8. T-Watch Max98357A¶
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.
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 |