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ESP32 WiFi Status Display on OLED

Overview

This project demonstrates how to connect an ESP32 to a WiFi network and display the connection status along with the assigned IP address on an SSD1306 OLED display.

The project is simulated using Wokwi and can also be deployed on a physical ESP32 board.

Features

  • Connects ESP32 to a WiFi network
  • Displays connection progress on the OLED screen
  • Shows WiFi connection status
  • Displays the assigned IP address
  • Prints connection details to the Serial Monitor
  • Compatible with Wokwi simulation

Components Required

Component Quantity
ESP32 DevKit V1 1
SSD1306 OLED Display (128x64, I2C) 1
Jumper Wires As Required

🔗 Simulation Link

👉 Open Simulation

🔌 Circuit Diagram

View Circuit Diagram

Circuit Connections

OLED Pin ESP32 Pin
VCC 3.3V
GND GND
SDA GPIO 21
SCL GPIO 22

Libraries Used

  • WiFi.h
  • Wire.h
  • Adafruit GFX Library
  • Adafruit SSD1306 Library

How It Works

  1. The ESP32 initializes the OLED display.
  2. A "Connecting WiFi..." message is shown.
  3. The ESP32 attempts to connect to the configured WiFi network.
  4. Once connected:
    • The OLED displays "WiFi Connected".
    • The assigned IP address is shown.
    • The same information is printed to the Serial Monitor.

Example Output

OLED Display:

WiFi Connected

IP:
192.168.1.100

Serial Monitor:

WiFi Connected
192.168.1.100

Wokwi Simulation

This project can be simulated using Wokwi.

  1. Create a new ESP32 project in Wokwi.
  2. Add an SSD1306 OLED display.
  3. Connect the OLED according to the circuit table above.
  4. Upload the code.
  5. Run the simulation.

Applications

  • IoT device status monitoring
  • Network connectivity indication
  • Smart home projects
  • ESP32 learning and experimentation
  • OLED display interfacing practice

👨‍💻 Author

Kritish