Sinclair ZX80 / ZX81 / Z88 Forums

Thanks both, looking hopeful then.

I've made up a 30cm cable for a first pass. Just waiting for my boards to arrive now

Looks good! :) BTW You might find my Twister (JACE -> ZX81) useful and more details are there: http://www.jupiter-ace.co.uk/hardware_twisterboard.html Thanks, this will and allow a ZX81RAM pack etc. Very useful :) I am wondering what ribbon cable length will be tolerated, I guess I can just try and...

Question: Does anyone happen to have a KiCAD model of the external edge connector for the Ace I can use? If not I will create my own. I knocked these up this evening with a view to connecting them via a 50 way IDC connector. Connecting into the back of the Ace to a ribbon cable -- I have a ZX81 edg...

Now the internal connectors are taken out to the back panel, I aim to create a bus extender so that I can add internal upgrades, and/or make the expansion connector available for external upgrades. Question: Does anyone happen to have a KiCAD model of the external edge connector for the Ace I can us...

Thanks for those that have taken Ace keyboard PCBs from me; I hope you have fun putting them together. I'd love to see some pics of them in action. Here is how mine finally went together in my case. Boy what a difference it makes to have a real keyboard on the machine :) IMG_7642.jpeg IMG_7645.jpeg ...

Looks good 8-) :D < Slinks away to go and shake the piggy bank to see what level the funds are at... > So if you do sell some boards, I would definitely be interested in buying one ;) The existing keyboard on mine is okay for occasional use, but does my head in if I actually try to code using it :t...

Now I've tweaked the board design to remove the previous issues, the new board works a treat!

Just offering the keyboard up into the donor case, hopefully it will fit with a bit of a jiggle...

Prototype Keyboard is working 8-) Just a couple of niggles to sort out then I can share with those who want one: 1. A8 and A10 are swapped on my layout 2. The Symbol Shift is next to the Shift key instead of next to the SPACE key Other than that, it worked first time :lol: IMG_7600.jpeg IMG_7599.jpe...

Hi Claudius, Thanks, Yup I can confirm it was a Russian seller for the main PCB. I’m looking forward to getting a full keyboard working and the machine housed a case before I decide if I want to build any expansion boards. I will have a few keyboard PCBs spare due to minimum order but let’s see if i...

Right, that's the keyboard drawn up in Kicad. Now to do a quick check before sending off. Screenshot 2020-08-11 at 16.18.31.png Screenshot 2020-08-11 at 16.15.15.png I went for Cherry MX1A 1U PCB Switches in the end. I guess I'll go for blank keycaps with labels for a starter. Update: Said labels at...