MQTT->(JSON)->?->InfluxDB->Grafana

General
3

If the data is minimal, and you want to use the influx single node, this works for me -

if(msg.node == 18) {
    var temp = (msg[0])/100;
    var batt = (msg[1])/1000;
msg.payload = [{
    temp: temp,
    battery: batt
},
{
    device:"th18"
}];
msg.measurement = "iot";
return msg;
} else {
    return null;
    }

emon
emon.PNG738×160 13.6 KB

...so, I've got 4 sensors, and the 'if' condition only runs the function if the incoming flow contains msg.node == 18
device:"th18" is the tag
msg.measurement = "iot" is the measurement

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