XPLR-IOT-1 quick start

The XPLR-IOT-1 explorer development platform provides developers with a single device to enable evaluation of the different u-blox product centers: short range, cellular, positioning, and services. A rechargeable battery allows portable operation.

The NORA-B106 module is the main CPU with two Arm Cortex M33 cores and provides Bluetooth LE. UARTs connect each of the other technologies – NINA-W156 for Wi-Fi, SARA-R510S for cellular, and MAX-M10S for GNSS. Internet access over cellular or Wi-Fi connect to Thingstream’s MQTT broker. An NFC antenna provides NFC tag capability.

A USB connection provides UART connections to each of the modules. USB is also connected directly to the NORA-B1 and SARA-R5. For quick verification or configuration of the modules, the respective evaluation applications – s-center, c-center, and u-center – may be used when NORA-B1 is not active. 

XPLR-IOT-1 includes sensors for pressure, temperature, humidity, movement, and ambient light. A Qwiic® connect system allows connection of other I2C devices. 

The pre-loaded firmware establishes internet connectivity, activates the sensors, and sends the sensor data over MQTT messages through Thingstream. Data can then be formatted and sent to a dashboard based on Node-RED. 

Cellular connectivity designed and tested for use in North America. Operation in other regions pending local M1 coverage.

Getting started

Front panel

The following interfaces and sensors are available on the front panel:

• RGB LED - shows various status information 

• Ambient light sensor

• Two user buttons

USB connection

A USB connection to a host PC is used for charging the internal battery and for interacting with and configuring XPLR-IOT-1 over a command line interface. 

• Be sure to fully charge the battery, especially on the first use.

Mobile app

A mobile app to associate the XPLR-IOT-1 with a Thingstream account is available on Android. The u-blox XPLR-IOT Utility provides an easy interface for configuring the XPLR-IOT-1 explorer kit..

PCBA Revision C

Revision C of the PCB assembly uses a FTDI USB-UART interface chip. Assuming the host PC has an Internet connection, Windows device drivers will automatically be downloaded and installed when XPLR-IOT-1 is powered-on and connected to a host PC. COM ports are assigned in order:

• NORA-B106 is assigned to port A which will have the lowest COM port number. In the case of the first Device Manager screen shot on the right, this is "USB Serial Port (COM19)".
  Default baud rate is 115,200 bps.

• SARA-R510S is assigned to port B, with an increment in the port assignment to "USB Serial Port (COM 20)".
  Default baud rate is 115,200 bps.

• NINA-W156 is assigned to port C, with an increment in the port assignment to "USB Serial Port (COM21)".
  Default baud rate is 115,200 bps.

• MAX-M10S is assigned to port D, with an increment in the port assignment to "USB Serial Port (COM22)".
  Default baud rate is 9600 bps.

Actual COM port assignments will vary from system to system. Regardless of the starting port number, the order of assignments is consistent.

PCBA Revision B

Revision B of the PCB assembly uses a Silicon Labs USB-UART interface chip. Windows device drivers must be installed prior to plugging in XPLR-IOT-1:

1. Download the device drivers.

2. Unzip the file to a convenient location.

3. Run the installer for your operating system.

4. Connect XPLR-IOT-1 to a host PC using a USB A to micro-B cable.

5. Turn on XPLR-IOT-1. Four virtual COM ports (VCP) will enumerate.

6. Open Device Manager to view the installed ports. In this example, use the second Device Manager listing.

COM ports are assigned according to the Interface number:

• NORA-B106 is assigned to Interface 0 (COM8) with a default baud rate of 115,200 bps.

• SARA-R510S is assigned to Interface 1 (COM5) with a default baud rate of 115,200 bps.

• NINA-W156 is assigned to Interface 2 (COM6) with a default baud rate of 115,200 bps.

• MAX-M10S is assigned to Interface 3 (COM7) with a default baud rate of 9,600 bps.

COM port assignments differ among host PCs. Using the image to the right as an example, NORA-B106 on interface 0 is assigned to COM8.

Initial configuration

Before XPLR-IOT-1 can send messages to Thingstream, Wi-Fi and cellular configurations must be established, and appropriate things created on the Thingstream platform. 

A redemption code is provided on the rear cover of XPLR-IOT-1. When the code is redeemed, the following actions are taken:

• Create the cellular thing matching the eSIM ID of XPLR-IOT-1

• Create an IP thing to use with Wi-Fi connections

• Create an "XPLR-IOT-1 - Dashboard" thing used to direct incoming messages to the default flow

• Create a default flow that is used to parse the MQTT data from both cellular and Wi-Fi things, then either send an email with the data, or forward data for use with a locally hosted Node-RED dashboard.

Claim redemption code

To claim the redemption code, perform the following steps:

• Log into your Thingstream account

• In the left menu, select "Dashboard", then click "Communication Services"

• Click "Things"

• Click on "Add Thing" in the upper right

• Click on the "Use a code" tab

• Click the "Redeem your thing" button

• Enter the redemption code, then click the "Next" button

• Confirm the devices are created for the XPLR-IOT-1:

  • 1. XPLR-IOT-1_xxxxxxx_Wi-Fi - This thing accepts MQTT Now messages over Wi-Fi

    2. XPLR-IOT-1 - Dashboard - This thing aggregates the Wi-Fi and cellular messages

    3. <CCID> - This thing accepts MQTT Anywhere messages over cellular networks

Cellular - MQTT Anywhere provisioning

• At the Thingstream dashboard, display the details tab for the new cellular thing.

• Open a terminal program, such as TeraTerm, and connect it to the NORA-B106 on Interface 0 at 115,200 bps.

• Type 'help' into the terminal window to show available commands.