8. T-Watch Max98357A

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8.1. Description

The T-Watch Max98357A is an ESP32-based programmable watch kit consisting of a Core PCB and Max98357A backplane. You can even program the T-Watch Max98357A with Arduino, ESP-IDF or MicroPython.

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8.2. Feature

  • Main chip: ESP32, dual core MCU (integrated dual mode Bluetooth/wifi), PMU power management
  • Display: 1.54 inch LCD capacitive touch screen
  • Sensor: BMA423 three-axis accelerometer, built-in step counting algorithm, activity recognition / tracking, advanced gesture recognition, etc.
  • Combination kit: lithium battery, design open mold, and thick strap, and black and white
  • Development platform: ESP-IDF (native SDK), Arduino, Lua, MicroPython, Scratch
  • Support for expandable module use

8.3. Pin details

8.3.1. Display

ESP32 Attribute Description
GPIO05 CS TFT_CS
GPIO18 SCLK TFT_SCLK
GPIO19 MOSI TFT_MOSI
GPIO27 DC TFT_DC
GPIO12 BL TFT_BL

8.3.2. Max98357A

ESP32 Attribute Description
GPIO25 LCK SX1276_LCK
GPIO26 BCK SX1276_BCK
GPIO33 DIN SX1276_DIN

8.4. Demo program