M5Stack M5StickC CW Hat
Keying out with optocoupler for M5-ESP32-keyer. A 3.5mm JACK cable is enough to connect the radio.
https://github.com/ok1cdj/M5-ESP32-keyer
https://github.com/ok1cdj/M5-ESP32-keyer
Indicative exchange rate:
(1 EUR) 23.4606 Kč