Hi everyone and thank you for helping me out. I'm having a problem running code on my nodeMCU v1.0. Basically I'm building a smart greenhouse with for a school project and my professor provided the hardware specs. Basically I have a program that runs on an Arduino UNO where i collect data, print them on a screen, manage irrigation, and last, to send the data to the nodeMCU so that with the second program running on it, i can send the data to Thingspeak. The problem is that the nodeMCU seems like not running, If i upload and example code on it, for instance the blink example, it works perfectly fine, but if I put my own code in, that little bih doesn't even go trought setup. PS: Sorry for bad english and the comments on the code but im italian :slight_smile: These are my two separate programs. this is the nodeMCU one /* CODICE PER IL NODEMCU DELLA SERRA */ #include #include //variabili per la connessione e la trasmissione dati a thingspeak unsigned long myChannelNumber =; const char *ssid = ""; const char* password = ""; const char *myWriteAPIKey = ""; //variabili timer unsigned long lastTime = 0; unsigned long timerDelay = 30000; float terreno, temperatura, umidità, co2; float valori[4]; WiFiClient client; void setup(){ //inizio la comunicazione seriale con arduino Serial.begin(115200); while(!Serial) { ;//aspetto che la porta seriale si connetta } WiFi.mode(WIFI_STA); ThingSpeak.begin(client); } void loop(){ if((millis() - lastTime) > timerDelay){ //conneto/riconnetto ad internet if(WiFi.status() != WL_CONNECTED){ Serial.print("Attempting to connect"); while(WiFi.status() != WL_CONNECTED){ WiFi.begin(ssid, password); delay(500); } Serial.println("\nConnected"); } ricevoValori(); //ricevo i valori da arduino e li invio a thingspeak for(int i=0; i < 4; i++){ int x = ThingSpeak.writeField(myChannelNumber, (i+1), valori[i], myWriteAPIKey); //controllo se gli ha inviati fr if(x == 200){ Serial.println("Canale aggiornato correttamente"); }else { Serial.println("errore nell' aggiornamento del canale. errore HTTP: " + String(x)); } } lastTime = millis(); } } void ricevoValori(){ //funzione che separa la stringa ricevuta nelle variabili che servono String stringaRicevuta; //leggo la stringa ricevuta dal seriale if(Serial.available() > 0) { stringaRicevuta = Serial.read(); } terreno = splitString(stringaRicevuta, ',', 0).toFloat(); temperatura = splitString(stringaRicevuta, ',', 1).toFloat(); umidità = splitString(stringaRicevuta, ',', 2).toFloat(); co2 = splitString(stringaRicevuta, ',', 3).toFloat(); //assegno i valori all'array secondo l'ordine che segue thingspeak valori[0] = temperatura; valori[1] = umidità; valori[2] = terreno; valori[3] = co2; } String splitString(String str, char sep, int index) { int found = 0; int strIdx[] = { 0, -1 }; int maxIdx = str.length() - 1; for (int i = 0; i index ? str.substring(strIdx[0], strIdx[1]) : ""; } and this is the one that runs on the UNO: /* -----------------------CHIAVI API THINGSPEAK--------------- CHIAVE SCRITTURA ----> 1Z0VG5H3GCZYYHV3 CHIAVE LETTURA ------> ZEXONIXDAWCI7O84 */ #include #include #include #include #include #include #include //definisco le variabili globali #define SCREEN_WIDTH 128 #define SCREEN_HEIGHT 64 #define OLED_RESET 4 // pin reset lcd #define SCREEN_ADDRESS 0x3C //dal datasheet Adafruit_SSD1306 display(SCREEN_WIDTH, SCREEN_HEIGHT, &Wire, OLED_RESET); #define NUMFLAKES 10 // Number of snowflakes in the animation example #define LOGO_HEIGHT 16 #define LOGO_WIDTH 16 static const unsigned char PROGMEM logo_bmp[] = { 0b00000000, 0b11000000, 0b00000001, 0b11000000, 0b00000001, 0b11000000, 0b00000011, 0b11100000, 0b11110011, 0b11100000, 0b11111110, 0b11111000, 0b01111110, 0b11111111, 0b00110011, 0b10011111, 0b00011111, 0b11111100, 0b00001101, 0b01110000, 0b00011011, 0b10100000, 0b00111111, 0b11100000, 0b00111111, 0b11110000, 0b01111100, 0b11110000, 0b01110000, 0b01110000, 0b00000000, 0b00110000 }; int soilSensor1 = A3; #define dhtpin 7 #define dhttype DHT11 #define co2AnalogPin A2 #define co2DigitalPin 2 #define co2Zero 140 //valore da sistemare poi, calibrazione da fare a scuola DHT dht(dhtpin, dhttype); //variabili rele pompe int pompa1 = 7; int pompa2 = 6; int pompa3 = 5; //bottone lcd int bottone = 10; int contatore = 1; //massimo 4 //timer per l'invio dati ogni 30 secondi unsigned long previousMillis = 0; unsigned long interval = 500; SoftwareSerial espSerial(5, 6); //5=TX 6=RX void setup(){ Serial.begin(9600); pinMode(soilSensor1, INPUT); //set up del sensore umidità terreno // controllo che la corrente venga data correttamente if(!display.begin(SSD1306_SWITCHCAPVCC, SCREEN_ADDRESS)) { Serial.println(F("SSD1306 allocation failed")); for(;;); // Don't proceed, loop forever } //-------------------------------------------- OLED SETUP ----------------------------- //buffer del display e logo(imposto nella libreria) display.display(); delay(1000); //pulisco il buffer display.clearDisplay(); // disegno un singolo pixel per controllare il display display.drawPixel(10, 10, SSD1306_WHITE); // uso display.display per far vedere quello disegnato precedentemente display.display(); delay(1000); //--------------------DHT---------------- dht.begin(); //--------------------CO2---------------- pinMode(co2AnalogPin, INPUT); //---------------ACQUA------------- pinMode(pompa1, OUTPUT); pinMode(pompa2, OUTPUT); pinMode(pompa3, OUTPUT); //-----------NODEMCU--------------- espSerial.begin(115200); //mando su questo canale le informazioni al seriale del NODEMCU } void loop(){ scritturaLCD(SoilSensor(), temperaturaAria(), umiditaAria(), qualitaAria(), valoreBottone()); irrigazione(); //con il timer invio i dati al nodeMCU che poi li invierà a thingspeak unsigned long currentMillis = millis(); if(currentMillis - previousMillis > interval){ previousMillis = currentMillis; inviaDati(); } } float SoilSensor(){ float percentualeTerreno = ( 100 - ( (analogRead(soilSensor1)/1023.00) * 100 ) ); //calcolo percentuale di umidità return(percentualeTerreno); } float temperaturaAria(){ float temperatura = dht.readTemperature(); return temperatura; } float umiditaAria(){ float umidita = dht.readHumidity(); return umidita; } float qualitaAria(){ int co2now[10]; //int array for co2 readings int co2raw = 0; //int for raw value of co2 int co2comp = 0; //int for compensated co2 int co2ppm = 0; //int for calculated ppm int zzz = 0; //int for averaging for (int x = 0;x<10;x++){ //samplpe co2 10x over 2 seconds co2now[x]=analogRead(co2AnalogPin); delay(200); } for (int x = 0;x<10;x++){ //add samples together zzz=zzz + co2now[x]; } co2raw = zzz/10; //divide samples by 10 co2comp = co2raw - co2Zero; //get compensated value co2ppm = map(co2comp,0,1023,400,5000); return co2ppm; } int valoreBottone(){ int valore = 1; //aumento il valore ogni premuta di tasto if(digitalRead(bottone) == 1){ //premo il bottone if(valore == 4) { valore = 1; }else { valore += 1; } } return valore; } void scritturaLCD(float soilReading, float temperatura, float umidita, float co2, int selezione){ // selezione valore del bottone int grafX = 0; display.clearDisplay(); display.setTextSize(1); // Normal 1:1 pixel scale display.setTextColor(SSD1306_WHITE); // Draw white text display.setCursor(0, 0); // Start at top-left corner display.cp437(true); // Use full 256 char 'Code Page 437' font switch(selezione) { case 1: //temperatura dell'aria display.setTextSize(2); display.setTextColor(WHITE); display.setTextColor(0,0); display.println("AIR TEMPERATURE"); display.println(""); display.print(temperatura); display.print(" C"); grafX = map(temperatura, 0, 40, 0, 127); display.fillRect(0, 52, grafX, 10, WHITE); break; case 2: //umidità dell aria display.setTextSize(2); display.setTextColor(WHITE); display.setTextColor(0,0); display.println("AIR HUMIDITY"); display.println(""); display.print(umidita); display.print(" %"); grafX = map(umidita, 0, 100, 0, 127); display.fillRect(0, 52, grafX, 10, WHITE); break; case 3: //umidità del terreno display.setTextSize(2); display.setTextColor(WHITE); display.setTextColor(0,0); display.println("SOIL HUMIDITY"); display.println(""); display.print(soilReading); display.print(" %"); grafX = map(soilReading, 0, 100, 0, 127); display.fillRect(0, 52, grafX, 10, WHITE); break; case 4: //livelli co2 display.setTextSize(2); display.setTextColor(WHITE); display.setTextColor(0,0); display.println("AIR TEMP"); display.println(""); display.print(co2); display.print(" C"); grafX = map(co2, 0, 1000, 0, 127); display.fillRect(0, 52, grafX, 10, WHITE); break; } display.display(); } //---------------FUNZIONE IRRIGAZIONE----------------- void irrigazione(){ float terreno = SoilSensor(); // percentuale umidità terreno //se l'umidità è minore del 25 bagno tutto if(terreno < 25){ digitalWrite(pompa1, HIGH); digitalWrite(pompa2, HIGH); digitalWrite(pompa3, HIGH); delay(2000); //da sistemare poi dopo che abbiamo visto quanta acqua esce digitalWrite(pompa1, LOW); digitalWrite(pompa2, LOW); digitalWrite(pompa3, LOW); } } //---------------------INVIO DATI AL NODEMCU------------------------------- void inviaDati(){ float terreno, temperatura, umidita; int co2; //prendo i dati con le funzioni terreno = SoilSensor(); temperatura = temperaturaAria(); umidita = umiditaAria(); co2 = qualitaAria(); //invio i dati secondo questo ordine espSerial.println(String(terreno) + "," + String(temperatura) + "," + String(umidita) + "," + String(co2)); }

Your topic was MOVED to its current forum category as it is more suitable than the original

You might use some serial.print statements. Simply stating in setup that you are starting, your sketch name then the name of each function as you enter it. That will help narrow down the problem for you. Posting schematics, not frizzy pictures helps a lot as do links to technical information of each hardware device.

A good schematic will also form part of the documentation for your project [image] How to make a schematic you can post. Introductory Tutorials When you submit a question on the forum you will usually need to add a schematic (circuit diagram). The tutorial that follows will explain some ways to create a useful image; however lets start by explaining how to add the image to your post. Its easy. Having created the image all you need to do is : Save the image somewhere convenient - maybe your desktop Start your post, and place the cursor (insertion point) where you want the image to be shown; [upload image to forum] 3: click th…

[image] matteoPrada: WiFi.mode(WIFI_STA); ThingSpeak.begin(client); setting the WiFi-mode and then executing a Thingpeak.begin(client) is wayyyy tooo les to make it work You should look up by qoogling how establishing a connection to ThingSpeak works. Your code is missing mutliple steps to establish the connection. Search with the keywords nodeMCU tutorial send data to ThingSpeak To find a demo-code that demonstrates it. best regards Stefan

NODEMCU problem, doesn't run code but examples work fine

Projects Programming

johnerrington March 5, 2022, 6:58am 4

A good schematic will also form part of the documentation for your project

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NODEMCU problem, doesn't run code but examples work fine

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