I want to send data to ThingSpeak using Arduino

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seiya moro
seiya moro am 29 Mär. 2022
Kommentiert: seiya moro am 18 Apr. 2022
Currently, GPS data is acquired using Arduino on Simulink.
I want to send this data to ThingSpeak.
How should I set the microcomputer board?
Thank you very much!
  6 Kommentare
Nakul Khadilkar
Nakul Khadilkar am 13 Apr. 2022
Hi Seiya,
What WiFi shield are you using with the Mega?
seiya moro
seiya moro am 14 Apr. 2022
Bearbeitet: seiya moro am 14 Apr. 2022
Hi,
Now, I am using SHIELD-ESP-WIFI REV 2.0. with the Mega.
Also, is there a Wifi shield that I should buy?
Thank you very much.

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Antworten (2)

Vinod
Vinod am 14 Apr. 2022
Bearbeitet: Vinod am 14 Apr. 2022
The question title says "I want to send data to ThingSpeak using Arduino", which is answered by the answer here.
If you are interested in sending data to ThingSpeak using Simulink and Arduino, I would recommend watching this video as a starting point.
or this one:
  1 Kommentar
seiya moro
seiya moro am 18 Apr. 2022
Hi Vinod,
Sorry for the late reply.
I think it will be very helpful.
I will try this method.
Thank you very much!

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Jan Maly
Jan Maly am 13 Apr. 2022
Hello,
try bellow code, works for me.
#include <WiFiClientSecure.h> // you need this library, cos Thingspeak use SSL protocoal, so standard WIFIClient is not able to connect there
const char* ssid = "SSID name";
const char* password = "your password";
WiFiClientSecure client;
void connectToWIFI() {
Serial.print("Attempting to connect to SSID: ");
Serial.println(ssid);
WiFi.mode(WIFI_STA);
WiFi.begin(ssid, password);
while (WiFi.status() != WL_CONNECTED) {
Serial.print(WiFi.status());
delay(1000);
}
Serial.println("WiFi connected");
Serial.println("IP address: ");
Serial.println(WiFi.localIP());
}
void setup() {
Serial.begin(115200);
connectToWIFI();
}
void loop() {
httpRequestData = "api_key=YOURAPIKEY&field1=22.32&field22=12.89; //up to field 8
responseTime = millis();
Serial.println(" Starting connection to server thingspeak");
Serial.println(httpRequestData);
client.setInsecure(); //skip SSL verification
if (!client.connect("api.thingspeak.com", 443, 10000)) {
Serial.println("Connection failed! Reconnect!");
connectToWIFI();
} else {
Serial.print(" Connected to server!");
client.println("GET https://api.thingspeak.com/update?" + httpRequestData + " HTTP/1.0");
client.println("Host: api.thingspeak.com");
client.println("Connection: close");
client.println();
while (client.connected()) {
String line = client.readStringUntil('\n');
if (line == "\r") {
Serial.print(" Headers received "); // or display lito to get return code
break;
}
}
Serial.println(millis() - responseTime); //response time in miliseconds
client.stop();
}
}
be carefully, today i found, that only one request per 15 seconds can be send
  3 Kommentare
Jan Maly
Jan Maly am 14 Apr. 2022
Sorry, no idea. This is pure wire language. I use Arduino IDE software, to connect to device via USB and upload code above.
seiya moro
seiya moro am 15 Apr. 2022
I understand.
Thank you very much!

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