RE: Project14 | DIY Test Instrumentation: Build Your Own Test Instrumentation!: Automated Cable Tester ii

DAB — Thu, 24 Jun 2021 19:01:57 GMT

Reminds me of one of my early jobs in building a missile test station.

Dozens of cables, hundreds of wires.

I was very glad when that job was done.

DAB

RE: Project14 | DIY Test Instrumentation: Build Your Own Test Instrumentation!: Automated Cable Tester ii

Jan Cumps — Thu, 24 Jun 2021 15:54:17 GMT

Chris,

Routing 50 I/Os is quite a task.

I know that you use CAN a lot in your design.

It's hard to get i2c routed over a distance, because it doesn't have a physical layer designed to go far.

Would it help to build CAN-commanded 50-pin connectors? Not complex ones, just smart enough to be able to read/write each of the pins?

edit. I'm not referring to the cable tester, I'm referring to the requirement to have cable beams of 50 I/O wires from one component to the next ...

in the late 80's I worked for truck company DAF, and these were the things I struggled with at the time [View:/resized-image/__size/16x16/__key/commentfiles/f7d226abd59f475c9d224a79e3f0ec07-0c8fa355-8f3c-4d04-9b86-a44d3bbd4864/contentimage_5F00_1.png:16:16]:

[View:/resized-image/__size/620x539/__key/commentfiles/f7d226abd59f475c9d224a79e3f0ec07-0c8fa355-8f3c-4d04-9b86-a44d3bbd4864/contentimage_5F00_208208.png:620:539]

Image source: wiring harness of a DAF 95. Source: https://www.trucks.nl/tweedehands-daf-kabelboom-95-ati-4642437-vd

CAN should solve at least part of that.