The LILYGO T-Circle is a powerful and compact round-screen development board designed for wearable devices, HMI interfaces, and IoT projects. It features a 0.75-inch 160160 TFT LCD with capacitive touch, built-in APA102 RGB LED, and supports USB charging. Two versions are available: the T-Circle S3 based on the advanced ESP32-S3R8 with enhanced peripherals, and the T-Circle Classic, ideal for basic visual applications.

Available Versions

1. T-Circle S3 Version

• MCU: ESP32-S3R8 Dual-core LX7

• Wireless: 2.4 GHz Wi-Fi and Bluetooth 5 (LE)

• Flash: 16MB

• PSRAM: 8MB

• Display: 0.75-inch TFT LCD, 160160 resolution, GC9D01N driver

• Touch: Capacitive (CST816D)

• Audio: I2S MEMS microphone (MSM261) and MAX98357A Class-D amplifier

• LED: RGB LED (APA102)

• Power: USB-C 5V/500mA charging

• Size: 32 17 mm

Best For: Voice interface projects, wearable displays, smart assistants

2.T-Circle Classic Version

• Display: 0.75-inch TFT LCD, 160160, GC9D01N driver

• Touch Control: Capacitive touch (CST816D)

• MCU: ESP32 (classic)

• Basic GPIO pinout

• No built-in audio or amplifier modules

• Compact size with USB charging

Best For: Visual interface development, UI prototyping

Key Features

• 0.75-inch round TFT LCD with 262K color and SPI interface

• GC9D01N display driver IC

• CST816D capacitive touch controller

• Fully compatible with Arduino, PlatformIO, and ESP-IDF

• Integrated APA102 RGB LED for visual feedback

• Expandable via Qwiic/STEMMA QT interface

• USB Type-C port for charging and communication

Application Scenarios

• Wearable device development

• Touch-based UI display projects

• Smart home control panels

• Voice-interactive IoT terminals

• Educational and embedded GUI demos

References

Product Information
Technical support