ESP32-S3 rotary encoder features 1.2-inch AMOLED touchscreen display and Qwiic connectors

LILYGO T-Encoder-Pro is a rotary encoder based on Espressif Systems ESP32-S3 WiFi and Bluetooth SoC, equipped with a 1.2-inch AMOLED with touchscreen support, and two Qwiic connectors for expansion.

LILIGO T-Encoder was introduced in 2022 with ESP32 WiFi and Bluetooth SoC and a few GPIOs that enabled it to be fitted on a 2-key keypad shield. The LILYGO T-Encoder Pro has a completely different design with a more advanced ESP32-S3 SoC, an integrated touchscreen display, and GPIOs are now exposed through Qwiic connectors instead of headers.

LILYGO T-Encoder-Pro specifications:

• Wireless SoC – Espressif Systems ESP32-S3R8
  • CPU – Dual-core Tensilica LX7 @ up to 240 MHz with vector instructions for AI acceleration
  • Memory – 512KB RAM, 8MB PSRAM
  • Wireless – 2.4 GHz WiFi 4 and Bluetooth
• Storage – 16 MB flash (W25Q128)
• Display – 1.2-inch rounded AMOLED with ∅390mm resolution via SH8601A-W14-T06 QSPI controllers; CHSC5816 I2C touch and rotary encoder chip
• USB – 1x USB Type-C for power and programming
• Encoder – Left/right rotary encoder
• Expansion – 2x Qwiic connectors (1x 3.3V I2C, 1x 5V UART)
• Misc – Buzzer (connected to IO17), user button (IO0), 3x mounting threads
• Power Supply – 5V/500mA via USB-C port
• Dimensions – 43.5 x 43.5 x 27.5mm

The T-Encoder Pro supports PlatformIO/Arduino programming using the Arduino_GFX library for the AMOLED driver, SensorLib for the CHSC5816 touchscreen controller, and the LVGL library for UI design. You’ll find PDF schematics, datasheet, basic instructions to get started, and Arduino sketches for the main features (touchscreen, display, encoder, and LVGL-based test program) on GitHub.

LILYGO sells the T-Encoder Pro ESP32-S3 rotary encode on Aliexpress for $38.98 including shipping, andon Amazon for $38. It’s not quite the first ESP32-S3-based rotary encoder with integrated display we’ve covered on CNX Software as we wrote about the M5Stack Dial last year, and Kumpee reviewed the MaTouch ESP32-S3 Rotary IPS Display with a larger 2.1-inch display a few months. Another similar product is the RoenDi rotary encoder with an STM32 microcontroller and a 1.28-inch color display.

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