The LILYGO® T-Lion is a compact, feature-rich development board based on the ESP32-WROVER SoC. With 4MB Flash, 8MB PSRAM, 0.96" OLED display, integrated Wi-Fi and Bluetooth, and 18650 battery support, it's ideal for IoT, smart sensors, and portable embedded systems.
Key Features
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ESP32-WROVER chipset with dual-core processor and low-power design
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4MB QSPI Flash and 8MB PSRAM for memory-intensive applications
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Integrated 0.96-inch OLED (SSD1306) display
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Built-in Wi-Fi (802.11 b/g/n/e/i) and Bluetooth v4.2 BR/EDR + BLE
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Five-way joystick buttons (OK, UP, DOWN, LEFT, RIGHT)
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Reset and Boot buttons
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Battery switch and 18650 battery holder
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CH9102 USB to TTL for programming
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Modular I/O: UART, SPI, I2C, I2S, SDIO, PWM, ADC, DAC, IR, LED/TV PWM
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Power LED indicator
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Operating voltage: 2.3V–3.6V
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Charging via USB 5V/1A, 1000mA current
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Sleep current: 470uA, ideal for battery-powered applications
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Operating temperature: -40°C to +85°C
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Dimensions: 108.51mm × 29.01mm
Pin Diagram (TTGO-T18 V2.2)
This board offers a wide range of I/O pins, clearly labeled in the pinout diagram below for quick development. Notable assignments:
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SSD1306 Display (I2C):
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SDA: GPIO21
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SCL: GPIO22
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Button GPIO Mapping:
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GND
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GPIO36
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GPIO39
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GPIO33
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GPIO34
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GPIO32
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Refer to the diagram for full GPIO availability, ADC/TCH pins, UART ports, and power rails.
Wireless Connectivity
Wi-Fi
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Certified: FCC, CE, TELEC, KCC, SRRC, NCC
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Protocols: 802.11 b/g/n/e/i (up to 150 Mbps, A-MPDU, A-MSDU)
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Frequency: 2.4–2.5GHz
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Protection interval: 0.4 μs
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Transmission power: 22 dBm
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Range: Up to 300 meters
Bluetooth
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Standard: Bluetooth v4.2 BR/EDR + BLE
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Receiver Sensitivity: -98 dBm
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Audio support: CVSD/SBC
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Supports AFH, Class 1–3 emitters
Software Features
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Wi-Fi Modes: Station / SoftAP / Station+SoftAP / P2P
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Security: WPA, WPA2, WPA2-Enterprise, WPS
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Encryption: AES, RSA, ECC, SHA
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Firmware upgrade: via UART or OTA
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Protocol support: IPv4, IPv6, TCP/UDP, HTTP, FTP, MQTT, SSL
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Development: SDK and cloud support available
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Configuration: AT commands + mobile/cloud app support
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OS: FreeRTOS
Applications
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Battery-powered IoT terminals
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Smart sensing and logging systems
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Environmental monitoring
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Wireless display and control units
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Portable embedded development platforms
Includes
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1 × LILYGO® T-Lion ESP32-WROVER Board
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1 × 18650 Battery Holder (attached or included)
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1 × USB to TTL (CH9102 interface)
Reference
T-Lion / T-Controller