LILYGO released another ESP32-S3 development board. The T7-S3 is equipped with an ESP32-S3-WROOM-1 module with 16MB flash memory, 8MB PSRAM and a PCB antenna.

The board is relatively compact at 3.9 × 3.1 cm, can be powered via a USB-C port or a LiPo battery with charging support, and offers 40 vias plus a Qwicc/QT I2C connector for expansion.

Specifications of LILYGO T7-S3:

  • Wireless module – ESP32-S3-WROOM-1-N16R8 module with
    • SoC – Espressif Systems ESP32-S3 Dual-Core Xtensa LX7 @ up to 240 MHz AI Acceleration Vector Instruction Integration, 512 KB SRAM, WiFi 4 & Bluetooth 5.0 LE & Mesh Connectivity
    • Memory – 8MB PSRAM
    • Storage – 16MB SPI Flash
  • USB – USB Type-C port
  • Expansion
    • 2x 20-pin connectors with up to 29x GPIO, 20x ADC, UART, SPI, touch interface, 5V, 3.3V and GND
    • 4-pin Qwiic/QT I2C connector
  • Miscellaneous – User LED, Charge LED (blue), Reset and Charge buttons, On/Off switch
  • Power supply
    • 5V via USB-C port
    • 2-pin JST connector for LiPo battery with charging support
  • Dimensions – 3.9 x 3.1 x 0.6 cm

LILYGO T7-S3 Pin Diagram

The company provides very basic instructions to get you started with PlatformIO, the Arduino IDE and MicroPython, and two simple Arduino sketches, one to enter deep sleep and the other to continuously read the battery voltage and turn a user LED on and off when a button is pressed.

They also show 34.64uA power consumption in deep sleep mode with the battery connected (so about 3.7 to 4.2V), demonstrating the ESP32-S3’s low power consumption. Not too bad I suppose, but other ESP32-S3 boards have been shown to consume even less and for example the Unexpected Maker TinyS3 has been measured at 27.29 uA at 4.2 V using Nordic Semi’s Power Profiler Kit II to measure.

LILYGO is currently selling the T7-S3 for $11.98 with free shippingbut since the Aliexpress 11.11 event starts in about 2 days, the board will only be available for $9.58 during the event, provided it is still in stock during the promotion…

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LILYGO T7-S3 ESP32-S3 board with 16MB flash, 8MB PSRAM, LiPo battery support sells for under $10 (Promo)

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