14. T-Watch 2020¶
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.
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 |