will break this into a couple of posts due to number of photos
have been working on some of the instrumentation lately. it is slow going and takes a long time to show any sort of progress and I got tired of waiting so decided to throw up some shots of progress so far.
setting out the locations

setting out the layout for the transponder

wiring up the first selector, this was a single pole that I later replaced with a double pole rotary as I wanted to control a small set of Leds at the same time

then it was the long slow and laborious process of marking drilling and filing out the front plate.

a plastic breadboard provides the materials for the buttons


then I had to cut the actual front sheet that goes over the dark plastic

like so

these next three are of the power supply test rig I made up following plans found online so I could test the buttons.

