It would depend if "Escape" requires a specific non-standardized scan code or not. (Even if it did you could also try sending the Ctrl-[ variety instead.)
Random piece of keyboard trivia: On Mac OS X (and I assume current variants) each keyboard is a separate "entity" with e.g. separate state which includes caps lock state. This means that the USB "Capslocker" gag USB dongles that randomly toggled Caps Lock state didn't actually affect Macs.)
If anyone is really looking for a single-key macropad... the Seeeduino Xiao is a small microcontroller development board which would suit the purpose. e.g. https://www.40percent.club/2020/08/wonky.html
If you have a suitable Arduino (or compatible) lying around probably not a lot of work: https://www.arduino.cc/reference/en/language/functions/usb/k...
It would depend if "Escape" requires a specific non-standardized scan code or not. (Even if it did you could also try sending the Ctrl-[ variety instead.)
(It's even possible to get away with not using USB-specific hardware, like I did in the "old days": http://code.rancidbacon.com/ProjectLogArduinoUSB :D )
Random piece of keyboard trivia: On Mac OS X (and I assume current variants) each keyboard is a separate "entity" with e.g. separate state which includes caps lock state. This means that the USB "Capslocker" gag USB dongles that randomly toggled Caps Lock state didn't actually affect Macs.)