---
id: wisBlock-hardware
title: RAK WisBlock 4631
sidebar_label: RAK WisBlock
---

The RAK WisBlock is a low power modular hardware system that can be used to build Meshtastic devices.  Soldering is only required for the optional OLED screen.

You will need a [base board](https://store.rakwireless.com/collections/wisblock-base), a [core 4631 LPWAN module](https://store.rakwireless.com/collections/wisblock-core/products/rak4631-lpwan-node) and optionally a GPS Sensor to build a Meshtastic device.

Both available base boards ([5005](https://store.rakwireless.com/collections/wisblock-base/products/rak5005-o-base-board) & [19003](https://store.rakwireless.com/collections/wisblock-base/products/wisblock-base-board-rak19003)) have a reset button, support an OLED screen, and have built in connectors for a 3.7V LIPO battery (max 4.3V) and 5V Solar panel (max 5.5V)

A user button is not possible with the 19003 base board, it may be possible to add a user button to the 5005 base board using the [13002 IO module](https://store.rakwireless.com/collections/wisblock-interface/products/adapter-module-rak13002).

To add a GPS to the 5005 base board you need the [1910 GPS sensor](https://store.rakwireless.com/collections/wisblock-sensor/products/rak1910-max-7q-gnss-location-sensor) it is supported on slot A of the 5005 board via UART.

To add a GPS to the 19003 base board you need the [12500 GPS sensor](https://store.rakwireless.com/products/wisblock-gnss-location-module-rak12500) it is supported via I2C on slot B for firmware versions 1.49 and above.

Flashing the firmware is a simple process connect your device via usb and click the reset button twice and a drive will appear on Windows Linux or Mac drag the appropriate .uf2 firmware file onto the root of the drive and the firmware will be updated.

There is currently no pin required to pair RAK devices via BLE.

* nRF52840 - Bluetooth BLE 5.0 and very low power consumption
* SX1262 - LoRa transceiver
* Frequency options:
    * 433 Mhz
    * 470 Mhz
    * 799 Mhz
    * 865 Mhz
    * 868 Mhz
    * 915 Mhz
    * 920 Mhz
    * 923 Mhz
* Optional GPS
* U.FL antenna connector
* Optional switches
* Optional screen


* Firmware for 5005 base board: [`firmware-rak4631_5005-1.x.x.uf2`](https://meshtastic.org/firmware)
* Firmware for 19003 base board: [`firmware-rak4631_19003-1.x.x.uf2`](https://meshtastic.org/firmware)
* [Installation instructions](https://docs.rakwireless.com/Product-Categories/WisBlock/RAK4631/Quickstart/#rak4631-lora-mesh-via-meshtastic)
* Dont forget to [update the bootloader](https://docs.rakwireless.com/Product-Categories/WisBlock/RAK4631/Quickstart/#updating-the-bootloader) first!
* RAK's [GitHub Page](https://github.com/RAKWireless/WisBlock) for the WisBlock

<img alt="RAK4631 Core Module" src="/img/hardware/rak4631.png" style={{zoom:'50%'}} />