[Feature Request]: Arduino library for sending out arbritarty messages

[jrddupont]

The existing meshtastic firmware is excellent for devices used by people, bluetooth, web, serial, etc. But I often find myself wanting to send out simple update messages on arduino.

For example, lets say I have a soil moisture probe (or any random sensor that isn't supported natively) that I use to collect data in my garden that I want sent to my base station over meshtastic. I need the sensor setup to be ultra low power because I intend to have the solar cell charge up a super capacitor until I have enough juice to send just one message, and then shut off. One solution would be to connect the sensor to an arduino, have the arduino send sensor updates over serial to a meshtastic device, which then sends it over the air. However, this is a very complicated setup for what should be a simple task, and too power intensive for a battery-less device.

Ideally I would like a simple arduino device connected to a lora module with a meshtastic library on it that I can use to send simple messages.
eg:

void setup(){
    MeshtasticRadio radio;
    radio.pins(1, 2, 3); // Config lora module pins
    radio.meshtastic_config(region, preset, channels, keys, etc, etc);

    int soil_moisture = get_soil_moisture();
    
    radio.send_message(channel, "Soil moisture: " + soil_moisture ); // Or whatever, syntax isn't important

    turn_self_off();
}
void loop(){}