I would like to use a small Arduino board as the basis of a 10-key HID with LEDs for each key. I guess the LEDs would be able to stay on or flash or pulse depending. I would like the LED state to be modifiable by keypresses but also the state of the computer. Thus I could press a key to induce a ce…

10-key macropad keyboard with LED indicators

DrDiettrich September 30, 2017, 12:32pm 4

You may have to spend some pins for other purposes, e.g. for the communication of the keyboard state. Also during programming the circuit attached to RX/TX must be disconnected.

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10-key macropad keyboard with LED indicators

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