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Version: 2.8

LILYGO® T-Watch

The T-Watch is a wearable Meshtastic node with a touch screen, haptic feedback, a speaker and microphone, and a three-axis accelerometer.

Both boards share one firmware build and one hardware model. The Plus adds a GNSSGNSS (Global Navigation Satellite System). A multi-constellation satellite positioning receiver. Hardware listing GNSS support typically receives GPS, BeiDou, GLONASS and QZSS. receiver, a user button, and a larger battery.

T-Watch S3 Plus

LILYGO T-Watch S3

The T-Watch S3 Plus adds a GNSS receiver and a user button to the T-Watch S3, and carries a 940 mAh battery.

Specifications

  • MCU
    • ESP32-S3 (Wi-Fi & Bluetooth 5 LE)
      • 16 MB flash, 8 MB PSRAM
  • LoRa Transceiver
    • Semtech SX1262
  • Frequency options
    • 433 MHz
    • 868 MHz
    • 915 MHz
    • 920 MHz
  • Navigation Module
    • GNSS receiver
  • Display
    • ST7789 TFT LCD, 240 x 240, touch
  • Battery Capacity
    • 940 mAh
  • Antenna
    • U.FL/IPEX antenna connector for LoRa

Features

  • DRV2605 haptic driver.
  • I2S speaker and microphone with MAX98357A amplifier.
  • AXP2101 power management.
  • BMA423 three-axis accelerometer.
  • Real-time clock.
  • User button, which the T-Watch S3 does not have.

Flashing

To flash ESP32-S3 devices like the T-Watch, place them in Espressif's firmware download mode. Use the "1200bps reset" button in the web flasher to do this. Where that does not work, follow the manual process in the following steps.

warning

Do not proceed unless an antenna is connected to avoid possible damage to the device's radio.

  1. Press and hold the crown button to power the device off.
  2. Remove the device's back cover.
  3. Press and hold the boot button.

T-Watch S3 boot button, on the board beneath the back cover

  1. While holding the boot button, press the crown button once to turn the device on.
  2. Release the boot button after two to three seconds.

The device is now in Espressif firmware download mode, and you can flash it with any of the supported methods. Use the Web Flasher and select "T Watch S3" from the device list.

Resources

  • Firmware file: firmware-t-watch-s3-X.X.X.xxxxxxx.bin
  • Purchase Links: