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    BLTouch and Duet 3 Tool Board

    Duet Hardware and wiring
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    • dc42
      dc42 administrators last edited by dc42

      This is a continuation of this thread https://forum.duet3d.com/topic/18640/multiple-errors-duet3/63. The first issue reported by user @dk and relevant to this thread is that BLTouch does not do a self-test when the tool board is powered up.

      I was unable to reproduce this. We thought that this might be due to me testing with a BLTouch version 3.0 whereas @dk has version 3.1. So I purchased a version 3.1.

      My results using BTouch 3.1 are the same as using version 3.0:

      • BLTouch always does a self-test when I power up the Tool Board
      • If I hold the BLTouch in the correct vertical orientation, the self test is always successful.
      • If I leave it lying on the bench then it sometimes enters the error state (flashing red) at the end of the self test
      • I have run these tests using a version 0.6 tool board, and using a version 1.0 tool board
      • I have tested using a Meanwell 24V power supply, and also using a bench power supply with the voltage varied between 5V and 12V. Surprisingly, it works with 5V input, even though the output voltage from the regulator and supply to BLTouch is only 3.66V.
      • The tool board firmware I used for these tests was 3.2beta1
      • To make sure than CAN commands from the main board could not interfere, I tested with the CAN connection between the tool board and the main board removed

      Here are photos of the setup I used. @dk, please can you check your wiring carefully against these photos. Have you tried it with more than one BLTouch? If so, did you use the cables supplied with each BLTouch, in case the original one had a cable fault? Are you using a bench setup similar to this, or is the BLTouch cable bundled with other cables?

      2020-10-15 11.02.55.jpg

      2020-10-15 11.15.42.jpg

      2020-10-15 11.15.23.jpg

      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

      oozeBot 1 Reply Last reply Reply Quote 0
      • oozeBot
        oozeBot @dc42 last edited by oozeBot

        @dc42 - we have this same issue. I have a Duet 3 / RPi and toolboard on my bench hooked to a Meanwell LSR-350-24. I also have a few brand new BL Touch v3.1.

        Would you please post the configs used for your testing? If so, I can try to perform the same test later today..

        1 Reply Last reply Reply Quote 0
        • dc42
          dc42 administrators last edited by dc42

          @oozeBot, the config files are not relevant if you test with the tool board not connected by CAN to the main board, as I did.

          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

          1 Reply Last reply Reply Quote 0
          • dc42
            dc42 administrators last edited by

            Progress! It occurred to me that the version 1.0 tool board I was testing with might be a pre-production one. I happened to have a recent production one, so I just tested it with BLTouch. The BLTouch fails to self test. Now I can investigate why.

            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

            oozeBot 1 Reply Last reply Reply Quote 2
            • oozeBot
              oozeBot @dc42 last edited by

              @dc42 if it helps, here is how we've worked around the issue.. maybe there is a clue in there.

              https://forum.duet3d.com/topic/18261/bltouch-v3-1-toolboard-resolution

              1 Reply Last reply Reply Quote 0
              • dc42
                dc42 administrators last edited by

                I've just discovered that if I disconnect the yellow servo control wire on the non-working board, then it does do a self test at power up. So I suspect it's to do with the initialisation of that pin.

                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

                1 Reply Last reply Reply Quote 0
                • dc42
                  dc42 administrators last edited by dc42

                  I have now identified the problem. The bootloader on current production tool boards sends debug information to the servo control pin, and this is confusing the BLTouch. The boards I was using that worked had a more recent bootloader installed.

                  The fix will be to install a new bootloader. At present, this can only be done using an Atmel ICE or similar tool. However, we have plans to allow the bootloader to be updated over CAN, and I will try to bring this work forward.

                  @dk, who did you purchase your tool boards from?

                  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

                  dk 1 Reply Last reply Reply Quote 0
                  • dk
                    dk @dc42 last edited by

                    @dc42

                    https://www.printedsolid.com all 3 of them

                    dc42 1 Reply Last reply Reply Quote 0
                    • dc42
                      dc42 administrators @dk last edited by

                      @dk, for now are you able to use the workaround that @oozeBot linked to?

                      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

                      dk 1 Reply Last reply Reply Quote 0
                      • dk
                        dk @dc42 last edited by

                        @dc42
                        @oozeBot
                        I add those 3 lines in my config file

                        M280 P0 S60 ; BLtouch - toggle switch mode
                        G4 P1000 ; wait 1 second
                        M280 P0 S120 ; BLtouch toggle self-test

                        , but BL-touch still does not perform self test at startup. M401 and M402 works
                        There exactly I should put these lines? Just before ; Z-Probe ?
                        Or at the top or bottom?
                        And do I need any modifications to those codes since I use Toolboard with CAN address 20, not 121?

                        oozeBot 1 Reply Last reply Reply Quote 0
                        • oozeBot
                          oozeBot @dk last edited by

                          @dk I put this at the very bottom of my config.. after defining the BLTouch.

                          Sorry I wasn’t clearer on this

                          dk 1 Reply Last reply Reply Quote 0
                          • Nuramori
                            Nuramori last edited by

                            Interesting. I have a 0.6 and 1.0 board, having used 3.1.1. I noticed the self test doesn’t “work” (the pin cycle doesn’t occur) but aside from that it still probes properly, and macros to self test work once it’s powered up.

                            1 Reply Last reply Reply Quote 0
                            • dk
                              dk @oozeBot last edited by

                              @oozeBot
                              Thank you! It performs self test now. 10 times (10 deploys and 10 retracts)

                              1 Reply Last reply Reply Quote 0
                              • oozeBot
                                oozeBot last edited by oozeBot

                                @dk Awesome! Glad to help.. this one was a bit maddening to figure out..!

                                1 Reply Last reply Reply Quote 0
                                • dc42
                                  dc42 administrators last edited by

                                  I hope to include the facility to update the bootloader on tool boards in RRF 3.2beta3.

                                  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

                                  oozeBot 1 Reply Last reply Reply Quote 0
                                  • oozeBot
                                    oozeBot @dc42 last edited by

                                    @dc42 said in BLTouch and Duet 3 Tool Board:

                                    I hope to include the facility to update the bootloader on tool boards in RRF 3.2beta3.

                                    David, did this make it into beta 3? Is so, are there any instructions on how to update the bootloader? Thanks

                                    Veti 1 Reply Last reply Reply Quote 0
                                    • Veti
                                      Veti @oozeBot last edited by

                                      @oozeBot said in BLTouch and Duet 3 Tool Board:

                                      David, did this make it into beta 3? Is so, are there any instructions on how to update the bootloader? Thanks

                                      see
                                      https://github.com/Duet3D/RepRapFirmware/blob/v3-dev/WHATS_NEW_RRF3.md

                                      [Duet 3 + expansion/tool boards] Expansion and tool boards can now have their bootloaders updated via CAN using the command M122 B# S3 where # is the board address. The bootloader file is Duet3Bootloader-SAME5x.bin for the EXP3HC board, Duet3Bootloader-SAMC21.bin for the other expansion boards by Duet3D, and Duet3Bootloader-SAMMYC21.bin for the Sammy-C21 development board. These files are available at https://github.com/Duet3D/Duet3Bootloader/releases.

                                      oozeBot 2 Replies Last reply Reply Quote 0
                                      • oozeBot
                                        oozeBot @Veti last edited by

                                        @Veti thank you - I missed that in the release notes.. trying now.

                                        1 Reply Last reply Reply Quote 0
                                        • oozeBot
                                          oozeBot @Veti last edited by

                                          @Veti

                                          Can I get a bit more clarification on what is needed to update the toolboard? I've uploaded all the .bin and .elf files to my system folder, but M122 B20 S3 is only reporting, not updating..

                                          M122 B20 S3
                                          Diagnostics for board 20:
                                          Duet TOOL1LC firmware version 3.2beta3 (2020-11-07)
                                          Bootloader ID: not available
                                          Never used RAM 4104, free system stack 96 words
                                          HEAT 43 CanAsync 88 CanRecv 82 TMC 53 MAIN 331 AIN 64
                                          Last reset 00:13:14 ago, cause: power up
                                          Last software reset data not available
                                          Driver 0: position 0, 840.0 steps/mm,  standstill, SG min/max 0/0, read errors 0, write errors 0, ifcount 12, reads 2901, writes 0, timeouts 0, DMA errors 0, failedOp 0xff
                                          Moves scheduled 0, completed 0, in progress 0, hiccups 0
                                          No step interrupt scheduled
                                          VIN: 24.2V
                                          MCU temperature: min 40.5C, current 41.8C, max 42.1C
                                          Ticks since heat task active 2, ADC conversions started 791830, completed 791829, timed out 0
                                          Last sensors broadcast 0x00000002 found 1 5 ticks ago, loop time 0
                                          Free CAN buffers: 36, messages lost 60, duplicates 0, oos 0, busOff 0
                                          
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                                          • oozeBot
                                            oozeBot last edited by

                                            @veti @dc42 I think the instructions are wrong.. I just tried M997 B20 S3 and it states:

                                            M997 B20 S3
                                            Board 20 starting bootloader update
                                            
                                            dc42 1 Reply Last reply Reply Quote 0
                                            • oozeBot
                                              oozeBot last edited by

                                              I can confirm BLTouch v3.1 is now self testing on the toolboard! Thanks again!

                                              1 Reply Last reply Reply Quote 0
                                              • dc42
                                                dc42 administrators @oozeBot last edited by dc42

                                                @oozeBot said in BLTouch and Duet 3 Tool Board:

                                                @veti @dc42 I think the instructions are wrong.. I just tried M997 B20 S3 and it states:

                                                M997 B20 S3
                                                Board 20 starting bootloader update
                                                

                                                Thanks for pointing this out. I have corrected the whatsnew-rrf3 file, also I have updated https://duet3d.dozuki.com/Wiki/Updating_the_bootloader_on_Duet_3_expansion_and_tool_boards.

                                                Use M122 B# to check what bootloader version is installed.

                                                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

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