in arduino/plant_reference.ino [105:120]
void sendData()
{
digitalWrite(LED_BUILTIN, HIGH); // Blink stat LED
sprintf(MQTTMessage,
"AT+SEND1 { \"temperature\": %i, \"waterLevel\": %i, \"light\": %i, \"soilMoisture\":%i }\n",
temperature,
waterLevel,
light,
soilMoisture);
// send the json payload over MQTT
expresslinkExecuteCommand(MQTTMessage);
digitalWrite(LED_BUILTIN, LOW); // Turn off stat LED
}