Wemos TTGO ESP32 WOORM Wi-Fi Bluetooth + OLED Screen 0.96 inches with 18650 Battery Slot

Description

What it is

The Wemos TTGO ESP32 WOORM is an integrated module that combines Wi-Fi and Bluetooth functionality with a 0.96 inch OLED screen and an 18650 battery slot, ideal for Arduino and Internet of Things (IoT) projects.

Features

• Integrated Wi-Fi + Bluetooth module
• 0.96 inch liquid crystal OLED screen
• 18650 battery slot for portable power

What it is for

Ideal for real-time monitoring projects, such as home monitoring systems that send temperature and humidity data to a cloud platform. Compatible with Arduino and ESP.

Tutorial: How to use Wemos TTGO ESP32 WOORM with OLED Screen

The Wemos TTGO ESP32 is a versatile module that combines Wi-Fi, Bluetooth, and an OLED screen. Ideal for IoT and real-time monitoring projects.

What you need

• Arduino IDE
• Computer or laptop
• USB A-micro B cable
• 18650 battery (optional)
• Wi-Fi configuration software

Steps

1. Install the Arduino development environment and add the ESP32 library.
2. Connect the Wemos TTGO module to the computer via USB.
3. Open a new sketch in Arduino IDE and import the necessary libraries to manage Wi-Fi, Bluetooth, and OLED.
4. Configure the OLED expansion pins in the code.
5. Write a simple instruction to turn on the OLED display and display a welcome message.
6. Test the Wi-Fi connection and send data to a web server or mobile app.
7. If available, insert an 18650 battery into the module for external power.
8. Monitor the device activity through the OLED display.

Example code

// Includi le librerie necessarie
#include <Wire.h>
#include <Adafruit_SSD1306.h>

// Definisci i pin dell'OLED
#define SCREEN_WIDTH 128
#define SCREEN_HEIGHT 64
#define OLED_RESET     -1
#define SCREEN_ADDRESS 0x3C

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

void setup() {
  Serial.begin(115200);
  if(!display.begin(SSD1306_SWITCHCAPVCC, SCREEN_ADDRESS)) {
    Serial.println(F("Errore durante l'inizializzazione del display."));
    while(true);
  }
}

void loop() {
  // Codice per la visualizzazione dei dati sul display OLED
}

Mini project

Create a home monitoring system that sends temperature and humidity to a cloud platform using the integrated Wi-Fi.

Common mistakes

• Error during ESP32 library installation.
• Problems with Wi-Fi or Bluetooth connection.
• OLED display does not respond correctly.
• 18650 battery not recognized by the module.

Recommended accessories

• USB A-micro B cable
• Temperature and humidity sensors DHT22
• Cloud platform for data transmission
• 18650 battery

Frequently asked questions

What is the difference between ESP32 and ESP8266?
ESP32 has more CPU cores, Bluetooth LE support, and audio control features.

How can I upload the firmware to the module without a computer?
Use a USB bootloader or an SD card for code upload.