Description
What it is
The TTGO T-Energy T18 is an ESP32 WROVER module with integrated Wi-Fi and Bluetooth, featuring an 18650 battery holder. It is designed for the development of autonomous electronic prototypes with wireless connectivity.
Features
- ESP32 WROVER module
- Integrated Wi-Fi
- Integrated Bluetooth
- 18650 battery holder
What it is for
The TTGO T-Energy T18 is ideal for IoT projects that require energy autonomy and wireless connectivity. Examples of use include temperature sensors that transmit data via Wi-Fi to online platforms or autonomous devices that communicate via Bluetooth.
Tutorial: How to use TTGO T-Energy T18 Wi-Fi and Bluetooth ESP32 WROVER module with 18650 battery holder
The TTGO T-Energy T18 is a Wi-Fi and Bluetooth module based on ESP32 WROVER that includes an 18650 battery holder. It is ideal for IoT projects that require energy autonomy and wireless connectivity.
What you need
- Arduino IDE
- USB Type A to micro USB cable
- 18650 battery
- Wi-Fi connection
Steps
- Install the Arduino IDE and add the ESP32 library.
- Connect the TTGO T-Energy T18 module to the computer via the USB cable.
- Check the module’s connectivity with the Arduino IDE.
- Load a sample sketch to test the Wi-Fi and Bluetooth functionality.
- Refer to the datasheet to configure the battery 18650 power supply.
- Test the automatic battery charging function.
- Configure the module to connect to a Wi-Fi network.
- Experiment with Bluetooth features for wireless communication.
Example code
void setup() {
Serial.begin(115200);
WiFi.begin("SSID", "PASSWORD");
while (WiFi.status() != WL_CONNECTED) {
delay(500);
Serial.print(".");
}
Serial.println("nConnesso a Wi-Fi");
}
Mini project
Create a temperature sensor that sends data via Wi-Fi to an online platform.
Common mistakes
- Wi-Fi connectivity issues
- Battery charging issues
- Incorrect ESP32 module settings
- Power supply issues
Recommended accessories
- 18650 battery
- 18650 battery charger
- Temperature sensors
- OLED Display
Frequently asked questions
How can I charge the battery?
Check the datasheet for the battery charging procedure of 18650.
Which libraries are required?
ESP32 and WiFiClient are the main libraries required.
Can it connect to multiple Wi-Fi networks?
Check the datasheet for the multi-Wi-Fi configuration.






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