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Data not visible while sending for multiple fields
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October 12, 2020
8:26 am
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October 12, 2020
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Hello!! i'm trying to send data on thinkspeak for multiple fields but i'm only getting data for my field1 and field2 is not getting update. please help me in this ,Thank You.

#define USE_ARDUINO_INTERRUPTS true // Set-up low-level interrupts for most acurate BPM math.
#include // Includes the PulseSensorPlayground Library.
#include //Software Serial library
SoftwareSerial espSerial(2, 3); //Pin 2 and 3 act as RX and TX. Connect them to TX and RX of ESP8266
Adafruit_MLX90614 mlx = Adafruit_MLX90614();
#define DEBUG true
String mySSID = "XXXX"; // WiFi SSID
String myPWD = "xXXX"; // WiFi Password
String myAPI = "XXXXX"; // API Key
String myHOST = "";
String myPORT = "80";
String myFIELD1 = "field1";
String myFIELD2 = "field2";
int sendVal1;
int sendVal2;
const int PulseWire = 0; // PulseSensor PURPLE WIRE connected to ANALOG PIN 0
const int LED13 = 13; // The on-board Arduino LED, close to PIN 13.
int Threshold = 550; // Determine which Signal to "count as a beat" and which to ignore.
int myBPM; // Use the "Gettting Started Project" to fine-tune Threshold Value beyond default setting.
// Otherwise leave the default "550" value.

PulseSensorPlayground pulseSensor; // Creates an instance of the PulseSensorPlayground object called "pulseSensor"

void setup()

espData("AT+RST", 1000, DEBUG); //Reset the ESP8266 module
espData("AT+CWMODE=1", 1000, DEBUG); //Set the ESP mode as station mode
espData("AT+CWJAP=\""+ mySSID +"\",\""+ myPWD +"\"", 1000, DEBUG); //Connect to WiFi network
//Wait for connection

pulseSensor.blinkOnPulse(LED13); //auto-magically blink Arduino's LED with heartbeat.

// Double-check the "pulseSensor" object was created and "began" seeing a signal.
if (pulseSensor.begin()) {
Serial.println("We created a pulseSensor Object !"); //This prints one time at Arduino power-up, or on Arduino reset.

Serial.println("Adafruit MLX90614 test");



void loop()
/* Here, I'm using the function random(range) to send a random value to the
ThingSpeak API. You can change this value to any sensor data
so that the API will show the sensor data
sendVal1 = myBPM;
String sendData1 = "GET /update?api_key="+ myAPI +"&"+ myFIELD1 +"="+String(sendVal1);
espData("AT+CIPMUX=1", 1000, DEBUG); //Allow multiple connections
espData("AT+CIPSTART=0,\"TCP\",\""+ myHOST +"\","+ myPORT, 1000, DEBUG);
espData("AT+CIPSEND=0," +String(sendData1.length()+4),1000,DEBUG);

myBPM = pulseSensor.getBeatsPerMinute(); // Calls function on our pulseSensor object that returns BPM as an "int".
// "myBPM" hold this BPM value now.

if (pulseSensor.sawStartOfBeat()) { // Constantly test to see if "a beat happened".
Serial.println("♥ A HeartBeat Happened ! "); // If test is "true", print a message "a heartbeat happened".
Serial.print("BPM: "); // Print phrase "BPM: "
Serial.println(myBPM); // Print the value inside of myBPM.

sendVal2 = mlx.readObjectTempF();
String sendData2 = "GET /update?api_key="+ myAPI +"&"+ myFIELD2 +"="+String(sendVal2);
espData("AT+CIPMUX=2", 1000, DEBUG); //Allow multiple connections
espData("AT+CIPSTART=0,\"TCP\",\""+ myHOST +"\","+ myPORT, 1000, DEBUG);
espData("AT+CIPSEND=0," +String(sendData2.length()+4),1000,DEBUG);

Serial.print("\tObject = "); Serial.print(mlx.readObjectTempF()); Serial.println("*F");



String espData(String command, const int timeout, boolean debug)
Serial.print("AT Command ==> ");
Serial.println(" ");

String response = "";
long int time = millis();
while ( (time + timeout) > millis())
while (espSerial.available())
char c =;
response += c;
if (debug)
return response;

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