ThingSpeak

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I isolated a var that I'm interested in, and I want to connect Node-RED to thingspeak to show the values on the graph. The problem is the node "mqttout": I connected it to the server mqtt3.thingspeak.com and the port 1883, and with the device with right username and password. It shows "connected", but the graph is still the same, I can not upload the varabiles. mqtt connection problem Have you created an MQTT device in ThingSpeak and given permissions for MQTT to write to the channel? See the instructions in the MQTT Basics. Yes I have it, I don't know why it doesn't work I reccomend troubleshooting using the desktop client. You can see instructions in the help link I send above. Also , a common casue of not seing data on the field plots is sending non numeric data by accident. Make sure to export the recent data in your channel to be sure its not there but in an unexpected format. mqtt connection node-red upload

I have an ESP32 that has 5 values (solarW, batteryV, pumpW, pumpRPM and pumpLPM) that I'm writing to 5 fields on a Thingspeak channel. if ((millis() - fifteenTstart) > 15000){ Serial.println("Updating Thingspeak...."); ThingSpeak.setField(1, solarW); ThingSpeak.setField(2, batteryV); ThingSpeak.setField(3, pumpW); ThingSpeak.setField(4, pumpRPM); ThingSpeak.setField(5, pumpLPM); int x = ThingSpeak.writeFields(myChannelNumber, myWriteAPIKey); if(x == 200){ Serial.println("Channel update successful."); } else{ Serial.println("Problem updating channel. HTTP error code " + String(x)); } } It works fine when there's a good connection to the internet and Thingspeak, but there's a 10 second or so delay when Thingspeak is unavailable (WiFi, internet or website non-connectivity). I would like the code to recognise that there's no ThingSpeak connection musch faster (1 second or less woud be good, but I'll take two!). Or, if it's possible to just send the data out without the code waiting for a confirmation back (I only need the data to go OUT from the ESP32 to Thingspeak, nothing needs to come back). Need faster Thingspeak connection timeout in ESP32 code MQTT is more of a fire and forget routine that you can use with ThingSpeak, though you may still have some connection delay. Our REST interface requires your client to wait for the response from the server. If you disconnect before the response with the REST interface, your data wont be posted. I've also been able to get paralell processes running on an ESP32, here is one tutorial I've used. Thanks Christopher. Looks like the parallel prcoessing route will be a good solution. I didn't know the ESP32 had dual core processing, definitely worth learning about! Multi threading is fun, but it does add some serious complexity to debugging. I would still recomend MQTT for this purpose and do the multi threads for learning sake. Good luck either way. thingspeak esp32 updating speed delay faster code connection