Duet3/pi DCS is unavailable after wiring 24V

fractalengineer

@dc42 said in Duet3/pi flashing Diag LED after wiring 24V DCS is unavailable:

@fractalengineer, we suspect a problem with either the Duet or the ribbon cable. However we would like you to try with the latest firmware first. @chrishamm is building a new firmware image, and will post to this thread when it is ready.

Got it; will try the image, thanks to you both for your answer.

I will check continuity on the ribbon in the meantime
Edit: All strands of the ribbon show continuity from one side to the other (tested by probing the sockets pins on the pi and duet)

A Former User

@fractalengineer said in Duet3/pi flashing Diag LED after wiring 24V DCS is unavailable:

I will check continuity on the ribbon in the meantime

measuring could provide enough pressure on pins to make a connection if poorly terminated connector, but still probaly a worth while test given shipping delays everywhere i suppose.

if you have some supplies you can roll your own; i wanted other stuff in there on the pi, but still a single connector on the Duet3 and the power grouped so mine is a little untraditional perhaps. Still 5 signals + 4 power is all you really need, 1:1 straight connection.

(can use a bunch of single wire female-female jumpers as well)

chrishamm

@fractalengineer Please flash RRF 3.01-RC7 using bossa and this image on your SD card using Win32DiskImage or Etcher: https://pkg.duet3d.com/testing/image_2020-04-14-DuetPi.zip When you are done, please start the Pi, connect to it via SSH or open a terminal from an attached monitor, and send sudo journalctl -u duetcontrolserver -e. Once done, please post the output here.

fractalengineer

@chrishamm Hi Chris, thank you for the image; I just completed all the steps, still no luck; same issue.

pi@duet3:~ $ sudo journalctl -u duetcontrolserver -e
Apr 15 02:56:16 duet3 systemd[1]: duetcontrolserver.service: Succeeded.
Apr 15 02:56:21 duet3 systemd[1]: duetcontrolserver.service: Service RestartSec=
Apr 15 02:56:21 duet3 systemd[1]: duetcontrolserver.service: Scheduled restart j
Apr 15 02:56:21 duet3 systemd[1]: Stopped Duet Control Server.
Apr 15 02:56:22 duet3 systemd[1]: Started Duet Control Server.
Apr 15 02:56:22 duet3 DuetControlServer[1737]: Duet Control Server v1.3.2
Apr 15 02:56:22 duet3 DuetControlServer[1737]: Written by Christian Hammacher fo
Apr 15 02:56:22 duet3 DuetControlServer[1737]: Licensed under the terms of the G
Apr 15 02:56:25 duet3 DuetControlServer[1737]: [info] Settings loaded
Apr 15 02:56:25 duet3 DuetControlServer[1737]: [info] Environment initialized
Apr 15 02:56:26 duet3 DuetControlServer[1737]: [fatal] Duet is not available
Apr 15 02:56:26 duet3 systemd[1]: duetcontrolserver.service: Succeeded.
Apr 15 02:56:31 duet3 systemd[1]: duetcontrolserver.service: Service RestartSec=
Apr 15 02:56:31 duet3 systemd[1]: duetcontrolserver.service: Scheduled restart j
Apr 15 02:56:31 duet3 systemd[1]: Stopped Duet Control Server.
Apr 15 02:56:31 duet3 systemd[1]: Started Duet Control Server.
Apr 15 02:56:32 duet3 DuetControlServer[1777]: Duet Control Server v1.3.2
Apr 15 02:56:32 duet3 DuetControlServer[1777]: Written by Christian Hammacher fo
Apr 15 02:56:32 duet3 DuetControlServer[1777]: Licensed under the terms of the G
Apr 15 02:56:35 duet3 DuetControlServer[1777]: [info] Settings loaded
Apr 15 02:56:35 duet3 DuetControlServer[1777]: [info] Environment initialized
Apr 15 02:56:36 duet3 DuetControlServer[1777]: [fatal] Duet is not available
Apr 15 02:56:36 duet3 systemd[1]: duetcontrolserver.service: Succeeded.

@bearer thanks; I probed the pins on the underside of the boards with the ribbon connected; that should validate good continuity through the ribbon and contact in the connectors?

Cheers

A Former User

@fractalengineer said in Duet3/pi flashing Diag LED after wiring 24V DCS is unavailable:

@bearer thanks; I probed the pins on the underside of the boards with the ribbon connected; that should validate good continuity through the ribbon and contact in the connectors?

its hard to say other than "probably" and "maybe". but given the effort already made to troubleshoot i'd think the sensible thing is to replace both.

fractalengineer

@bearer But is it really? I probed the pins directly on the board like so and they all showed continuity; that is the direct signal from one board to another

@chrishamm any feedback on the image result?

Thanks

A Former User

@fractalengineer said in Duet3/pi flashing Diag LED after wiring 24V DCS is unavailable:

But is it really? I probed the pins directly on the board like so and they all showed continuity; that is the direct signal from one board to another

unless the probe exert no force on the board and connector, I'll stick to "probaly", or even "most likely" but at the end of the day it doesn't matter, the cable is a fraction of the cost of the board so just get both replaced for good measure even if its most likely not a cable fault.

Azul

@fractalengineer same problem i just completed the procedure described still no luck

dc42

@fractalengineer, thanks for doing that. We suspect a hardware problem. Please ask your supplier to replace the Duet and ribbon cable under warranty. You may refer your supplier to this post for authorisation.

@Azul, please start a new thread for your issue, explaining what the problem is, what software versions you are using, and what you have tried.

fractalengineer

@dc42 Hi Tony; well ok I bought it directly from Duet, order #7829. Will send a request RMA. Thanks

dc42

@fractalengineer said in Duet3/pi flashing Diag LED after wiring 24V DCS is unavailable:

@dc42 Hi Tony; well ok I bought it directly from Duet, order #7829. Will send a request RMA. Thanks

In that case, see https://www.duet3d.com/warranty for the procedure.

fractalengineer

Hi Again...

So I just received my replacement board and I'm still getting an error

Here's what I did upon opening up the box:

1-Wrote @chrishamm image on the SD card
2-Flashed the board to 3.01 RC7 using Bossa
3-Connected the pi to the board

Here's the error message I get; it's different than last time:

pi@duet3:~ $ sudo journalctl -u duetcontrolserver -e
Apr 23 11:09:06 duet3 DuetControlServer[2500]: Licensed under the terms of the G
Apr 23 11:09:09 duet3 DuetControlServer[2500]: [info] Settings loaded
Apr 23 11:09:09 duet3 DuetControlServer[2500]: [info] Environment initialized
Apr 23 11:09:10 duet3 DuetControlServer[2500]: [fatal] Duet is not available
Apr 23 11:09:10 duet3 systemd[1]: duetcontrolserver.service: Succeeded.
Apr 23 11:09:15 duet3 systemd[1]: duetcontrolserver.service: Service RestartSec=
Apr 23 11:09:15 duet3 systemd[1]: duetcontrolserver.service: Scheduled restart j
Apr 23 11:09:15 duet3 systemd[1]: Stopped Duet Control Server.
Apr 23 11:09:15 duet3 systemd[1]: Started Duet Control Server.
Apr 23 11:09:16 duet3 DuetControlServer[2566]: Duet Control Server v1.3.2
Apr 23 11:09:16 duet3 DuetControlServer[2566]: Written by Christian Hammacher fo
Apr 23 11:09:16 duet3 DuetControlServer[2566]: Licensed under the terms of the G
Apr 23 11:09:18 duet3 DuetControlServer[2566]: [info] Settings loaded
Apr 23 11:09:19 duet3 DuetControlServer[2566]: [info] Environment initialized
Apr 23 11:09:20 duet3 DuetControlServer[2566]: [fatal] Duet is not available
Apr 23 11:09:20 duet3 systemd[1]: duetcontrolserver.service: Succeeded.
Apr 23 11:09:25 duet3 systemd[1]: duetcontrolserver.service: Service RestartSec=
Apr 23 11:09:25 duet3 systemd[1]: duetcontrolserver.service: Scheduled restart j
Apr 23 11:09:25 duet3 systemd[1]: Stopped Duet Control Server.
Apr 23 11:09:25 duet3 systemd[1]: Started Duet Control Server.
Apr 23 11:09:26 duet3 DuetControlServer[2596]: Duet Control Server v1.3.2
Apr 23 11:09:26 duet3 DuetControlServer[2596]: Written by Christian Hammacher fo
Apr 23 11:09:26 duet3 DuetControlServer[2596]: Licensed under the terms of the G

I don't understand what's going on anymore.

Following the getting started guide I even enabled SPI and started DCS; still no luck

Really bummed out now; any idea what to do?

I left all the components version as is from the image:

pi@duet3:~ $ apt list 2>/dev/null | grep duet
duetcontrolserver/now 1.3.2 armhf [installed,local]
duetruntime/now 1.3.2 armhf [installed,local]
duetsd/now 1.0.6 all [installed,local]
duetsoftwareframework/now 1.3.2 armhf [installed,local]
duettools/now 1.3.2 armhf [installed,local]
duetwebcontrol/now 2.1.2 all [installed,local]
duetwebserver/now 1.3.1 armhf [installed,local]

chrishamm

Do you have a spare Raspberry Pi? If you can confirm proper connectivity between the Pi and the Duet 3, then the only option left is a damanged SPI controller on the Pi itself.

fractalengineer

@chrishamm We tried another pi on the previous board already, that's why I'm so confused

I can try again on the new one

A Former User

@fractalengineer said in Duet3/pi flashing Diag LED after wiring 24V DCS is unavailable:

2-Flashed the board to 3.01 RC7 using Bossa

did you confirm the new firmware version with M115 or M122 after flashing?

(not that it'd matter, but they have released RC9 since last time.)

fractalengineer

@bearer yep

M115
FIRMWARE_NAME: RepRapFirmware for Duet 3 MB6HC FIRMWARE_VERSION: 3.01-RC7 ELECTRONICS: Duet 3 MB6HC v0.6 or 1.0 FIRMWARE_DATE: 2020-04-14b3

I'll try RC9 fwiw

Edit: Yeah RC9 no luck

A Former User

Not to make light of the situation, but I did say you should get the volcano insurance..

So you've tried new pi, new cable, new duet.

That leaves power supply?

fractalengineer

@bearer lol

Well so far I tried different USB ports, including the 3A charging port, and powersupply when powered through VIN is a brand new MeanWell 350W 24V

The 5 and 3.3V power lights on the Duet are on as they should when plugged in usb

A Former User

Unless you've got a scope or a logic analyzer I'm out of ideas; sorry.

fractalengineer

@bearer yes I'm looking forward to try another pi

One thing happened to me once on a quadcopter

It used a separate board for ESC connected to the flight controller board by pwm

One day I plugged in and one motor started acting funny; then after trying to connect to the firmware front end it got worse, and eventually, the flight controller became unresponsive.

A couple messages back and forth with the FC designer (used an STM32 F7 chip; wasn't junk) he told me he had experiences of shorts happening on the ESC, running back to the FC board and frying sectors of the chip

Anyway I have no clue what's going on, but if anything I would like to try if there's a possibilty something on the old board may have fried the SPI capability of my pi on top of it's own

New duet and new pi must do something