Hey there,
We are currently brazing our Cancoders. Currently 2 of our cancoders are working just fine but when we connect one of our cancoders, the light gets on however it gets really hot in just a few seconds unlike others. Does anyone know or have a guess what the problem can be? Any help will be appreciated.
Can you show us a picture of how the first two were wired versus the one that gets really hot? I can make a bunch of guesses, but without knowing what you have currently it’ll be a a guess at best and might not be applicable.
Reading through the wiring guide there’s only 6 wire connection spots and they seem pretty clearly marked so I don’t think it’s a case of V+ on the wrong spot. However it could be a case of an overly big solder blob on the backside of the component causing it to short.
The hardware user manual wiring instructions show placing the wire through the hole, then soldering/tinning the wire until the solder hole is filled. Then cut the excess wire. That works. But if you used too much solder or didn’t cut the excess wire down enough it can reach over to the next nearby holes which are CAN H or CAN L.
The first 3 pictures are photos of the working cancoder. The others belong to the cancoder with the heating problem.
Is this being used on a mk4i by chance? We had a stupid small issue with one of ours last year. The screws that hold down the case are very sensitive to the length, we had lost one of the screws and replaced it with one that was a 1/16" longer which caused it to bottom out and barely touch one of the solder joints. In our case it was on the ground side but if both sides barely touch it can cause a short across the leads. However unlikey this is it is something to check.
Yes we are using it on mk4i. But we have never mounted it. Therefore I think that’s not the problem
I’d check if there’s any warranty or applicable return policy, it may be a manufacturing defect.
We had this happen to one of our cancoders after 2 competitions of use (plus practice). When we checked it with a multimeter using the resistance between the power leads. We found that the broken one had significantly higher resistance and we opted to replace it with a new cancoder. It looks like we think the issue is that the housing was screwed in too tight causing the screw to touch the magnet causing a short. Not sure if that applies to you as you haven’t mounted it yet tho.
At least you know about that possibly happening. It took us a while to find the issue because as stupid as it sounds it affected the pneumatic control module and nothing else. The module would work then as soon as it was mounted and tilted it would have issues. We replaced the module like 3 times before we finally figured out it wasn’t the module and started checking everything else.
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