12. T-Watch NFC¶
12.1. Description¶
The T-Watch NFC is an ESP32-based programmable watch kit consisting of a Core PCB and NFC backplane. You can even program the T-Watch NFC with Arduino, ESP-IDF or MicroPython.
12.2. 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
12.3. Pin details¶
12.3.1. Display¶
| ESP32 | Attribute | Description |
|---|---|---|
| GPIO05 | CS | TFT_CS |
| GPIO18 | SCLK | TFT_SCLK |
| GPIO19 | MOSI | TFT_MOSI |
| GPIO27 | DC | TFT_DC |
| GPIO12 | BL | TFT_BL |
12.3.2. PN532¶
| ESP32 | Attribute | Description |
|---|---|---|
| GPIO21 | I2C | PN532_SDA |
| GPIO22 | I2C | PN532_SCL |
| GPIO33 | RSTO | PN532_RSTO |
| GPIO34 | IRQ | PN532_IRQ |