I can see the wire break in the cable chain :'(
this post was submitted on 04 Aug 2024
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I left probably too large loops in those places, but I've seen some nasty cable breaks when I worked with pipeline inspection tools so I'm kinda paranoid about having enough slack.
Umbilical folds on itself pretty well, I probably have mine too high tbh, but I could see a tophat mod being a thing. What you gain in less wires with can, you do add complexity to your overall setup, ran into some timeout issues after upgrading my SBC which seems to be related to this crowsnest issue thread that I've got sorted. Usb toolheads are a good idea, I went can because I'm using that for an ercf anyhow and already had bunch of usb devices.
I had no idea about cable chain slack when building :( I wouldn't call the wires tight, but they're not super duper loose either.
I work in automotive and have a bit too much experience with CAN. It is appealing to have fewer wires in the chains, but so far wire breaks have been super easy to find/fix. I'm somewhat tempted to give chains with discreet wires another go. It shouldn't take more than 4-5 hours to have a cut and crimped to lenth harness installed.
I am tempted to start researching a BOM for USB + top hat though.
Last time I used can was for battery controllers on one tool family back in pipelining, people kept losing or forgetting the terminators.
There's the nighthawk toolhead for Stealthburners that's one of those usb umbilical boards, and did look at this printable tophat in the past.
I definitely ran spares in my cable chain as the less I need to open them the better, if I did discreet wiring on a new build though I very much might consider running something like a multi conductor cable through the cable chains with a smaller one for power+ground, build in some allowances for spares just to be safe.
The nighthawk looks interesting. I'm somewhat tempted to give it a go, but I'm not sure about ditching the chains for a top hat yet. All the multi conductor cables I looked at that are USB rated are not rated for the tight bend radii found in the Voron chains :(