Oled with encoder do no turn on

0210luis_barra · November 27, 2024, 6:58pm

I got a problem wit my esp32 and the next divices, oled display (128*32), rotary encoder, num pad 4x4, and relay module 5v when im trying to turn on the circuit with all connected the oled display didnt turn on, but when i disconnect the circuit and take off the encoder the oled turns on.

#include <Wire.h> 
#include <Adafruit_GFX.h>
#include <Adafruit_SSD1306.h>
#include <Keypad.h>
#include <WiFi.h>
#include <HTTPClient.h>
#include <ArduinoJson.h>

#define SCREEN_WIDTH 128
#define SCREEN_HEIGHT 32
#define OLED_RESET    -1

Adafruit_SSD1306 display(SCREEN_WIDTH, SCREEN_HEIGHT, &Wire, OLED_RESET);

// Credenciales de WiFi



// Configuración del teclado
const byte ROWS = 4; 
const byte COLS = 4; 
char keys[ROWS][COLS] = {
  {'1', '2', '3', 'A'},
  {'4', '5', '6', 'B'},
  {'7', '8', '9', 'C'},
  {'*', '0', '#', 'D'}
};

byte rowPins[ROWS] = {33, 25, 26, 27}; 
byte colPins[COLS] = {32, 14, 12, 13}; 

Keypad keypad = Keypad(makeKeymap(keys), rowPins, colPins, ROWS, COLS);

//const int outputPin = 2; 
const int clkPin = 0;   
const int dtPin = 4;    
const int swPin = 16;   
const int relayPin = 2;  // Pin para controlar el relé (relé conectado al pin 24)
unsigned long relayActivationTime = 0;  // Tiempo en el que se activó el relé
const unsigned long relayDuration = 5000;  // Duración del relé en milisegundos
bool relayActive = false;  // Estado del relé

volatile int pulseCount = 0; 
const int pulsesPerMeter = 100; 
float distance = 0.0; 
volatile bool buttonPressed = false;

volatile int lastCLK = LOW;

// Variable para almacenar el nombre del ESP32
String espName = "TMXSA01";  
int serienumber = 25322813; // número de serie de la máquina 

// Datos del usuario
String pieceNumber = "";
String workerNumber = "";

// Prototipos de funciones
void handleEncoder();
void handleButton();
void resetSystem();
void registerUser();
int sendData(String pieceNumber, String workerNumber);
String getInput();
void sendEncoderData();
void resetEncoder();
void relayOn();

bool userRegistered = false; // Variable para controlar el registro

void IRAM_ATTR handleEncoder() {
  int currentCLK = digitalRead(clkPin);
  if (currentCLK != lastCLK) {
    if (digitalRead(dtPin) != currentCLK) {
      pulseCount++; 
    } else {
      pulseCount--; 
    }
  }
  lastCLK = currentCLK; 
}

void IRAM_ATTR handleButton() {
  buttonPressed = true; 
}


void setup() {
  Serial.begin(115200);
  display.begin(SSD1306_SWITCHCAPVCC, 0x3C);
  display.clearDisplay();

  // Configuración del pin 24 como salida para controlar el relé
  pinMode(relayPin, OUTPUT);
  digitalWrite(relayPin, LOW);  // Inicialmente apagado

  // Pantalla de bienvenida
  display.setTextSize(1);
  display.setTextColor(SSD1306_WHITE);
  display.setCursor(0, 0);
  display.println("Bienvenido al");
  display.println("Sistema TEMSA");
  display.println("Maquina 019");
  display.display();
  delay(2000);
  display.clearDisplay();

  // Conectar a WiFi
  display.setCursor(0, 0);
  display.println("Conectando a WiFi...");
  display.display();
  WiFi.begin(ssid, password);

  int attempts = 0;
  while (WiFi.status() != WL_CONNECTED && attempts < 20) {
    delay(500);
    display.print(".");
    display.display();
    attempts++;
  }

  if (WiFi.status() != WL_CONNECTED) {
    display.clearDisplay();
    display.setCursor(0, 0);
    display.println("Fallo en la");
    display.println("conexion WiFi!");
    display.display();
    delay(3000);
    ESP.restart();
  } else {
    display.clearDisplay();
    display.setCursor(0, 0);
    display.println("Conectado!");
    display.print("IP: ");
    display.println(WiFi.localIP());
    display.display();
    delay(2000);
    display.clearDisplay();
  }

 // pinMode(outputPin, OUTPUT);
//  digitalWrite(outputPin, LOW);

  pinMode(clkPin, INPUT_PULLUP);
  pinMode(dtPin, INPUT_PULLUP);
  pinMode(swPin, INPUT_PULLUP);
  attachInterrupt(digitalPinToInterrupt(clkPin), handleEncoder, CHANGE);
  attachInterrupt(digitalPinToInterrupt(swPin), handleButton, FALLING);

  registerUser();
}

void loop() {
  

  if (userRegistered) {
    distance = pulseCount / (float)pulsesPerMeter;

    display.clearDisplay();
    display.setCursor(0, 0);
    display.print("Distancia: ");
    display.print(distance);
    display.println(" m");
    display.display();

    char key = keypad.getKey();
    if (key == '*') {
      resetSystem();
    } else if (key == 'D') {
      sendEncoderData();
      resetEncoder();
      ESP.restart();
    }
  }
}

void relayOn() {
  digitalWrite(relayPin, HIGH);  // Encender el relé
  relayActivationTime = millis();  // Registrar el tiempo de activación
  relayActive = true;  // Marcar el relé como activo
  Serial.println("rele activado");
  delay(2000);
}


void registerUser() {
  // Obtener número de pieza
  while (true) {
    display.clearDisplay();
    display.setCursor(0, 0);
    display.println("Num. de pieza:");
    display.display();

    pieceNumber = getInput();  
    if (pieceNumber.length() > 0) break; // Salir del bucle si se ingresa algo
  }

  // Obtener número de trabajador
  while (true) {
    display.clearDisplay();
    display.setCursor(0, 0);
    display.println("Num. de trabajador:");
    display.display();

    workerNumber = getInput();  
    if (workerNumber.length() > 0) break; // Salir del bucle si se ingresa algo
  }

  // Enviar datos
  int responseCode = sendData(pieceNumber, workerNumber);
  if (responseCode == 201) {
    userRegistered = true; // Establecer que el usuario está registrado
    display.clearDisplay();
    display.setCursor(0, 0);
    display.println("Registrado!");
    display.println("ESP32: " + espName);  
    display.println("Pieza: " + pieceNumber);  
    display.println("Trabajador: " + workerNumber);  
    
    relayOn();


    if (WiFi.status() == WL_CONNECTED) {
      display.println("Conectado!");
    }
    display.display();
    delay(2000);
  } else {
    display.clearDisplay();
    display.setCursor(0, 0);
    display.println("Error en los datos reiniciando sistema");
    display.display();
    delay(2000);
    ESP.restart();  // Reiniciar el ESP32
  }
}

int sendData(String pieceNumber, String workerNumber) {
  if (WiFi.status() == WL_CONNECTED) {
    HTTPClient http;
    http.begin("https");
    http.addHeader("Content-Type", "application/json");

    String jsonData = "{\"pieceNumber\":\"" + pieceNumber + "\",\"workerNumber\":\"" + workerNumber + "\",\"serienumber\":" + (serienumber) + "}";

    Serial.println("Enviando JSON: " + jsonData); // Imprimir el JSON

    // Agregar un pequeño retraso
    delay(1000);

    int httpResponseCode = http.POST(jsonData);
    String response = http.getString(); // Obtener respuesta
    Serial.println("Código de respuesta: " + String(httpResponseCode));
    Serial.println("Respuesta del servidor: " + response);


    // Verificar si la respuesta es -1 y reiniciar el sistema
    if (httpResponseCode == 200 && response == "-1") {
      Serial.println("Código de respuesta -1 recibido, reiniciando el sistema...");
      resetSystem(); // Reiniciar el sistema si la respuesta es -1
      ESP.restart();  // Reiniciar el ESP32
    }

    http.end();
    return httpResponseCode; // Retornar el código de respuesta
  } else {
    display.clearDisplay();
    display.setCursor(0, 0);
    display.println("Sin conexión");
    display.display();
    return 500; // Código de error para indicar falta de conexión
  }
}

String getInput() {
  String input = "";
  char key;
  while (true) {
    key = keypad.getKey();
    if (key) {
      if (key == '#') {
        break;
      } else {
        input += key;
        display.setCursor(0, 10);
        display.println(input);
        display.display();
      }
    }
  }
  return input;
}

void sendEncoderData() {
  // Aquí puedes construir el JSON para enviar la distancia
  String jsonData = "{\"pieceNumber\":\"" + pieceNumber + "\",\"workerNumber\":\"" + workerNumber + "\",\"serienumber\":" + String(serienumber) + ",\"distance\":" + String(distance) + "}";

  if (WiFi.status() == WL_CONNECTED) {
    HTTPClient http;
    http.begin("https"); // Cambia la URL según tu API
    http.addHeader("Content-Type", "application/json");

    int httpResponseCode = http.POST(jsonData);
    String response = http.getString();

    Serial.println("Código de respuesta: " + String(httpResponseCode));
    Serial.println("Respuesta del servidor: " + response); 


    http.end();
  } else {
    Serial.println("Error: Sin conexión a WiFi");
    display.clearDisplay();
    display.setCursor(0, 0);
    display.println("Error: Sin conexión");
    display.display();
    delay(2000);
  }
}

void resetEncoder() {
  pulseCount = 0; 
  distance = 0.0; 
  lastCLK = LOW;
}

void resetSystem() {
  display.clearDisplay();
  display.setCursor(0, 0);
  display.println("Reiniciando...");
  display.display();
  delay(1000);
  
  pulseCount = 0; 
  distance = 0.0; 
  buttonPressed = false; 
  lastCLK = LOW; 
  userRegistered = false; // Reiniciar el estado de registro
  
  display.clearDisplay();
  display.setCursor(0, 0);
  display.println("");
  display.display();
  delay(2000); 
  display.clearDisplay();
}

Railroader · November 27, 2024, 7:16pm

Please post schematics and code here. Links are not the way forum requests.

xfpd · November 27, 2024, 7:22pm

Your wiring and power supply are not good. Correct them.

0210luis_barra · November 28, 2024, 1:27pm

sorry for the question but how can i upload those things here.
Trough a photo? of the schematics?

0210luis_barra · November 28, 2024, 1:27pm

i also checked that thx

xfpd · November 28, 2024, 1:35pm

After creating the schematic, click the "upload file" icon in your message box.

Railroader · November 28, 2024, 1:39pm

Pen, paper, foto and upload, yes.

0210luis_barra · November 28, 2024, 1:42pm

I already post thx

xfpd · November 28, 2024, 1:50pm

You need to show pin numbers of the pins being used on every device.

Railroader · November 28, 2024, 1:56pm

Fritzing type pictures are not appreciated as too much is missing, circuit pin numbers unreadable, missing power supplies etc.

runaway_pancake · November 28, 2024, 1:57pm

It's probably tanking more than the OLED.

Lots of 5V stuff wired to 3V I/O.

system · May 27, 2025, 1:57pm

This topic was automatically closed 180 days after the last reply. New replies are no longer allowed.

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Oled with encoder do no turn on

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