Display lcd oled i2c + tm1637 now work

Using Arduino Programming Questions
1

I tried combining an Oled LCD and a TM1637. The code cannot display the display on the LCD. Where did it go wrong?

#include <ESP8266WiFi.h>
#include <ESPAsyncWebServer.h>
#include <Wire.h>
#include <Adafruit_SSD1306.h>
#include <Adafruit_GFX.h>
#include <TM1637Display.h>
#include <TimeLib.h>
#include <FS.h>

#define SCREEN_WIDTH 128 // OLED display width, in pixels
#define SCREEN_HEIGHT 64 // OLED display height, in pixels

// Declaration for an SSD1306 display connected to I2C (SDA, SCL pins)
#define OLED_RESET -1 // Reset pin # (or -1 if sharing Arduino reset pin)
Adafruit_SSD1306 display(SCREEN_WIDTH, SCREEN_HEIGHT, &Wire, OLED_RESET);

// Define the connections pins
#define CLK D6
#define DIO D5

// Create a display object of type TM1637Display
TM1637Display displayled = TM1637Display(CLK, DIO);

// Create an array that turns all segments ON
const uint8_t allON[] = {0xff, 0xff, 0xff, 0xff};

// Create an array that turns all segments OFF
const uint8_t allOFF[] = {0x00, 0x00, 0x00, 0x00};

unsigned long clockMillis = 0;
unsigned long interval = 1000;

unsigned long sensorMillis1 = 0;
const long sensorInterval1 = 1000;

// Initialize Web Server on port 80
AsyncWebServer server(80);

// Function to handle GET request to /getnow
void handleGetNow(AsyncWebServerRequest *request) {
  if (request->hasParam("hour") && request->hasParam("minute")) {
    int h = request->getParam("hour")->value().toInt();
    int m = request->getParam("minute")->value().toInt();
    setTime(h, m, 0, day(), month(), year());

    // Display time on TM1637
    displayTime(h, m);
  }
  request->send(200, "text/plain", "Time updated");
}

// Function to display time on TM1637
void displayTime(int hour, int minute) {
  int displayTime = hour * 100 + minute;
  displayled.showNumberDecEx(displayTime, 0b01000000, true, 4, 0);
}

void setup() {
  Serial.begin(115200);

  // Setup WiFi as Access Point
  WiFi.softAP("ESP8266_Time_Setter");
  
  // Initialize SPIFFS
  if (!SPIFFS.begin()) {
    Serial.println("An Error has occurred while mounting SPIFFS");
    return;
  }

  if(!display.begin(SSD1306_SWITCHCAPVCC, 0x3C)) { // Address 0x3C for 128x32
    Serial.println(F("SSD1306 allocation failed"));
    for(;;); // Don't proceed, loop forever
  }

  // Set the brightness to 7 (0=dimmest 7=brightest)
  displayled.setBrightness(7);

  // Set all segments ON
  displayled.setSegments(allON);

  displayled.clear();

  display.fillRect(0, 0, SCREEN_WIDTH, SCREEN_HEIGHT, BLACK);
  display.display();

  // Initialize time to 00:00:00
  setTime(0, 0, 0, 1, 1, 1970); 

  // Serve static files
  server.serveStatic("/", SPIFFS, "/").setDefaultFile("index.html");
  server.on("/getnow", HTTP_GET, handleGetNow);

  server.begin();
  Serial.println("HTTP server started");
}

const unsigned char epd_bitmap_temperature [] PROGMEM = {
    0xff, 0xf8, 0xf8, 0xf8, 0xf2, 0x78, 0xf7, 0x78, 0xf5, 0x78, 0xf5, 0x78, 0xf5, 0x78, 0xe8, 0xb8, 
    0xe8, 0xb8, 0xe8, 0xb8, 0xf7, 0x78, 0xfd, 0xf8, 0xff, 0xf8
};
const unsigned char epd_bitmap_barometer [] PROGMEM = {
    0xff, 0xf8, 0xf0, 0x78, 0xe0, 0x38, 0xe7, 0x38, 0xc2, 0x18, 0xc2, 0x18, 0xe0, 0x38, 0xe0, 0x38, 
    0xf8, 0xf8, 0xf8, 0xf8, 0x80, 0x08, 0x80, 0x08, 0xff, 0xf8
};
const unsigned char epd_bitmap_height [] PROGMEM = {
    0xff, 0xf8, 0xfd, 0xf8, 0xf8, 0xf8, 0xfd, 0xf8, 0xfd, 0xf8, 0xfd, 0xf8, 0xfd, 0xf8, 0xfd, 0xf8, 
    0xfd, 0xf8, 0xfd, 0xf8, 0xf8, 0xf8, 0xfd, 0xf8, 0xff, 0xf8
};

void loop() {
  if (millis() - clockMillis >= interval) {
    clockMillis = millis();

    if (timeStatus() == timeNotSet) {
      // Manually increment time by one second if time has not been set
      adjustTime(1);
    }

    int h = hour();
    int m = minute();
    displayTime(h, m);
  }
  
  display.setTextSize(1);
  display.setTextColor(WHITE);
  String displayHeader = "PORTABLE WEATHER";
  int16_t x1, y1;
  uint16_t w, h;
  display.getTextBounds(displayHeader, 0, 0, &x1, &y1, &w, &h);
  display.setCursor((SCREEN_WIDTH - w) / 2, 0); // Center the text
  display.println(displayHeader);
  display.display();

  if(millis() - sensorMillis1 >= sensorInterval1) {
    sensorMillis1 = millis();

    // Hapus hanya area sensor dari layar
    display.fillRect(0, 16, SCREEN_WIDTH, SCREEN_HEIGHT - 16, BLACK);

    display.setTextSize(1);
    display.setTextColor(WHITE);

    display.drawBitmap(0, 16, epd_bitmap_temperature, 13, 13, 1);
    display.setCursor(20, 18);
    display.print("50");
    display.println(" *C");

    display.drawBitmap(0, 32, epd_bitmap_barometer, 13, 13, 1);
    display.setCursor(20, 34);
    display.print("50");
    display.println(" hPa");

    display.drawBitmap(0, 48, epd_bitmap_height, 13, 13, 1);
    display.setCursor(20, 50);
    display.print("50");
    display.println(" m");

    display.display(); // Show data
  }
}
2

Please, post the pictures of your OLED Display and TM1637 Display. Also, mention the Arduino (UNO or NANO or else) you are using.

3

WEMOS D1 MINI

  1. The Oled LCD won't work when I connect the TM1637
  2. OLed LCD works successfully then I press get now on the and Oled LCD website nothing appears even though the clock on the TM1637 changes
    20240703_152641
    20240703_1526411920×2560 115 KB
<!DOCTYPE html>
<html>
<head>
  <title>ESP8266 Time Setter</title>
  <script>
    function getCurrentTime() {
      const now = new Date();
      const hour = now.getHours();
      const minute = now.getMinutes();
      const xhttp = new XMLHttpRequest();
      xhttp.open('GET', `/getnow?hour=${hour}&minute=${minute}`, true);
      xhttp.send();
    }
  </script>
</head>
<body>
  <h1>Get Current Time</h1>
  <button onclick="getCurrentTime()">Get Now</button>
</body>
</html>
4

Thanks for the reply. I don't have WEMOS D1 MINI; so, I can't help in trouble shooting/debugging.

5

don't you have an esp32 too or another esp8266?