1. Киришүү
The LILYGO® TTGO T-OI Plus is a compact and versatile development board featuring the ESP32-C3 RISC-V microcontroller. Designed for Internet of Things (IoT) projects, it integrates Wi-Fi and Bluetooth 5 (BLE) connectivity, offering a secure, low-power, and cost-effective solution for various applications. This manual provides essential information for setting up, operating, and maintaining your T-OI Plus board.
The T-OI Plus builds upon the design of the T-OI ESP8266 version, offering enhanced performance and features. It is compatible with Grove series interface modules and MINI D1 Expansion Shields, providing flexibility for various project needs. The board is available with or without a built-in 16340 battery holder, allowing for both portable and fixed installations.
2. Техникалык шарттар
The following table details the technical specifications of the LILYGO® TTGO T-OI Plus development board:
| Өзгөчөлүк | Description |
|---|---|
| Продукт | T-OI Plus |
| MCU | ESP32-C3 (RISC-V 32-bit Microprocessor) |
| CPU Details | 400 KB of SRAM, 384 KB of ROM, 8 KB SRAM in RTC |
| Саат ылдамдыгы | 160 МГц |
| FLASH | 4 Мбайт |
| Батарея кармагыч | With/Without 16340 Battery Holder |
| Grove Connectors | 4 Pin, 2.0mm |
| Аналогдук интерфейстер | 2 × 12-bit SAR ADCs, up to 6 channels |
| Digital Interfaces | 3 × SPI, 2 × UART, 1 × I2C, 1 × I2S, LED PWM, TWAI, Timers, RMT, Full-speed USB Serial |
| Wi-Fi | IEEE 802.11 b/g/n-compliant, Supports Station, SoftAP, SoftAP + Station mode |
| Bluetooth | Bluetooth 5, Bluetooth тор |
| Өлчөмдөрү (WxHxD) | 44*20*25.5мм |
| Салмагы | 28г |
| Пакет | Ооба |
3. Продукт бүтүп калдыview and Pin Diagram
Understanding the pinout and components is crucial for effective use of the T-OI Plus board. The following diagram illustrates the pin assignments and key features:
Key components and their functions:
- ESP32-C3 Module: The main microcontroller with Wi-Fi and Bluetooth capabilities.
- GPIO Pins: General Purpose Input/Output pins for connecting sensors, actuators, and other peripherals.
- Power Pins: 3V3, 5V, and GND for power supply.
- Grove Pin: Dedicated 4-pin connector for Grove modules (SCL, SDA, 3V3 Power, Ground).
- Кубат которгучу: Resets the ESP32-C3 microcontroller.
- Калыбына келтирүү баскычы: Resets the ESP32-C3 microcontroller.
- Controllable LED: An onboard LED that can be programmed.
- Заряддоо көрсөткүчү: Indicates the charging status of the 16340 battery (if installed).
- USB-C порту: For power supply and data communication (programming).
4. Орнотуу
The LILYGO® TTGO T-OI Plus can be set up in two main configurations: with a 16340 battery or powered via USB.
4.1. With 16340 Battery Holder
- Батарея салыңыз: If your board includes a 16340 battery holder, carefully insert a 3.7V 16340 Li-ion battery into the holder, ensuring correct polarity (+ and - terminals). The battery dimensions are approximately 34mm length and 16mm diameter.
- Күйгүзүү/өчүрүү: Use the onboard power switch to turn the device on or off. Push the switch up to turn on (green LED may illuminate), and down to turn off.
- Заряддоо: The board supports charging of the 16340 battery via the USB-C port. A charging indicator LED will show the charging status.
4.2. Without Battery Holder
- Connect to USB Power: If your board does not include a battery holder, connect it to a USB power supply using a USB-C cable. The board can be used directly with a breadboard for prototyping without soldering.
- Breadboard Usage: Insert the board into a breadboard, ensuring proper alignment of the pins. Use jumper wires to connect to other components as needed.
5. Иштөө нускамалары
The LILYGO® TTGO T-OI Plus is a development board, meaning its operation largely depends on the code uploaded to it. Here are general guidelines and examples:
5.1. Programming the Board
To program the T-OI Plus, you will typically use the Arduino IDE or ESP-IDF framework. Connect the board to your computer via the USB-C port. Ensure you have the correct board definitions and drivers installed.
5.2. Using Wi-Fi and Bluetooth
The ESP32-C3 supports Wi-Fi (802.11 b/g/n) and Bluetooth 5 (BLE). You can develop applications that utilize these features for network connectivity, data transfer, and communication with other Bluetooth devices.
5.3. Interfacing with Peripherals
The board provides various GPIO pins and dedicated interfaces (SPI, UART, I2C, I2S, etc.) for connecting external sensors, displays, and other modules. Refer to the Pinmap (Figure 5) for specific pin functions.
5.4. Чыгample: Using with RGB Light (WS2812)
The video demonstrates connecting an RGB light (WS2812) to the T-OI Plus. This typically involves connecting the data pin of the RGB light to a suitable GPIO pin on the T-OI Plus, and providing power. The board's power switch can then be used to activate the circuit, and a DIP switch on the RGB module (if present) can control its state.
6. Техникалык тейлөө
- Кургак кармоо: Avoid exposing the board to moisture or liquids.
- Этияттык менен мамиле кылуу: Electronic components are sensitive. Avoid dropping or applying excessive force to the board.
- Тазалык: Keep the board free from dust and debris. Use a soft, dry brush or compressed air for cleaning.
- Батареяга кам көрүү (эгер бар болсо): If using a 16340 battery, ensure it is charged regularly and stored in a cool, dry place when not in use. Do not overcharge or deep discharge the battery.
7. Кыйынчылыктарды
- Плата күйбөй жатат:
- If using a battery, ensure it is correctly inserted and charged. Check the power switch position.
- If using USB, ensure the USB-C cable is securely connected to a working power source. - Программалоо каталары:
- Verify that the correct board (ESP32-C3) and port are selected in your IDE.
- Ensure all necessary drivers are installed.
- Check your code for syntax errors or logical issues. - Wi-Fi/Bluetooth туташуу маселелери:
- Double-check your network credentials (SSID, password).
- Ensure the device is within range of the Wi-Fi access point or Bluetooth device.
- Verify that your code correctly initializes and uses the Wi-Fi/Bluetooth modules. - Перифериялык жооп бербейт:
- Check wiring connections to ensure they are secure and correct according to the pinout diagram.
- Verify that the peripheral itself is functional and correctly configured in your code.
8. Колдонуучунун кеңештери
- Grove Connector Type: The Grove connector on the T-OI Plus is a 4-pin, 2.0mm type, compatible with standard Grove modules.
- Акселерометр: The T-OI Plus does not have a built-in accelerometer. If your project requires one, an external Grove-compatible accelerometer module can be connected.
- Deep Sleep Power Consumption: When operating in deep sleep mode with an attached battery, be aware that additional components like the USB/serial converter may still draw a small amount of current. For ultra-low power applications, consider optimizing your circuit design to minimize quiescent current draw from all components.
- Коомчулукту колдоо: For advanced programming questions or project ideas, refer to the official LILYGO GitHub repository and community forums.
9. Кепилдик жана колдоо
For technical support, documentation, and warranty information, please refer to the official LILYGO® website or their GitHub repository. The manufacturer provides resources for developers and users to ensure successful project implementation.
- GitHub Repository: https://github.com/Xinyuan-LilyGO/LilyGo-T-OI-PLUS
