Model H USB Controller Upgrade (IBM Model M)
Model H USB Controller Upgrade (IBM Model M)
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Thanks to QMK, the keyboard is fully programmable. It ships with a DFU-style bootloader, which can be programmed over USB.
Features
- Non-destructive upgrade - just swap the boards
- Native USB (with type B connector), no adapter required
- Doesn't require original controller
- STM32 ARM Processor @ 72MHz with 64kb flash
- Remappable keys (using QMK configurator)
- Uses open source QMK firmware
- Lower power (50 mA typical)
- Genuine "TE Connectivity Trio-mate" connectors, as used on the original Model M
- Model H QMK Firmware Source
Includes
Compatibility
Created by John Hawthorn
Customer Reviews
I ordered my Model H Board with shipping to Germany. It was actually in the country within one week, however DHL and customs took another two weeks before I could pick it up. I didn't have to pay customs or taxes, but the package had to be checked for its contents by the office. Since there was no extra cost and KEEBD themselves shipped really fast, I am very satisfied with the international shipping.
Now for the board itself, it arrived nicely packaged and preflashed with QMK. Since I wanted to do some custom mappings and preffered VIAL, I took the prebuilt VIAL firmware from GitHub (jberclaz/modelh).
Everything works as expected, all parts just fit well and I can now happily use my reprogrammable Model M.
As a sidenote:
To flash the board, you need to press the reset button after connecting USB and use dfu-util, so it's best to reflash it before putting it into the Model M case. If it's in DFU mode, the LED besides the reset button will blink continously.
If dfu-util shows 3 entries with the --list option, you need to specify '-a 2' as a parameter. DO NOT USE -a 1 or -a 0, otherwise the device will stop to boot and needs to be reflashed quickly after hitting reset.
This is indeed an excellent upgrade. It makes your Model M compatible with the latest connectivity standards. It’s also programmable. Installation is very easy and there is a 3D printed holder replacement. It works with both membrane types - old IBM with three connector and newer Lexmark with two connectors.
Great product! Very easy to install. If using QMK firmware & QMK toolbox to customize, toggle the auto-flash checkbox and plug in the keyboard via USB. The modelH runs the bootloader for a second or two after connecting, so firmware updates are super easy. I may pick up another one for my M 122.
Dropped right into my '94 IBM model F and just worked. I only wish that the model F had a super key...
The Model H USB Controller is excellent. Fits perfectly into the space the old controller occupied and gave new life to my 30+ year old keyboards. They have another 30 years left in them with this upgrade.