RAKwireless RAK4631 WisBlock Core, nRF52840 SX1262, LoRa/BLE module for LoRaWAN and Meshtastic

Product detailed description

RAK4631 is a WisBlock Core module that combines a Nordic nRF52840 microcontroller with Bluetooth Low Energy 5.0 and a Semtech SX1262 LoRa transceiver with TCXO. Simply plug it into any WisBlock base board to quickly create a node for LoRaWAN, LoRa Point-to-Point, or Meshtastic – without any soldering or custom board design. With a link budget of up to 170 dB and a transmit power of 22 dBm, it achieves ranges of several kilometres, while consuming only a few microamps in sleep mode, ensuring battery life for many months. BLE 5.0 can be used for wireless configuration, firmware updates, or pairing with a mobile application. The package includes both PCB antennas: LoRa and 2.4GHz.

Specifications:

• Microcontroller: Nordic nRF52840 (ARM Cortex-M4F, 64 MHz)
• Memory:
  • Flash: 1 MB
  • RAM: 256 kB
• LoRa transceiver: Semtech SX1262 with temperature-compensated crystal oscillator (TCXO)
• Frequency band: EU868 (863–870 MHz, variant H)
• LoRa transmit power: up to 22 dBm (PA Boost)
• Link budget: up to 170 dB
• Supported LoRa modes:
  • LoRaWAN 1.0.3 – classes A, B, and C
  • LoRa Point-to-Point (P2P)
  • Meshtastic, MeshCore
• Bluetooth: BLE 5.0, transmit power −20 to +4 dBm in 4 dB steps
• Antenna connectors: 2× MHF-1 (compatible with U.FL/IPEX1) – separate for LoRa and BLE
• Power supply: 3.3 V from the WisBlock base board
• Power consumption:
  • sleep: approx. 2 μA
  • LoRa receive: approx. 17 mA
  • LoRa transmit (20 dBm): approx. 125 mA
  • BLE transmit (4 dBm): approx. 9 mA
• Interface (via base board): USB, 2× UART, 2× I2C, SPI, GPIO, ADC, NFC, SWD
• Programming: Arduino IDE (RAK WisBlock BSP), PlatformIO, RUI3 API, Zephyr; Meshtastic firmware
• Dimensions:
  • module: 30 × 20 mm
• Operating temperature: −40 to +85 °C

Suitable accessories:

• RAKwireless RAK19007 WisBlock Base Board 2nd Generation, USB-C, LoRa/IoT
• RAKwireless RAK19003 WisBlock Mini Base Board, USB-C, LoRa/IoT
• WisBlock RAK1901 SHTC3 Air Temperature and Humidity Sensor
• 4W Solar Power Module for Meshtastic node 18650 RAK4631/Heltec
• Pigtail U.FL/IPEX1 - SMA Female, cable 1.15mm, 15cm
• NiceRF SW868-ZD115 Antenna 2.15dBi 11cm 868MHz

Package contents:

• 1× RAK4631 WisBlock Core module
• 1× PCB antenna for LoRa, MHF-1 connector
• 1× 2.4 GHz PCB antenna for BLE, MHF-1 connector

Note:

• RAK4631 is only the core of the WisBlock system – it does not function on its own and requires a base board (RAK19007, RAK19003 or similar) to provide power and USB.
• Never transmit with the module without a connected antenna, as you may damage the final stage.
• This product is not a standalone functional unit and may require professional installation.
• Product images are for illustrative purposes only and may sometimes differ from the actual appearance of the item. However, this does not change their basic properties.