RAK3112 WisDuo LoRa + WiFi + BLE module targets Edge AI and Meshtastic UI

RAKwireless “RAK3112 WisDuo Module for Edge AI with LoRa” combines an ESP32-S3 WiFi and BLE SoC with a Semtech SX1262 LoRa transceiver for Edge AI applications and Meshtastic user interfaces.

The 3-in-1 LoRa + WiFi  + BLE module is an update to the ESP32-based RAK11200 WisDuo LoRa module, which has limitations in terms of computing power and memory. Those became apparent in more demanding applications such as Edge AI or complex mesh networks. With 16MB of flash and 8MB of PSRAM and a more powerful ESP32-S3 microcontroller, the RAK3112 WisDuo module overcomes those limitations for camera and audio processing, as well as mesh networks like Meshtastic. It also offers a more powerful alternative to the pin-compatible RAK11160 STM32 + ESP32-C2 module that’s better suited for battery-powered sensors.

RAKwireless RAK3112 specifications:

• Main MCU – Espressif Systems ESP32-S3
  • CPU – Xtensa 32-bit LX7 dual-core CPU @ 240 MHz with vector instructions, AI acceleration, and LCD controller support
  • Memory – 512 kB SRAM, 8 MB PSRAM, 16 kB RTC SRAM
  • Wireless – 2.4 GHz WiFi 4 and Bluetooth 5.0
• Storage – 16 MB Flash
• LoRa transceiver – Semtech SX1262
  • LoRa and LoRaWAN support
  • Frequency bands
    • 863 MHz to 928 MHz
    • IN865, EU868, AU915, US915, KR920, RU864, and AS923-1/2/3/4
  • LoRaWAN 1.0.2 specification compliant (LoRaWAN Basics Modem support in preparation)
  • LoRa Point-to-Point (P2P) communication
  • Range greater than 10 km with optimized antenna
• 44x castellated pads with USB, UART, I2C, SPI, ADC, GPIO, etc…
• Antennas – Two u.FL antenna connectors or RF pads
• Supply Voltage – 3.0V ~ 3.6V
• Dimensions – 23 x 15 x 3 mm
• Temperature Range – -40°C to 85°C

The module is programmable via ESP-IDF, Arduino, and PlatformIO, but is not supported by the company’s Rui3 IoT development platform used in various modules from the company. RAKwireless also mentions plug-and-play compatibility with WisBlock baseboards, but the RAK3112 currently lacks an adapter, such as the RAK11162 Core Module featuring the RAK11160, for easy integration with the WisBlock ecosystem. [Update: The RAK3312 is the equivalent WisBlock LoRaWAN module, and will be found in the upcoming WisMesh RAK3312 Starter Kit]

The LoRa module is well-suited for GUI projects and Meshtastic UI, as well as Edge ML support via TensorFlow Lite Micro and the ESP-DL library. The documentation provides additional information about the hardware and explains how to get started with Arduino programming and connect the module to The Things Network (TTN).

The new RAK3112 WisBlock LPWAN module is sold for $8 on AliExpress and RAKwireless’ store, which compares to $6.5 and $9.9 for the RAK11160 and RAK11200 modules, respectively. Unless you plan to use your own, you’ll also need to add one of the antenna options to your order for $3 to $6.

Support CNX Software! Donate via cryptocurrencies, become a Patron on Patreon, or purchase goods on Amazon or Aliexpress. We also use affiliate links in articles to earn commissions if you make a purchase after clicking on those links.