2. T-Watch SIM800L¶
2.1. Description¶
The T-Watch SIM800L is an ESP32-based programmable watch kit consisting of a Core PCB and a SIM800L backplane. You can even program the T-Watch SIM800L with Arduino, ESP-IDF or MicroPython.
2.2. 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 SIM card phone communication function
- Support microphone
- Support speakers
- Support for expandable module use
2.3. Pin details¶
2.3.1. Display¶
| ESP32 | Attribute | Description |
|---|---|---|
| GPIO05 | CS | TFT_CS |
| GPIO18 | SCLK | TFT_SCLK |
| GPIO19 | MOSI | TFT_MOSI |
| GPIO27 | DC | TFT_DC |
| GPIO12 | BL | TFT_BL |
2.3.2. SIM800L¶
| ESP32 | Attribute | Description |
|---|---|---|
| GPIO33 | TX | SIM Card,UART_SIM_TX |
| GPIO34 | RX | SIM Card,UART_SIM_RX |
| GPIO14 | RST | SIM Card,SIM_RST |
| GPIO15 | PWKEY | SIM Card,SIM_PWKEY |
| GPIO04 | BOOST | SIM Card,SIM_BOOST_CTRL |