XIAO ESP32S3 for Meshtastic & LoRa

This thumb-sized LoRa dev kit, featuring the XIAO ESP32S3 and Wio-SX1262 LoRa module, is an ideal starter kit for Meshtastic and LoRa/LoRaWAN projects. Supporting WiFi, BLE, and LoRa, it includes a built-in power management chip and can be extended via IIC, UART, and other GPIO interfaces, with compatibility for Arduino development.

Features

• Meshtastic works out of the box: Pre-flashed with Meshtastic firmware, it is ready to work once powered on.
• Uses the onboard Mezanine connector - still allowing access to Xiao pins underneath
• Outstanding RF performance: Supports LoRa(862-930MHz) 2.4GHz Wi-Fi and BLE 5.0 dual wireless communication, support 2~5km(LoRa) and 100m+(Wi-Fi/BLE) remote communication when connected with U.FL antenna.
• Thumb-sized Compact Design: 21 x 18mm, adopting the classic form factor of XIAO, suitable for space-limited projects like wearable devices.
• Powerful MCU Board: Incorporate the ESP32S3 32-bit, dual-core, Xtensa processor running at up to 240MHz, mounted multiple development ports, Arduino / MicroPython supported.
• Elaborate Power Design: Includes a Type-C USB interface and lithium battery charge management.
• Same Hardware for Multiple Applications: Can be developed as a Meshtastic node or router, a single-channel LoRaWAN gateway, or a LoRa & LoRaWAN sensor.

Compatible with XIAO Expansion Board for adding screens and sensors, and add Grove sensors via the Grove expansion Board.

Support connecting an external high-performance LoRa antenna using an IPEX to SMA connector.

Specifications

• ESP32S3:

  • Model: ESP32-S3R8
  • Processor: Xtensa LX7 dual-core, 32-bit
  • Clock Speed: Up to 240 MHz

• LoRa:

  • Based on: Semtech SX1262
  • Frequency Support: 862-930MHz

• BLE (Bluetooth Low Energy):

  • Version: Bluetooth 5.0
  • Feature: Bluetooth mesh

• Wi-Fi:

  • Specifications: Complete 2.4GHz Wi-Fi subsystem

• Interface:

  • ESP32S3:
    • UART: 1x
    • IIC: 1x
    • IIS: 1x
    • SPI: 1x (connected to SX1262)
    • GPIO (PWM): 11x
    • ADC: 9x
    • User LED: 1x
    • Charge LED: 1x
    • Reset Button: 1x
    • Boot Button: 1x
  • Wio-SX1262:
    • User Button: 1x
    • SPI: 1x (connected to ESP32S3)

• Power:

  • Input Voltage (Type-C): 5V
  • Input Voltage (BAT): 4.2V
  • Charging Battery Current: 100mA

• Working Temperature:

  • Range: -40°C to 65°C

• Dimensions:

  • Size: 21 x 17.8mm

What's Onboard

ESP32S3

Wio-SX1262 extension board

Application

• Meshtastic Node&Router: An ultra-small node that can serve as a portable device or as a fixed router to expand the Meshtastic network.
• LoRa/LoRaWAN Sensor: A mini LoRaWAN sensor, ideal for beginners exploring LoRa/LoRaWAN. It can be used with the XIAO extension board and Grove sensors for rapid prototyping.
• LoRaWAN Single Channel Gateway: The most cost-effective single-channel LoRaWAN gateway for connecting multiple LoRaWAN sensors and transmitting data to LoRaWAN Network Servers such as The Things Network and Chirpstack.

Resources

• Wio-SX1262 for XIAO 3D file
• Schematic Diagram Wio-SX1262 for XIAO
• Wio-SX1262 Module Datasheet