So I was right about power supply noise being the problem with the pop-up circuit. I added a 330nF capacitor across the power input terminals and that solved it. I also wired on the power leads and connectors.
I was going to wait until final assembly to add on the back lights but it occurred to me I could just leave them wired in but unfitted and complete the wiring.
So a full mock up was needed to see if any last problems arose and it's all working nicely. On to the LCD board version reed switches and magnets.
http://s225.photobucket.com/user/sir...tml?sort=3&o=0
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Stanley Kubrick
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David Bowie