Sinclair ZX80 / ZX81 / Z88 Forums

Hi Paul, the issue 1 photos are in a socket on the board and is operational, The issue 3 board still has a soldered in ula on it so i just placed the MK4 ula over it for the piurposes of taking a photograph. https://i.ibb.co/1JsxX7F/20230828-123924-1.jpg https://i.ibb.co/FwXWpYg/20230828-123929-1.jp...

wow that oversized case is amazing, looks great

Andy

Yes folks you heard it here first... Very much still a work in progress using real 5v part :mrgreen: nobody wants stinky 3.3v stuff :lol: Shall we play a game? spot the difference.... https://i.ibb.co/4MxjJV2/20230827-215548.jpg Got it yet? On the left we have altera unobtanium, Whilst on the right ...

These idea's all loook great, myy clear top keycaps have arrived... gonna see about printing some legends and hope i can get them straight

of course the simple solution would be to order the right key switches with the location pegs...

looking forward to seeing your progress and how those clear top keycaps work out.

Andy

Hi guys... reworked everything so should ( but have not tested ) be an easier fit. not very good with this dropbox thing but...here goes STLS https://www.dropbox.com/scl/fo/jpcsm9e80n038sxvc4ucu/h?rlkey=tmf3hzt4kupfxeclt4tfbsbs6&dl=0 print faceplate with bobbles up, and print case with the open end ...

Ah well... 3d printer to the rescue again, although i'm sure that with enough time and patience you coudl do it with card and a metal strraight edeg, and exacto knife., https://i.ibb.co/PcKvD00/Untitled.png that's upside down, the little squares are to hold this away from the PCB. it wasn't without ...

a bit late but yeah... pictures... click for larger image Cherry Blues, two part 3d printed case with 6degree angle and black 3d printed backplate for key switches. so no gaps and can't see PCB between keys Still haven't decide how to go for keycaps yet Those WASD ones are blooming nice but $$$ http...

the ebay keyboard turned up and was immediately torn apart

have to make some sort of case now. but have a 3d printer so happy days

will post photo of progress so far when I get home.

still not sure what I am doing for key caps yet.

regards andy

@paul, not sure a genuine ula can clock at 13 mhz, with the clock doubling it was fed with 6.5 and the clock to the cpu was from the clock doubling circuit, that kept cpu and ula in sync. hmm I have an altera ula zeddy that does clock doubling worth trying with the zpand to see if reading data from ...