3. T-Watch GPS¶
3.1. Description¶
T-Watch GPS is an ESP32-based programmable watch kit consisting of Core PCB and GPS-M8N backplane. You can even program T-Watch GPS with Arduino, ESP-IDF or MicroPython.
3.2. 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 GPS Positioning Function: * Latitude, Latitude, Altitude * Data Acquisition
- Support TF card read and write
- Support for expandable module use
3.3. Pin details¶
3.3.1. Display¶
| ESP32 | Attribute | Description |
|---|---|---|
| GPIO05 | CS | TFT_CS |
| GPIO18 | SCLK | TFT_SCLK |
| GPIO19 | MOSI | TFT_MOSI |
| GPIO27 | DC | TFT_DC |
| GPIO12 | BL | TFT_BL |
3.3.2. TF Card¶
| ESP32 | Attribute | Description |
|---|---|---|
| GPIO13 | CS | TF_CS |
| GPIO15 | MOSI | TF_MOSI |
| GPIO02 | MISO | TF_MISO |
| GPIO14 | SCLK | TF_SCLK |
3.3.3. NEO GPS M8N¶
| ESP32 | Attribute | Description |
|---|---|---|
| GPIO33 | TX | UART_GPS_TX |
| GPIO34 | RX | UART_GPS_RX |