I have developed an adapter for using USB keyboards and mice over ADB. View a video demonstration of the prototype below. It is powered by the ADB bus and hosts USB keyboards, mice, and hubs. The production version will have an integrated hub with two ports (one keyboard, one mouse).
The prototype is functional, but there is a lot of work left to do. Designing the PCB, implementing some additional firmware features I have planned, designing an enclosure, implementing a test suite, etc. Expecting to be able to ship them in 1Q 2017.
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