![]() ![]() MakerIoT2020 has added details to Designing a "more reliable" Matrix Keypad.Ricardo Hubner wrote a comment on Bengala Eletrônica Microcontrolada de baixo custo.service_elecrow liked PICOZX LCD - ZX Spectrum handheld.service_elecrow liked Raspberry Pi TOSLINK transceiver hat.mime on Teardown Of An Aircraft Video Symbol Generator.ewan colsell on They Used To Be A Big Shot, Now Eagle Is No More.Steve Ballmer on Too Much Git? Try Gitless. ![]() Retrotechtacular: Circuit Potting, And PCBs The Hard Way 7 Comments Posted in Peripherals Hacks, Retrocomputing Tagged keyboard, mechanical keyboard, zx81 Post navigation If you’re interested in the ZX81 then take a look at how we used one to help us through the pandemic. We have to admit liking this project a lot, in fact we’re even tempted by a set of these keycaps for a regular keyboard just for old time’s sake. None of these techniques were readily available to individuals back in the ’80s, so a large piece of perfboard, key switches from an old terminal keyboard, and Letraset would have had to suffice. There’s little more to a ZX keyboard than the matrix wiring, and in this case it’s all incorporated on a PCB. ![]() The familiar 40-key layout is all there, using Cherry MX key switches and a beautiful set of custom-printed keycaps. Now we can bring you what might be the ultimate in ZX replacement keyboards, in the form of ’s mechanical ZX81 keyboard. In particular that membrane keyboard was notorious for its lack of feedback, and a popular upgrade back in the day was a replacement keyboard. Sir Clive Sinclair’s ZX81 was a phenomenal sales success as one of the cheapest machines available in the early 1980s, but even its most fervent admirers will admit that it suffered heavily from the Sinclair economy drive. ![]()
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