radio stuff

Meshtastic

Ios add channels atm

it's not possible to add channels via qr at the moment without replacing all channels
copy the channel key instead and add it manually

Add buzzer

https://adrelien.com/blog/how-to-add-buzzer-to-diy-esp32-heltec-lora-meshtastic-node/

Mesh-finland

https://mesh-finland.github.io