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Learned a lot about the USB HID spec tonight as I turned a raspberry pi zero into an emulated keyboard that is controlled by a http api. I have it hooked up to my kvm switch’s keyboard hotkey port, which means I can now actuate the kvm switch over my network, effectively making a “dumb” kvm switch into a smart one. This was all done to work around a limitation that prevents me from using my usb keyboard’s built-in trackpad when it was plugged into the hotkey port, but I think this toy could be applicable for all kinds of things. Frankly I love the idea of making more USB gadgets like these, all kids of device classes can be emulated, and making dumb devices smart (but not too smart) becomes trivial