Following on from the above, we have had quite a lot of rain recently and my Tool Verification sequence is no longer usable. It works well as long as the UMT and the tools are perfectly dry but fails to detect if either is a little bit wet.
Continuity has been tested and the cable and its connectors are fine.
I have found an imperfect workaround but I’m neither sure why it works nor how to improve it. Any idea from the open source community would be gratefully received!
The workaround consists in bridging the heads of the relevant screws with aluminium foil. When I do that, my detection rates are 100% successful. What’s weird is that the “official” jumper link is correctly positioned inside the tool head in positions B and C and I don’t understand why the aluminium foil makes a difference.
It’s obviously an imperfect solution as the foil won’t stay in that position.