Sera NX040 Series - UWB + Bluetooth LE + NFC Modules
Learn more and compare with similar parts on the family page.

Specifications

Antenna Type
External
Chipset (Wireless)
NXP Trimension SR040, Nordic nRF52833-CJAA
Interfaces - General
UART, USB, GPIO, ADC, PWM, SPI, I2C
Packaging
Tape and Reel
Product Type
Embedded Module
Software
AT Commands, Zephyr, Python Scripting
System Architecture
Hosted or hostless
Technology
Bluetooth 5.4, UWB, NFC

Documentation

Name Part Type Last Updated
Product Brief - Sera NX040 Series 453-00174R Product Brief 09/23/2024
Datasheet - Sera NX040 Series 453-00174R Datasheet 03/25/2024

Buy Now

Distributor Part In Stock Region Buy
DigiKey 453-00174R 992 North America Buy Now
Mouser 453-00174R 371 North America Buy Now
Arrow Electronics 453-00174R 0 North America Buy Now
Avnet 453-00174R 0 North America Buy Now
Future Electronics 453-00174R 0 North America Buy Now


FAQ

Can I develop my application on the NX040 using the nRF Connect SDK?

No.  The nRF Connect SDK is not supported as the SW interface to the NXP SR040 UWB device is not publicly available. The NX040 supports command/response AT Interface or Ezurio Canvas FW with MicroPython scripting for application development.

The Sera NX040 datasheet specifies a power supply range of 1.8V-3.6V with 3.3V being typical. Are there any conditions that would require a higher voltage than 1.8V?

The module works down to 1.8V and there are no technical issues with using a 1.8V power supply. However, designs may want to consider setting the lower voltage limit as 2.0V as it is possible that a UWB current spike could occur when the host or BLE radio is doing some other function which could potentially cause a brownout/reset on the UWB chip.

Why can’t the Sera NX040 module configured as a responder in a two-way ranging configuration use a coin cell battery?

One of the NX040 UWB module power supply options is battery supply – limited peak current capability mode. This mode is typically reserved for tags who are considered Initiators. In a two-way ranging session, devices configured in a responder role are continuously listening in receive mode for an initiator. The current draw in receive mode is too high for a battery to support. 

Similarly, in a 3D positioning setup, the device used as an anchor (responder) will need to be externally powered.

Tag (initiator) devices can run on a battery given they do not need to be listening for other devices.

I am having problems installing pyocd for Python

At the time of writing there may be issues installing pyocd for Python 3.12. If you experience issues such as failing to build wheel for hidapi, try reverting to Python 3.10 or 3.11.

We have also seen issue where pyocd reports an error during install, requiring VS C++ build tools. Be sure to install the C++ build tools using the link in the error. If the C++ build tools install fail then try to temporarily disable virus checking (or consult with your IT department) as we have seen some antivirus block some VS scripts used during build tool installation.