Duet3D Logo Duet3D
    • Tags
    • Documentation
    • Order
    • Register
    • Login

    Toolboard & dist board burning smell and strange behavior

    Scheduled Pinned Locked Moved
    Duet Hardware and wiring
    2
    4
    174
    Loading More Posts
    • Oldest to Newest
    • Newest to Oldest
    • Most Votes
    Reply
    • Reply as topic
    Log in to reply
    This topic has been deleted. Only users with topic management privileges can see it.
    • gnydickundefined
      gnydick
      last edited by

      I have 4 tools. Everything's been working fine. Today I heard a whine coming from one of the toolboards and found that it was the fan attached to the 3 pin header. When I turned the fan on it stopped. Whine came back when the fan was set to all zeros, S, X, L.

      I swapped toolboards for a new one and the same thing happened. I put that one up to my ear and I must have grazed it and triggered the 4 pin connector next to the extruder port. I have a couple of buttons connected to that port and it was acting as if one of those buttons was being held down and wouldn't stop. It's a filament sensor attached, so it just kept trying to feed filament.

      I found that if I touch the board next to the connector, it triggers it.

      I tried that on the other boards on the other dist board ports and none of the other ones do it.

      It happens on 2 out of 2 toolboards connected to the same distribution connector. I haven't tried swapping anything else as I don't want to risk more possible damage.

      I know the boards are connected via network, so there is no direct signaling, but is it possible there is a bad port on the distribution board?

      1 Reply Last reply Reply Quote 0
      • Phaedruxundefined
        Phaedrux Moderator
        last edited by

        You mention burning smell in your title but don't address it in your post. Was there damage? A short?

        Also I don't 100% follow what you're describing.

        Z-Bot CoreXY Build | Thingiverse Profile

        gnydickundefined 2 Replies Last reply Reply Quote 0
        • gnydickundefined
          gnydick @Phaedrux
          last edited by

          @phaedrux I'm not sure what part was unclear. But I'll try again now that I'm not exhausted.

          I have distro board and 4 tools.

          I have filament runout and load sensor along with an unload button connected to the 4 pin connector next to the extruder connector on the toolboard.

          There is a very slight electronics burning smell that I can't locate.

          Sometimes, if I touch the toolboard in a specific place, it triggers the filament load signal. I found exactly where it was on the back of the board to make it happen everytime. I can sometimes make it happen on the front of the board, but then I'm not touching all of the contacts that triggered it.

          I know this is very sketchy, I shouldn't be touching it, and I generally don't. I just discovered this by accident.

          I wonder if my mount is sightly conductive. It's CF GF PC, and I know CF can be conductive, but I thought it wouldn't be in the filament.

          I'll test it and let you know.

          1 Reply Last reply Reply Quote 0
          • gnydickundefined
            gnydick @Phaedrux
            last edited by gnydick

            @phaedrux I tested it the only way I know how. I took my multimeter and measured the resistance on a printed piece. Got open circuit.

            Then I scratched a groove in it and put the leads in and from about .5mm apart I got .1ohm.

            Does that mean it's too conductive? I should use something else?

            1 Reply Last reply Reply Quote 0
            • First post
              Last post
            Unless otherwise noted, all forum content is licensed under CC-BY-SA