My rain sensor measures rainfall in a 10 minute interval. The number of millimeters is sent every 10 minutes via LoRaWan (TTN) to NodeRED in the format payload.neerslag (like 0.55 mm).
I want to display what the precipitation is per day and therefore I want to use the aggregator node to add up the rainfall of 10 minutes each over 24 hours. Unfortunately that doesn't work well, the debug output is always NaN.
Can anyone let me know how to get this working?