6. T-Watch SX1276

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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.

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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

6.4. Demo program