Unfortunately, wireless is not yet an easy task. The simplest implementation I’ve seen is ESP-NOW, that @Liam120347 Has looked into here:
For something as simple as button pressing, I’d imagine that you could do the whole thing as just radios transmitting on different frequencies and demodulated into pins on the MCU, but this is outside my skill set for now. Maybe someone with more experience in the analog domain can chime in?
