Hi,
When I needed a parallel ASCII keyboard, I decided to add one of these to a regular USB keyboard for a computer. https://www.hobbytronics.co.uk/product/host-board I used a PICAXE chip to take the data and convert it to TTL (RS-232 Friendly) serial data too. The modules are not sold anymore, but they do sell the chips. SIOC version: https://www.hobbytronics.co.uk/product/soic 28-PIN DIP version: https://www.hobbytronics.co.uk/product/host-dip ============================================================================================== C U L8r, °|° Walt Perko °|° "Kids ... teach them the good stuff, and they still learn the bad stuff on their own." http://www.R2Pv1.com/ RoboGuts™ Intelligent content for 3D printing making S.T.E.A.M. education better, easier and more affordable Experiments to learn how to use various Electronic Components, Structured Computer Programming, Phonemes for Speech &Song in any language, and Art. "The World Needs a New Economic Model" ============================================================================================== Sent from the Cyber7 From: M100 On Behalf Of Thomas Morehouse Sent: Tuesday, July 8, 2025 10:01 AM To: [email protected] Subject: Re: [M100] SPAM-LOW: 102 failing keys Being a card-carrying expert in absolutely nothing ... What about using a USB keyboard,running into a USB to serial cable, to the RS232c port. Then having some code in ROM/RAM to make the USB keyboard output mesh with the M100/2 keyboard reading circuit? Just sayin' Tom M. On Tue, Jul 8, 2025 at 12:52 PM John R. Hogerhuis <[email protected] <mailto:[email protected]> > wrote: On Tue, Jul 8, 2025 at 5:26 AM Alex ... <[email protected] <mailto:[email protected]> > wrote: Has anyone been able to track down replacement key switches rather than trying to rebuild 40 year old components? With all the rage about mechanical keyboards I'd be surprised if there wasn't a suitable alternative out there. It would probably be easier to create a new custom keyboard since that is totally DIY level now and it seems unlikely you could exactly match the key caps. The model t keyboard is decent but you could potentially make a better keyboard that way. -- John.
