I have problem using ESP32 with ThingSpeak; viceversa, when I use the ESP8266 no problem.

The problem is related to that no any data is published.

I attach the code I am using to push the data:

if (client.connect(serverTS,80)) {  //   "184.106.153.149" or api.thingspeak.com
              String postStr = apiKey;
                     postStr +="&field1=";
                     postStr += String(t);
                     postStr += "\r\n\r\n";

               client.print("POST /update HTTP/1.1\n");
               client.print("Host: api.thingspeak.com\n");
               client.print("Connection: close\n");
               client.print("X-THINGSPEAKAPIKEY: "+apiKey+"\n");
               client.print("Content-Type: application/x-www-form-urlencoded\n");
               client.print("Content-Length: ");
               client.print(postStr.length());
               client.print("\n\n");
               client.print(postStr);

               Serial.print("Temperature: ");
               Serial.print(t);
               Serial.println("% send to Thingspeak");    
            }
            client.stop();

            Serial.println("Waiting...");    
            // thingspeak needs minimum 15 sec delay between updates

Hi Domenico.

Modify your first lines so that you have something as follows.

String postStr = "api_key=";
postStr += apiKey;
postStr +="&field1=";
postStr += String(t);
postStr += "\r\n\r\n";

Then, tell me if it works.

Regards,
Sara

Yes, thanks, I tried it unsuccessfully.
I attach the link to monitor the data, best regards.
https://thingspeak.com/channels/80188
 

Hi Domenico.

Try this code instead:
https://pastebin.com/m3gsfgsv

Replace with your network credentials and the thingspeak Write API key.

As an example, it is publishing a random number. Replace with your sensor readings.

I’ve tried the example and it is working fine.

I hope this helps.

Regards,
Sara

Dear Sara,
thanks it works fine ! BR, Domenico
 

Great|
I’ll mark this question as resolved.
If you need further help, you just need to open a new question.
Regards,
Sara