6. T-Watch SX1276¶
6.1. Description¶
The T-Watch SX1276 is an ESP32-based programmable watch kit consisting of a Core PCB and SX1276 backplane. You can even program the T-Watch SX1276 with Arduino, ESP-IDF or MicroPython.
The SX1276 transceivers feature the LoRa® long range modem that provides ultra-long range spread spectrum communication and high interference immunity whilst minimising current consumption.
6.2. 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 Lora transmission
- Support for expandable module use
6.3. Pin details¶
6.3.1. Display¶
| ESP32 | Attribute | Description |
|---|---|---|
| GPIO05 | CS | TFT_CS |
| GPIO18 | SCLK | TFT_SCLK |
| GPIO19 | MOSI | TFT_MOSI |
| GPIO27 | DC | TFT_DC |
| GPIO12 | BL | TFT_BL |
6.3.2. SX1276¶
| ESP32 | Attribute | Description |
|---|---|---|
| GPIO18 | NSS | Lora_NSS |
| GPIO05 | SCK | Lora_SCK |
| GPIO27 | MOSI | Lora_MOSI |
| GPIO19 | MISO | Lora_MISO |
| GPIO26 | DIO | Lora_DIO |