@CaLviNx seriously stop commenting. I do beta testing and bug fixing for a living. I took the steps I did for a reason. Everyone else has been trying to help while all you've been doing is throwing jabs in and out of this thread. I don't need you to tell me what the "smart approach" is because "the whole point of the exercise" is to figure out what happened and to see if I could fix it, not applying a band-aid.

@ratrig0331 It tells you what pin on the accelerometer plugs into what pin on the Duet 3 Mini.

@oliof in the end it was solved by reflashing the firmware with bossa. He was using a 10 foot cable. Told him to use a shorter USB cable and it worked.

@Phaedrux Actually I just tried it out and it worked without a hitch. Took probably 5 minutes

So it happened again. I swapped to a Raspberry Pi 4 with new firmware.

11/6/2020, 12:04:08 AM	Cancelled printing file 0:/gcodes/a1.gcode, print time was 0h 20m
11/6/2020, 12:04:08 AM	Warning: Controller has been reset
11/5/2020, 11:48:41 PM	Height map saved to file heightmap.csv
11/5/2020, 11:48:41 PM	16 points probed, min error -0.018, max error 0.070, mean 0.034, deviation 0.027
11/5/2020, 11:48:41 PM	Leadscrew adjustments made: -0.027 -0.025 -0.033, points used 3, (mean, deviation) before (-0.028, 0.003) after (-0.000, 0.000)
11/5/2020, 11:48:41 PM	Leadscrew adjustments made: -0.059 -0.023 -0.016, points used 3, (mean, deviation) before (-0.031, 0.014) after (0.000, 0.000)
11/5/2020, 11:48:41 PM	Leadscrew adjustments made: -0.022 -0.039 -0.054, points used 3, (mean, deviation) before (-0.039, 0.010) after (0.000, 0.000)
11/5/2020, 11:46:07 PM	Height map loaded from file heightmap.csv
11/5/2020, 11:44:01 PM	M32 "0:/gcodes/a1.gcode"
File 0:/gcodes/a1.gcode selected for printing

11/6/2020, 12:12:01 AM	M122
=== Diagnostics ===
RepRapFirmware for Duet 3 MB6HC version 3.1.1 running on Duet 3 MB6HC v1.01 or later (SBC mode)
Board ID: 08DJM-956L2-G43S8-6J9D0-3S46T-9U2LF
Used output buffers: 1 of 40 (13 max)
=== RTOS ===
Static ram: 154604
Dynamic ram: 163392 of which 64 recycled
Exception stack ram used: 544
Never used ram: 74612
Tasks: ETHERNET(blocked,824) NETWORK(ready,1960) HEAT(blocked,1188) CanReceiv(suspended,3820) CanSender(suspended,1420) CanClock(blocked,1436) TMC(blocked,60) MAIN(running,2672) IDLE(ready,76)
Owned mutexes:
=== Platform ===
Last reset 03:23:27 ago, cause: power up
Last software reset at 2020-11-05 20:48, reason: User, spinning module LinuxInterface, available RAM 74612 bytes (slot 3)
Software reset code 0x0010 HFSR 0x00000000 CFSR 0x00000000 ICSR 0x0444a000 BFAR 0x00000000 SP 0xffffffff Task MAIN
Error status: 0
MCU temperature: min 39.7, current 39.9, max 41.4
Supply voltage: min 24.3, current 24.6, max 24.7, under voltage events: 0, over voltage events: 0, power good: yes
12V rail voltage: min 12.1, current 12.1, max 12.2, under voltage events: 0
Driver 0: standstill, reads 17162, writes 4 timeouts 0, SG min/max 0/160
Driver 1: standstill, reads 17162, writes 4 timeouts 0, SG min/max 0/400
Driver 2: standstill, reads 17162, writes 4 timeouts 0, SG min/max 0/384
Driver 3: standstill, reads 17162, writes 4 timeouts 0, SG min/max 0/1023
Driver 4: standstill, reads 17162, writes 4 timeouts 0, SG min/max 0/1023
Driver 5: standstill, reads 17162, writes 4 timeouts 0, SG min/max 0/1019
Date/time: 2020-11-06 00:12:00
Slowest loop: 9.38ms; fastest: 0.21ms
=== 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 ===
Hiccups: 0(0), FreeDm: 375, MinFreeDm: 322, MaxWait: 302820ms
Bed compensation in use: mesh, comp offset 0.000
=== MainDDARing ===
Scheduled moves: 3599, completed moves: 3599, StepErrors: 0, LaErrors: 0, Underruns: 0, 0  CDDA state: -1
=== AuxDDARing ===
Scheduled moves: 0, completed moves: 0, StepErrors: 0, LaErrors: 0, Underruns: 0, 0  CDDA state: -1
=== Heat ===
Bed heaters = 0 -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 ready with "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.
=== Network ===
Slowest loop: 0.77ms; fastest: 0.03ms
Responder states: HTTP(0) HTTP(0) HTTP(0) HTTP(0) HTTP(0) HTTP(0) FTP(0) Telnet(0), 0 sessions Telnet(0), 0 sessions
HTTP sessions: 0 of 8
- Ethernet -
State: establishingLink
Error counts: 0 0 0 0 0
Socket states: 0 0 0 0 0 0 0 0
=== Filament sensors ===
Extruder 0 sensor: ok
=== CAN ===
Messages sent 7459, longest wait 0ms for type 0
=== Linux interface ===
State: 0, failed transfers: 8
Last transfer: 19ms ago
RX/TX seq numbers: 2795/56430
SPI underruns 13, overruns 11
Number of disconnects: 3
Buffer RX/TX: 0/0-0
=== Duet Control Server ===
Duet Control Server v3.1.1
Code buffer space: 4096
Configured SPI speed: 8000000 Hz
Full transfers per second: 32.12

DWS2.txt
DCS.txt

You should post this on the Facebook page as their's more users familiar with the BLV Cube and the creator of the sketch is on there as well.

@Phaedrux Thanks!

Do you know if this instructable would work?
How-to-Make-Raspberry-Pi-Webcam-Server-and-Stream

Disconnected panel due

11/6/2020, 5:23:22 PM	Connection established
11/6/2020, 5:21:46 PM	Connection interrupted, attempting to reconnect...
DCS has been stopped
11/6/2020, 5:21:16 PM	Cancelled printing file 0:/gcodes/a1.gcode, print time was 0h 19m
11/6/2020, 5:21:15 PM	Warning: Controller has been reset
11/6/2020, 5:06:52 PM	Height map saved to file heightmap.csv

11/6/2020, 5:23:59 PM	M122
=== Diagnostics ===
RepRapFirmware for Duet 3 MB6HC version 3.1.1 running on Duet 3 MB6HC v1.01 or later (SBC mode)
Board ID: 08DJM-956L2-G43S8-6J9D0-3S46T-9U2LF
Used output buffers: 1 of 40 (13 max)
=== RTOS ===
Static ram: 154604
Dynamic ram: 163392 of which 140 recycled
Exception stack ram used: 544
Never used ram: 74536
Tasks: ETHERNET(blocked,832) NETWORK(ready,1968) HEAT(blocked,1188) CanReceiv(suspended,3820) CanSender(suspended,1384) CanClock(blocked,1436) TMC(blocked,68) MAIN(running,2672) IDLE(ready,76)
Owned mutexes:
=== Platform ===
Last reset 03:50:47 ago, cause: power up
Last software reset at 2020-11-05 20:48, reason: User, spinning module LinuxInterface, available RAM 74612 bytes (slot 3)
Software reset code 0x0010 HFSR 0x00000000 CFSR 0x00000000 ICSR 0x0444a000 BFAR 0x00000000 SP 0xffffffff Task MAIN
Error status: 0
MCU temperature: min 39.5, current 39.8, max 40.3
Supply voltage: min 24.3, current 24.6, max 24.8, under voltage events: 0, over voltage events: 0, power good: yes
12V rail voltage: min 12.0, current 12.1, max 12.1, under voltage events: 0
Driver 0: standstill, reads 32788, writes 7 timeouts 0, SG min/max 0/1023
Driver 1: standstill, reads 32787, writes 8 timeouts 0, SG min/max 0/226
Driver 2: standstill, reads 32788, writes 7 timeouts 0, SG min/max 0/1023
Driver 3: standstill, reads 32788, writes 7 timeouts 0, SG min/max 0/179
Driver 4: standstill, reads 32788, writes 7 timeouts 0, SG min/max 0/175
Driver 5: standstill, reads 32788, writes 7 timeouts 0, SG min/max 0/127
Date/time: 2020-11-06 17:23:58
Slowest loop: 9.29ms; fastest: 0.21ms
=== 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 ===
Hiccups: 0(0), FreeDm: 375, MinFreeDm: 323, MaxWait: 541330ms
Bed compensation in use: mesh, comp offset 0.000
=== MainDDARing ===
Scheduled moves: 3364, completed moves: 3364, StepErrors: 0, LaErrors: 0, Underruns: 0, 0  CDDA state: -1
=== AuxDDARing ===
Scheduled moves: 0, completed moves: 0, StepErrors: 0, LaErrors: 0, Underruns: 0, 0  CDDA state: -1
=== Heat ===
Bed heaters = 0 -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 ready with "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.
=== Network ===
Slowest loop: 0.76ms; fastest: 0.03ms
Responder states: HTTP(0) HTTP(0) HTTP(0) HTTP(0) HTTP(0) HTTP(0) FTP(0) Telnet(0), 0 sessions Telnet(0), 0 sessions
HTTP sessions: 0 of 8
- Ethernet -
State: establishingLink
Error counts: 0 0 0 0 0
Socket states: 0 0 0 0 0 0 0 0
=== Filament sensors ===
Extruder 0 sensor: ok
=== CAN ===
Messages sent 5531, longest wait 0ms for type 0
=== Linux interface ===
State: 0, failed transfers: 22
Last transfer: 20ms ago
RX/TX seq numbers: 1766/48405
SPI underruns 38, overruns 14
Number of disconnects: 2
Buffer RX/TX: 0/0-0
=== Duet Control Server ===
Duet Control Server v3.1.1
Code buffer space: 4096
Configured SPI speed: 8000000 Hz
Full transfers per second: 32.03

11/6/2020, 5:24:21 PM	M98 P"config.g"
HTTP is enabled on port 80
FTP is disabled
TELNET is disabled
Warning: M307: Heater 0 appears to be over-powered. If left on at full power, its temperature is predicted to reach 351C

DWS3.txt
DCS3.txt

I connected the 2 ground wires together and it's been fine

I haven't loaded my config file but I flashed Duet3Firmware_MB6HC.bin through Bossa. It looks like it's communicating with the RPI again.

M122

m122
=== Diagnostics ===
RepRapFirmware for Duet 3 MB6HC version 3.1.1 running on Duet 3 MB6HC v1.01 or later (SBC mode)
Board ID: 08DJM-956L2-G43S8-6J9D0-3S46T-9U2LF
Used output buffers: 1 of 40 (10 max)
=== RTOS ===
Static ram: 154604
Dynamic ram: 161360 of which 20 recycled
Exception stack ram used: 236
Never used ram: 76996
Tasks: NETWORK(ready,1980) HEAT(blocked,1452) CanReceiv(suspended,3820) CanSender(suspended,1488) CanClock(blocked,1436) TMC(suspended,252) MAIN(running,5184) IDLE(ready,76)
Owned mutexes:
=== Platform ===
Last reset 00:09:59 ago, cause: power up
Last software reset at 2020-11-05 20:48, reason: User, spinning module LinuxInterface, available RAM 74612 bytes (slot 3)
Software reset code 0x0010 HFSR 0x00000000 CFSR 0x00000000 ICSR 0x0444a000 BFAR 0x00000000 SP 0xffffffff Task MAIN
Error status: 0
MCU temperature: min 15.0, current 25.8, max 25.9
Supply voltage: min 0.2, current 0.3, max 0.3, under voltage events: 0, over voltage events: 0, power good: no
12V rail voltage: min 0.1, current 0.1, max 0.2, under voltage events: 0
Driver 0: ok, reads 0, writes 0 timeouts 0, SG min/max 0/0
Driver 1: ok, reads 0, writes 0 timeouts 0, SG min/max 0/0
Driver 2: ok, reads 0, writes 0 timeouts 0, SG min/max 0/0
Driver 3: ok, reads 0, writes 0 timeouts 0, SG min/max 0/0
Driver 4: ok, reads 0, writes 0 timeouts 0, SG min/max 0/0
Driver 5: ok, reads 0, writes 0 timeouts 0, SG min/max 0/0
Date/time: 2020-11-08 14:26:06
Slowest loop: 2.36ms; fastest: 0.13ms
=== 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 ===
Hiccups: 0(0), FreeDm: 375, MinFreeDm: 375, MaxWait: 0ms
Bed compensation in use: none, comp offset 0.000
=== MainDDARing ===
Scheduled moves: 0, completed moves: 0, StepErrors: 0, LaErrors: 0, Underruns: 0, 0  CDDA state: -1
=== AuxDDARing ===
Scheduled moves: 0, completed moves: 0, StepErrors: 0, LaErrors: 0, Underruns: 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 ready with "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.
=== Network ===
Slowest loop: 1.03ms; fastest: 0.01ms
Responder states: HTTP(0) HTTP(0) HTTP(0) HTTP(0) HTTP(0) HTTP(0) FTP(0) Telnet(0), 0 sessions Telnet(0), 0 sessions
HTTP sessions: 0 of 8
- Ethernet -
State: disabled
Error counts: 0 0 0 0 0
Socket states: 0 0 0 0 0 0 0 0
=== CAN ===
Messages sent 0, longest wait 0ms for type 0
=== Linux interface ===
State: 0, failed transfers: 0
Last transfer: 12ms ago
RX/TX seq numbers: 19460/19461
SPI underruns 0, overruns 0
Number of disconnects: 0
Buffer RX/TX: 0/0-0
=== Duet Control Server ===
Duet Control Server v3.1.1
Code buffer space: 4096
Configured SPI speed: 8000000 Hz
Full transfers per second: 5.64

M122 DSF

m122 DSF
=== Diagnostics ===
RepRapFirmware for Duet 3 MB6HC version 3.1.1 running on Duet 3 MB6HC v1.01 or later (SBC mode)
Board ID: 08DJM-956L2-G43S8-6J9D0-3S46T-9U2LF
Used output buffers: 1 of 40 (12 max)
=== RTOS ===
Static ram: 154604
Dynamic ram: 161360 of which 20 recycled
Exception stack ram used: 236
Never used ram: 76996
Tasks: NETWORK(ready,1980) HEAT(blocked,1452) CanReceiv(suspended,3820) CanSender(suspended,1488) CanClock(blocked,1436) TMC(suspended,252) MAIN(running,4512) IDLE(ready,76)
Owned mutexes:
=== Platform ===
Last reset 00:12:41 ago, cause: power up
Last software reset at 2020-11-05 20:48, reason: User, spinning module LinuxInterface, available RAM 74612 bytes (slot 3)
Software reset code 0x0010 HFSR 0x00000000 CFSR 0x00000000 ICSR 0x0444a000 BFAR 0x00000000 SP 0xffffffff Task MAIN
Error status: 0
MCU temperature: min 25.6, current 25.8, max 26.0
Supply voltage: min 0.3, current 0.3, max 0.3, under voltage events: 0, over voltage events: 0, power good: no
12V rail voltage: min 0.1, current 0.2, max 0.2, under voltage events: 0
Driver 0: ok, reads 0, writes 0 timeouts 0, SG min/max not available
Driver 1: ok, reads 0, writes 0 timeouts 0, SG min/max not available
Driver 2: ok, reads 0, writes 0 timeouts 0, SG min/max not available
Driver 3: ok, reads 0, writes 0 timeouts 0, SG min/max not available
Driver 4: ok, reads 0, writes 0 timeouts 0, SG min/max not available
Driver 5: ok, reads 0, writes 0 timeouts 0, SG min/max not available
Date/time: 2020-11-08 14:28:49
Slowest loop: 1.97ms; fastest: 0.13ms
=== 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 ===
Hiccups: 0(0), FreeDm: 375, MinFreeDm: 375, MaxWait: 0ms
Bed compensation in use: none, comp offset 0.000
=== MainDDARing ===
Scheduled moves: 0, completed moves: 0, StepErrors: 0, LaErrors: 0, Underruns: 0, 0  CDDA state: -1
=== AuxDDARing ===
Scheduled moves: 0, completed moves: 0, StepErrors: 0, LaErrors: 0, Underruns: 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 ready with "M122 D0 S0 F0" 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.
=== Network ===
Slowest loop: 1.03ms; fastest: 0.01ms
Responder states: HTTP(0) HTTP(0) HTTP(0) HTTP(0) HTTP(0) HTTP(0) FTP(0) Telnet(0), 0 sessions Telnet(0), 0 sessions
HTTP sessions: 0 of 8
- Ethernet -
State: disabled
Error counts: 0 0 0 0 0
Socket states: 0 0 0 0 0 0 0 0
=== CAN ===
Messages sent 0, longest wait 0ms for type 0
=== Linux interface ===
State: 0, failed transfers: 0
Last transfer: 12ms ago
RX/TX seq numbers: 24793/24794
SPI underruns 0, overruns 0
Number of disconnects: 0
Buffer RX/TX: 0/0-0
=== Duet Control Server ===
Duet Control Server v3.1.1
Code buffer space: 4096
Configured SPI speed: 8000000 Hz
Full transfers per second: 32.80

I was able to get the PWM convertor working from this thread. Since then I've upgraded to a Duet 3 MB6HC, now I can now control my VFD through DWC. However the RPMs shown on the VFD are different than what is selected in DWC.

M950 R0 C"vfd+out7" Q3000 L5999:24001                   ; create spindle #0 connected to vfd pin and 24k rpm at full PWM
M563 P1 S"Spindle" R0                                ; create tool #1 with spindle 0
M568 P1 F0                                  ; set initial tool #0 active and standby temperatures to 0C
T1                                          ; select tool 1
M3 T1 S0
M5

RPM set in DWC on the left and RPM shown on the VFD on the right.
7000 = 6000
8000 = 6384
9000 = 7752
10000 = 9100
11000 = 10465
12000 = 11830
13000 = 13200
14000 = 14550
15000 = 15930
16000 = 17300
17000 = 18650
18000 = 19990
19000 = 21310
20000 = 22465
21000 = 23570
22000 = 24000

@dc42 damn I'm an idiot. I see that now. I had some of those laying around and didn't realize those were the ones not to use. I'll have to order more green converter boards and see if I can get those to work.

I do have 1 of these 3.3v boards. https://www.amazon.com/dp/B08CRKRBX4?ref=ppx_yo2ov_dt_b_fed_asin_title
But would that work with a duet 3 mini?

@dc42 I confirmed the wiring is correct. I tested the voltage output at the PWM+/- pins and I can see the voltage changing when I adjust the speed in DWC.

This is the wiring

I have a relay connected to io4.out that shorts DCM to FOR when the spindle is turned on.

M950 R0 C"0.vfd+0.io4.out" Q3000 L24000                   ; create spindle #0 connected to vfd pin and 24k rpm at full PWM
M563 P1 S"Spindle" R0                                ; create tool #1 with spindle 0
M453                                        ; set cnc mode
M568 P1 F0                                  ; set initial tool #0 active and standby temperatures to 0C
T1                                          ; select tool 1
M3 T1 S0
M5

I know this is working because when I turn the spindle I can hear the relay clicking and the numbers and the FOR LED on the VFD LCD go solid.

The jumper was moved from J2 to J1. I have the VFD configured for:
PD001 = 1
PD002 = 2
PD070 = 0

@dc42 12v power is coming from the 12v pins next to the VFD header.

@dc42 Yes I have. The connections are

PWM Input - > VFD GND Pin
PWM Input + > VFD(out6_buff) pin
Power Supply + > 12v+ next to VFD pins
Power Supply - > 12v- next to VFD pins
Voltage output - (GND) goes to ACM
Voltage output + (AO) goes to VI(I've also tried AI)

My config is

M950 R0 C"0.vfd+0.io4.out" Q3000 L24000                   ; create spindle #0 connected to vfd pin and 24k rpm at full PWM
M563 P1 S"Spindle" R0                                                      ; create tool #1 with spindle 0
M453                                                                                     ; set cnc mode
M568 P1 F0
T1
M3 T1 S0
M5

@dc42 You sir are correct. I did get the wrong board. I installed an actual PWM to Voltage converter and wired it up. This is the one I'm using now

Voltage output - (GND) goes to ACM
Voltage output + (AO) goes to VI(I've also tried AI)

I have a relay connected
NO > DCM
COM > FOR
Right now I'm switching it with a macro but eventually I'll get it configured to automatically switch when the drive is working correctly. I know the relay is working because when I switch it on the FOR LED on the VFD goes to solid.

I set:
PD001 = 1
PD002 = 1
PD070 = 0
I've moved the jumper to J1 enabling external potentiometer. I've tested the AO and GND and I am getting about 4.8v at 12k RPMs. But the VFD isn't recognizing the signal from the PWM converter

Any help would be greatly appreciated

@dc42 From what I can see it's the HY02D211B VFD. I've got it kind of working. I can control the speed from S6000 to S7000 but it'll max out at 7000, even if I enter s24000.

RRF version 3.5.4
Wifi Server 2.2.0
DWC 3.5.4

I've got a jumper wire in between DCM and FOR on the VFD
Out6_buff/VFD goes to pulse input +
and VFD GND goes to pulse input -
This is the one I'm using link text

; Configuration file for Duet WiFi (firmware version 3.4.6)
; executed by the firmware on start-up
;
; generated by RepRapFirmware Configuration Tool v3.4.6 on Wed Oct 10 2023 (Central Standard Time)

; General preferences
M552 S1                                     ; enable wifi
G90                                         ; send absolute coordinates...
M83                                         ; ...but relative extruder moves
M550 P"CNC"                                 ; set printer name
M453                                        ; configure CNC mode

; Kinematics
M669 K0                                     ; configure Cartesian kinematics

; Drives
M569 P0.0 S0                          		; physical drive 0.0 goes forwards
M569 P0.1 S1                          		; physical drive 0.1 goes backwards
M569 P0.2 S0                          		; physical drive 0.2 goes backwards
M584 X0 Y1 Z2                               ; set drive mapping

M350 X16 Y16 Z16 I1               	    	; configure microstepping with interpolation
M92 X800.00 Y800.00 Z400.00         	    ; set steps per mm
M566 X500.00 Y500.00 Z200.00                ; set maximum instantaneous speed changes (mm/min)
M203 X1500.00 Y1500.00 Z2000.00             ; set maximum speeds (mm/min)
M201 X1000.00 Y1000.00 Z1500.00                ; set accelerations (mm/s^2)
M906 X1800 Y1800 Z1700 I10                  ; set motor currents (mA) and motor idle factor in per cent
M84 S100                               	    ; Set idle timeout
M204 P1500 T3000

; Axis Limits
M208 X0 Y0 Z0 S1                        	; set axis minima
M208 X316 Y200 Z130 S0                       ; set axis maxima

; Endstops
M574 X1 S1 P"!0.io3.in"                       ; configure active-high endstop for low end on X via pin
M574 Y1 S1 P"0.io5.in"                       ; configure active-high endstop for low end on Y via pin
M574 Z2 S1 P"!0.io6.in"                     ; configure active-high endstop for high end on Z via pin

; Fans
M950 F0 C"0.out5" Q200      	                          	; create fan 0 on pin out9 and set its frequency
M106 P0 C"Board Fan1"                      ; set fan 0 value. Thermostatic control is turned off

; Spindle Control
M950 R0 C"0.out6" Q70 L6000:24000                   ; configure spindle #0
M950 P1 C"0.out3" Q500 
M42 P1 S0
M950 P2 C"0.out4" Q500 
M42 P2 S0

; Tools
M563 R0 P0 S"Spindle"                                 ; create tool #0
M453
M568 P0 F0                                  ; set initial tool #0 active and standby temperatures to 0C
G10 P0 X0 Y0 U0 Z0                          ; set tool 0 axis offsets
G10 P0 R0 S0                                ; set initial tool 0 active and standby temperatures to 0C

; Mist Control
;M950 F0 C"0.out6" Q20000      	                          	; create fan 0 on pin out9 and set its frequency
;M106 P0 C"Mist Control" S0 L0.15 X0.85 H-1                     ; set fan 0 value. Thermostatic control is turned off

; Miscellaneous
M564 S0 H0								;Allow movement without homing (without axis maxima)
;T0                                          ; select first tool
M575 P1 S1 B57600

; Custom settings are not defined

@dc42
My VFD is the 110v 2.2kw 80mm spindle purchased from Amazon and is supposedly a clone of this one.

Closest thing I could find from HY is this one

Otherwise the only thing I have from the seller is a paper manual.

I have my 110v 2.2kw liquid cooled spindle working. I've got the pump wired to the VFD so when the spindle is running the pump is running. I've been searching the forums for a few days and I can't seem to find anything clear that I need to do for my setup.

I can control the RPM through the dial on the front of the VFD. However I'd like full control through DWC as in being able to use start, stop and change RPMs.

I've seen posts that say since I have a duet 3 mini, using the VFD pins all I have to do is connect:
DCM to GND to ground the VFD and the Duet 3 mini
FOR to out6 on the Duet 3 mini to control RPM

I also have a frequency to voltage converter like this one.

So my question is, what's the correct way to do this so I have full control over the spindle through DWC?