CoreXY carriage wiring management

fma

Hi!

I'm thinking to use a flat ribbon cable to wire the carriage, making a vertical loop above it; any experience with such config, from a mechanical point of view?

I only need power and CAN, as I will use a Toolboard 1LC. For the power, I plan to connect several wires in // to handle the current. For CAN, I don't know if it requires special handling regarding to perturbations: is alternating signal/ground enough? Or should I use a shielded ribbon cable?

Thanks.

dc42

@fma for the CAN conductors, the ideal is twisted pair. You can get twisted pair ribbon cable. But I think you will be OK if you use ordinary ribbon cable with the two CAN conductors next to each other and ground conductors on both sides.

fma

@dc42 Thanks! I didn't think of twisted cables, it seems the best option.

fma

What current can handle a standard (28AWG?) ribbon cable?

infiniteloop

@fma said in CoreXY carriage wiring management:

What current can handle a standard (28AWG?) ribbon cable?

Signals and supply for IC's. If you really need to transmit more than some milli amps, use one of the numerous calculators on the web.

mrehorstdmd

@fma I used a flex ribbon in a printer several years ago. The cable came from a tape library robot. The printer is still in use and working perfectly. The only problem with it is interfacing to it at the ends. I ended up wiring a couple perf board circuits with screw terminals and headers. I had to double up some of the traces to ensure it would handle the current to the hot-end heater, and I think I used 4 traces for grounding.

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fma

Nice! I found on some datasheets that a ribbon cables can handle up to 1A, in free air. So, yes, using 2 wires for the power supply should be ok.