Connecting a tool board to Distribution board CAN_OUT
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Have you definitely connected the wires to the two middle pins of the RJ11 connector? Have you tried swapping the two wires? Does another tool board work with the same cable?
Duet WiFi hardware designer and firmware engineer
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@dc42 Yes, I swapped cables and tool boards with the same result. I swapped with the PIN 1 and 2 on the tool board with the same results.
Connecting 1LC´s using the distribution board works perfectly.
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Have you used a multimeter to test your cable for continuity?
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@DDD said in Connecting a tool board to Distribution board CAN_OUT:
same result
with the risk of repeating myself; maybe you're overlooking something that someone here would spot if you added a picture.
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Continuity was checked and there is no problem there. Double-checked the resistor and its a 120 ohm one.
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If you peel off the tape, insert the RJ11 plug into the RJ12 socket on the Duet do you have continuity from the Duet to the exposed leads after the plug?go with dc42's approach, much more elegant as usual!
At a distance it looks like the crimp might have left the contacts at an angle
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Here's another test: plug the RJ11 connector into the Duet, then with power off measure the resistance across your 120 ohm resistor. It should read 60 ohms, because the 120 ohm terminator on the Duet should be connected in parallel with it via the cables.
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Seems like the RJ11 connector is the one to blame, continuity is present between 1LC and the connector but somehow the connector makes no contact with the CAN connector.
I'll get a adsl cable to salvage the connectors and hopefully solve this issue
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@DDD said in Connecting a tool board to Distribution board CAN_OUT:
Seems like the RJ11 connector is the one to blame
If you don't mind could you do a close up of it? and which tool was used? Might be good to add to the knowledgebank of the hivemind to try to understand why it turned out the way it did.
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It's fixed. Got another set of RJ11 connectors from a different vendor and everything worked out. Maybe those were defective. Old RJ11 connectors run out after a few tests, so comparing them against new ones is not possible.
I was using a generic RJ11 crimping tool with a generic RJ11 source from a local electronics shop.
It is worth mentioning that one time I over crimped the connector. There was conductivity from the 1LC to RJ11 but not from 1LC connected to the CAN connector on the mainboard.
