ThingSpeak

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I am making a sample project from Arduino Project Hub - Plant Communicator On TS I receive data only 2 times after I upload the sketch. I want to upload data every minute, the first two minutes are successful, after that my Serial monitor shows "message sent to cloud" but nothing new shows up on TS. I also tried with another sketch that just generates numbers and uploads them on TS to make sure that there is nothing wrong with the sensors that I use in this project. With the sketch that generates random numbers and sends them to TS, I get the same outcome: data is uploaded first and second time, after that nothing. (Both sketches compiled without errors. Instead of using WiFi I tried to make a hotspot from my phone - doesn't help either.) Thanks for any help! #include "arduino_secrets.h" #include <WiFi101.h> #include<WiFiSSLClient.h> #include <RTCZero.h> #include "ThingSpeak.h" const char* ssid = SECRET_SSID; // your network SSID (name) const char* password = SECRET_PSWD; // your network password WiFiClient ThingSpeakClient; unsigned long myChannelNumber = 10; const char * myWriteAPIKey = SECRET_WRITE_API; RTCZero rtc; // create RTC object /* Change these values to set the current initial time */ const byte seconds = 0; const byte minutes = 28; const byte hours = 17; /* Change these values to set the current initial date */ const byte day = 4; const byte month = 12; const byte year = 17; int lightPin = A0; //the analog pin the light sensor is connected to int tempPin = A1; //the analog pin the TMP36's Vout (sense) pin is connected to int moisturePin= A2; // Set this threeshold accordingly to the resistance you used // The easiest way to calibrate this value is to test the sensor in both dry and wet earth int threeshold= 800; bool alert_already_sent=false; bool email_already_sent=true; bool already_sent_to_cloud=true; void setup() { Serial.begin(9600); while(!Serial); delay(2000); Serial.print("Connecting Wifi: "); Serial.println(ssid); while (WiFi.begin(ssid, password) != WL_CONNECTED) { Serial.print("."); delay(1500); } Serial.println(""); Serial.println("WiFi connected"); rtc.begin(); // initialize RTC 24H format rtc.setTime(hours, minutes, seconds); rtc.setDate(day, month, year); rtc.setAlarmTime(17, 30, 0); // Set the time for the Arduino to send the email ThingSpeak.begin(ThingSpeakClient); rtc.setAlarmTime(0, 0, 0); //in this way the request is sent every minute at 0 seconds rtc.enableAlarm(rtc.MATCH_SS); rtc.attachInterrupt(thingspeak_alarm); } void loop() { if(!already_sent_to_cloud){ ThingSpeak.setField(1,get_light()); ThingSpeak.setField(2,get_temperature()); ThingSpeak.setField(3,get_average_moisture()); ThingSpeak.writeFields(myChannelNumber, myWriteAPIKey); delay(1500); already_sent_to_cloud=true; delay(1500); Serial.println("message sent to cloud"); delay(1500); } } float get_temperature(){ int reading = analogRead(tempPin); float voltage = reading * 3.3; voltage /= 1024.0; // Print tempeature in Celsius float temperatureC = (voltage - 0.5) * 100 ; //converting from 10 mv per degree wit 500 mV offset // Convert to Fahrenheit float temperatureF = (temperatureC * 9.0 / 5.0) + 32.0; return temperatureC; } int get_average_moisture(){ // make an average of 10 values to be more accurate int tempValue=0; // variable to temporarly store moisture value for(int a=0; a<10; a++){ tempValue+=analogRead(moisturePin); delay(1000); } return tempValue/10; } int get_light(){ int light_value=analogRead(A0); return light_value; } void thingspeak_alarm(){ already_sent_to_cloud=false; }