I have successfully created a payload formatter for my LGT92 tracker. And I have created a webhook to a ThingSpeak channel. I now get a cool gauge showing my battery level
But in ThingsSpeak I also want to record the SNR and RSSI of messages. As far as I understand I have to return those as data fields in the payload formatter, just as I did with the battery level. But I have no access to SNR and RSSI in the formatter. So how do I do that?