Audio probe (mostly) completed
I have completed most of the physical construction of the audio probe.
A pretty key improvement is using florist's tape to wrap the wires and cables, instead of the shiny black rubber tubes I was using before. In order to be able to thread the wires through the tubes, I had to use quite thick tubes which didn't really fit. The florist's tape (waxed green crêpe) ends up looking quite organic. The color fits much better with the probes as well.
Follow the jump for (boring) pictures of the light probe, retrofitted with florist tape, and close-ups.
Here's the light probe, with the cables now wrapped in florist tape. Almost done!
And a close-up of a sensor + LED pod on the audio probe.