the same thing and the heaters draw only 2A each, it would be best to connect both heaters in parallel to a single heater output.

The heater faults appear to have been resolved by switching back to known-good PT1000 sensors. I guess I will look into wtf is going on with these new RTDs.

Since the failure-to-pause issue is already a known issue, I'll mark this as resolved. Thanks

Sorry I didn't put these in before:

Running SBC mode.

config.g:

;CNC Mode M453 ;Name M550 P"tristan-painting-machine" ;Brake Pins M950 P2 C"out8" M950 P1 C"out7" ;Drivers Main Board M569 P0.0 S0 I1 M569 P0.1 S0 I1 M569 P0.2 S1 I1 M569 P0.3 S0 I1 M569 P0.4 S0 I1 ;Drivers Expansion Board M569 P1.0 S0 I1 M569 P1.2 S0 I1 ;Drivers Tool Board M569 P121.0 S1 I1 ;Driver Mapping M584 X0.3 Y0.1:0.2 Z0.0 U1.2 V1.0 A0.4 B121.0 P7 M584 C0.2 D0.5 P7 ;Current M906 X2000 Y3750 C3750 Z2000 A1750 B1500 U1000 V3500 I100 ;Microstepping M350 X16 Y16 C16 Z16 A16 B16 U16 V16 I1 ;Steps Per MM M92 X80 Y80 Z80 C80 A46.1062140618 B26.6666 U400 V8.888866 ;Instantaneous Speed Change M566 X500 Y500 Z500 C500 A500 U50 V500 ;Max Speeds M203 X13000 Y13000 Z13000 C6000 A40000 B40000 U5000 V8000 ;Max Acceleration M201 X750 Y750 Z500 C750 A2000 B2000 U300 V2000 ;Disable Idle Current Reduction M84 S0 M917 Y100 ;Probe M558 P9 C"!^121.io0.in" H200 F400 T2000 I1 ;Limits M208 X0 Y-1362 Z-145 A-72000 B-120 V-72000 U0 S1 M208 X1275 Y0 Z0 A72000 B230 V72000 U109 S0 ;Endstops Main M574 C1 S1 P"!io6.in" M574 Y1 S1 P"!io1.in" M574 X1 S1 P"!io8.in" M574 Z1 S1 P"io7.in" M574 A1 S1 P"io0.in" ;Endstops Expansion M574 V1 S1 P"1.io2.in" M574 U1 S1 P"1.io1.in" ;Endstops Tool M574 B1 S1 P"121.io2.in" ;PAINT MIXING ;Servos left M950 S4 C"124.pa06" ;Initialize 1st left servo. M950 S5 C"124.pa04" ;Initialize 2nd left servo. M950 S6 C"125.pa12" ;Initialize 3rd left servo. ;Servos right M950 S7 C"125.pa06" ;Initialize 1st right servo. M950 S8 C"124.pa12" ;Initialize 2nd right servo. M950 S9 C"125.pa04" ;Initialize 3rd right servo. ;Real Tools ;Tool 0 M563 P0 S"Inductive Sensor" ;Tool 1 M563 P1 S"Mixing Stick" ;Tool 2 M563 P3 S"5/8 Flat Brush" ;Tools used as number storage: M563 P10 S"cup_data" G10 P10 X-1 Y-1 Z-1 U-1 V1 A-1 B-1 M563 p11 S"cup1" G10 P11 X0 Y0 Z0 U0 V0 A0 B0 M563 p12 S"cup2" G10 P12 X0 Y0 Z0 U0 V0 A0 B0 M563 p13 S"cup3" G10 P13 X0 Y0 Z0 U0 V0 A0 B0 M563 p14 S"cup4" G10 P14 X0 Y0 Z0 U0 V0 A0 B0 ;Set movement queue length M595 P100 ;Recall Values M501 ;Allow Movement M564 S0 H0

M122:

=== Diagnostics === RepRapFirmware for Duet 3 MB6HC version 3.3beta1 running on Duet 3 MB6HC v0.6 or 1.0 (SBC mode) Board ID: 08DJM-956L2-G43S8-6J9D6-3S46R-KU2AD Used output buffers: 1 of 40 (18 max) === RTOS === Static ram: 148196 Dynamic ram: 62672 of which 0 recycled Never used RAM 123484, free system stack 200 words Tasks: Linux(ready,173) HEAT(delaying,357) CanReceiv(notifyWait,946) CanSender(notifyWait,373) CanClock(delaying,351) TMC(notifyWait,54) MAIN(running,1266) IDLE(ready,20) Owned mutexes: HTTP(MAIN) === Platform === Last reset 00:02:23 ago, cause: software Last software reset at 2021-02-19 01:02, reason: User, none spinning, available RAM 122676, slot 0 Software reset code 0x0012 HFSR 0x00000000 CFSR 0x00000000 ICSR 0x0044a000 BFAR 0x00000000 SP 0x00000000 Task Linu Freestk 0 n/a Error status: 0x00 Aux0 errors 0,0,0 Aux1 errors 0,0,0 MCU temperature: min 46.1, current 46.2, max 46.7 Supply voltage: min 24.1, current 24.1, max 24.2, under voltage events: 0, over voltage events: 0, power good: yes 12V rail voltage: min 12.1, current 12.1, max 12.1, under voltage events: 0 Driver 0: position 0, standstill, reads 19408, writes 14 timeouts 0, SG min/max 0/0 Driver 1: position 0, standstill, reads 19406, writes 16 timeouts 0, SG min/max 0/0 Driver 2: position 0, standstill, reads 19403, writes 19 timeouts 0, SG min/max 0/0 Driver 3: position 0, standstill, reads 19408, writes 14 timeouts 0, SG min/max 0/0 Driver 4: position 0, standstill, reads 19409, writes 14 timeouts 0, SG min/max 0/0 Driver 5: position 0, standstill, reads 19412, writes 11 timeouts 0, SG min/max 0/0 Date/time: 2021-02-19 01:05:14 Slowest loop: 0.44ms; fastest: 0.04ms === Storage === Free file entries: 10 SD card 0 not detected, interface speed: 37.5MBytes/sec SD card longest read time 0.0ms, write time 0.0ms, max retries 0 === Move === DMs created 125, maxWait 0ms, bed compensation in use: none, comp offset 0.000 === MainDDARing === Scheduled moves 0, completed moves 0, hiccups 0, stepErrors 0, LaErrors 0, Underruns [0, 0, 0], CDDA state -1 === AuxDDARing === Scheduled moves 0, completed moves 0, hiccups 0, stepErrors 0, LaErrors 0, Underruns [0, 0, 0], CDDA state -1 === Heat === Bed heaters = -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1, chamberHeaters = -1 -1 -1 -1 === GCodes === Segments left: 0 Movement lock held by null HTTP* is doing "M122" in state(s) 0 Telnet is idle in state(s) 0 File is idle in state(s) 0 USB is idle in state(s) 0 Aux is idle in state(s) 0 Trigger* is idle in state(s) 0 Queue is idle in state(s) 0 LCD is idle in state(s) 0 SBC is idle in state(s) 0 Daemon is idle in state(s) 0 Aux2 is idle in state(s) 0 Autopause is idle in state(s) 0 Code queue is empty. === CAN === Messages queued 738, send timeouts 0, received 22, lost 0, longest wait 1ms for reply type 6018, peak Tx sync delay 6, free buffers 49 (min 48) === SBC interface === State: 4, failed transfers: 0 Last transfer: 1ms ago RX/TX seq numbers: 5066/5066 SPI underruns 0, overruns 0 Number of disconnects: 0, IAP RAM available 0x2d410 Buffer RX/TX: 0/0-0 === Duet Control Server === Duet Control Server v3.2.2 Code buffer space: 4096 Configured SPI speed: 8000000 Hz Full transfers per second: 35.70 Maximum length of RX/TX data transfers: 4379/620

Rough wiring diagram of the components in question:

Please excuse the current messy setup, this is a prototype machine, not everything is polished yet.
Also let me know if the diagram is readable.

diagram_1.jpg

Photos:
Whole machine:
whole_machine.jpg

Servo location and box:
Contains buck converter and both SAMMYC21, servos are above the box.

servo box location.jpg
servo box close up.jpg

3HC and power supply:
3hc.jpg

Main control box:
main_box.jpg

@dc42 About turning off the servos I use the M280 Pn S0 to run the servos forward (S90 to stop S180 for reverse) using G4 S1 to G4 S30 as time intervals for fluid extrusion start/stop.

Would the G4 P200 method still work in this case?

I don't know too much about mediating electrical interference.
But it still seems strange that the servos would jitter when their power comes from a separate PSU as the steppers that are moving.
I hope this isn't too much to process, but would really like to get the servo issue figured out.
Cheers,
T

E3D had PT1000 sensors in stock again, https://e3d-online.com/products/pt1000-temperature-sensor.

Tool board heater auto tuning is available in firmware 3.3beta1 which was released last weekend.

@duetlover

Are you sure that's the correct thermistor for your bed? Also looking at my config.g set up via the online config tool it appears your missing a commands.

M308 S0 P"temp0" Y"thermistor" A"Keenovo Bed" T100000 B3950 ; configure sensor 0 as thermistor on pin temp0 M950 H0 C"out0" T0 ; create bed heater output on out0 and map it to sensor 0 M307 H0 B0 S1.00 ; disable bang-bang mode for the bed heater and set PWM limit M140 H0 ; map heated bed to heater 0 M143 H0 S120 ; set temperature limit for heater 0 to 120C

@DIY-O-Sphere I'm ahead of you, it was always running off an external psu, but thanks 🙂

@specktech
just make sure the extension wires have the biggest diameter you can crimp the connectors to. And also make sure they are braided or twisted.
For sensors I had good results with shielded CAT5 network cable.

@charchar159

this is the tool for the crimping
https://www.amazon.com/Engineer-PA-21-Universal-Crimping-Pliers/dp/B002L6HJ8W/

A PanelDue would normally be connected using the ribbon cable. However, if you want to use a 4-wire cable (for example because you need it to be longer than the ribbon cable is allowed to be), you can connect it to IO0 in the same way as on the Duet 3 MB6HC. see https://duet3d.dozuki.com/Wiki/Getting_Started_With_Duet_3#Section_Connecting_a_PanelDue.

@Veti Thank you for clarifying the warning. I have the V1.0 BLTouch, and it is currently setup for 5V.

@Exerqtor can i use tmc2208 for stepper driver modula a4988/drv8825 ?

@dc42 This is great news! However could the official documentation be changed to reflect that? Because right now, it explicitly states that out1 through out3 do not have flyback diodes built-in:

"2-pin JST VH OUT_1 thru OUT_3: these are intended for extruder heaters or fans. Maximum recommended current 6A each. If you connect inductive loads to these outputs, you must use external flyback diodes."
https://duet3d.dozuki.com/Wiki/Duet_3_Mainboard_6HC_Wiring_Diagram

We're here to help!

with 24v supply your max speed will be (without starting to loose torque)
revs_per_second = (2 * supply_voltage)/(steps_per_rev * pi * inductance * current)

= 48/(200 * 3.14 * 0.0159 * 6.3)= 0.76 rev per sec

your back EMF due to inductance at that sped is approx 22V

add to that rotational back EMF voltage and you quickly realize that supply voltage is not enough .

@Confessor said in Dead Duet3 Board?:

How would I go about hooking up the mosfets for the bed? Anyone already have a thread about it?

Have a look at this for an overview.
https://www.youtube.com/watch?v=uBOLE_hituk&ab_channel=DIY3DTECH.com

and here: https://3dprint.wiki/reprap/electronics/heatbed_mosfet

Also take a look at the anycubic documentation (I assume there must be some) since they include a mosfet on some of their printers.