14. T-Watch 2020

../../_images/t201.png

14.1. Description

The T-Watch 2020 is an ESP32-based programmable watch.

You can even program the T-Watch 2020 with Arduino, ESP-IDF or MicroPython.

../../_images/model41.jpg

14.2. 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
    • AXP202 PMU(Power Management Unit)
    • MAX98357A I2S PCM input Class D audio amplifier
    • Support RTC, IR, Vibration Motor function
  • Combination kit: lithium battery, design open mold, and thick strap, and black and white

  • Development platform: ESP-IDF (native SDK), Arduino, Lua, MicroPython, Scratch

14.3. Pin details

14.3.1. Display

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

14.3.2. BMA423

ESP32 Attribute Description
GPIO21 I2C PN532_SDA
GPIO22 I2C PN532_SCL
GPIO39 INT PN532_INT

14.3.3. MAX98357A

ESP32 Attribute Description
GPIO25 I2S I2S_WS
GPIO26 I2S I2S_BCK
GPIO33 I2S I2S_DOUT

14.3.4. AXP202

ESP32 Attribute Description
GPIO21 I2C AXP202_SDA
GPIO22 I2C AXP202_SCL
GPIO35 INT AXP202_INT

14.3.5. Touch

ESP32 Attribute Description
GPIO23 I2C I2C_SDA
GPIO32 I2C I2C_SCL
GPIO38 INT I2C_INT

14.3.6. Motor

ESP32 Attribute Description
GPIO04 1-Wire Motor

14.3.7. Vibration Motor

ESP32 Attribute Description
GPIO04 1-Wire Motor

14.3.8. IR

ESP32 Attribute Description
GPIO13 1-Wire IR

14.3.9. RTC

ESP32 Attribute Description
GPIO37 1-Wire RTC

14.4. Demo program