Esp8266_ssd1306_Weather station

Click see detail SSD1306 คลิ้กดูรายละเอียด SSD1306

Click for detail ESP8266 คลิ้กดูรายละเอียด ESP8266

Wiring

ESP8266 Access point scanner Show LCD

#include <Wire.h>
#include <LiquidCrystal_I2C.h>

// Set the LCD address to 0x27 for a 16 chars and 2 line display
LiquidCrystal_I2C lcd(0x27, 16, 2);




#include "ESP8266WiFi.h"

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

  // Set WiFi to station mode and disconnect from an AP if it was previously connected
  WiFi.mode(WIFI_STA);
  WiFi.disconnect();
  delay(100);

  Serial.println("Setup done");

  // initialize the LCD
  lcd.begin();
}

void loop() {
  Serial.println("scan start");

  // WiFi.scanNetworks will return the number of networks found
  int n = WiFi.scanNetworks();
  Serial.println("scan done");
  if (n == 0)
    Serial.println("no networks found");
  else
  {
    Serial.print(n);
    Serial.println(" networks found");
    for (int i = 0; i < n; ++i)
    {
      // Print SSID and RSSI for each network found
      Serial.print(i + 1);
      Serial.print(": ");
      Serial.print(WiFi.SSID(i));
      Serial.print(" (");
      Serial.print(WiFi.RSSI(i));
      Serial.print(")");
      Serial.println((WiFi.encryptionType(i) == ENC_TYPE_NONE)?" ":"*");
      delay(1000);

// LCD

      lcd.setCursor(0,0);
      lcd.print(i + 1);
      lcd.setCursor(0,1);
      lcd.print(WiFi.SSID(i));
     
     
    }
  }
  Serial.println("");

  // Wait a bit before scanning again
  delay(5000);
}

ESP8266 NODE MCU connect I2C LCD

Wiring

I2C LCD  to ESP8266 Node MCU

GND to GND

VCC to VU

SDA to D2

SCL to D1

use example code from IDE


#include <Wire.h> 
#include <LiquidCrystal_I2C.h>

// Set the LCD address to 0x27 for a 16 chars and 2 line display
LiquidCrystal_I2C lcd(0x27, 16, 2);

void setup()
{
// initialize the LCD
lcd.begin();
}

void loop()
{
bool blinking = true;
lcd.cursor();

while (1) {
if (blinking) {
lcd.clear();
lcd.print("No cursor blink");
lcd.noBlink();
blinking = false;
} else {
lcd.clear();
lcd.print("Cursor blink");
lcd.blink();
blinking = true;
}
delay(4000);
}

}