Compaq Plus to usb?

[ivanthetolerable]

Does anyone know how I would convert it to usb? I think it's standard XT like a Model F so I was hoping I can use a teensy. Any advice?

[nevin]

unfortunately i believe it's foam & foil.
you can easily tell by feel or removing a keycap
https://deskthority.net/wiki/Foam_and_foil
https://deskthority.net/wiki/Buckling_spring

[ivanthetolerable]

unfortunately i believe it's foam & foil.
you can easily tell by feel or removing a keycap
https://deskthority.net/wiki/Foam_and_foil
https://deskthority.net/wiki/Buckling_spring

Yes, I know it is. I'm building a sleeper inside the old case and wanted to make the keyboard usable. I was hoping to see if there's any guides to convert using a teensy

[nevin]

i'd be more worried about reliability of the foam & foil, unless you are replacing them as well.

if it does use the XT protocol, you could use either hasu's or soarer's converters.
hasu     https://geekhack.org/index.php?topic=72052.0
soarer   https://geekhack.org/index.php?topic=17458.0

check this thread, looks like they figured out the pinout of the connector

Code: [Select]

Female connector that plugs into the keyboard, fat side up:

 [123]
 |456|

 1: GND
 2: VCC (+12V)
 3: GND
 4: RST?
 5: DATA
 6: CLK
and this came up in the search and he repairs the foam & foil pads with replacements

[Tactile]

Soarer's converter running on a Teensy will do what you want. You can build it into the board or just throw together something like this:


Step one will be to identify the wires at the plug. There should be Power, ground, and two data wires. If you can identify power & ground, that's enough to hook up to a Soarer's converter. The data wires can be switched back & forth 'till the board works. There's no risk if you get them backwards.

[Findecanor]

Soarer's converter running on a Teensy will do what you want.

They should run on any board with an ATmega32u4, such as a Pro Micro clone -- which would be cheaper than the Teensy. Just be sure that the same port pins are available as the ones that the converter firmware uses. With Hasu's there are a few options for which pins to use. I think Hasu's would also work on a few other AVR microcontrollers.