Please tell me if that is a great idea or a really great idea.
Anyway, the theory is that you can connect 2 STM32S to walky-talkies, and then transmit data readable only by a touchscreen, over a distance. This would greatly improve chatting on devices. Correct me if any of the above info is incorrect.
then maybe the walky talky replaced by a small 2-way radio which would connect neatly to the UART port. It would only be about 2cm by 3cm by 2cm. the antenna could somehow be connected to the side of the box with glue.
a 3pin cable can be used.
post reply when you can help get this project running. it must be running by 21 july