Build Bluetooth-to-Cloud Products Faster with the Ezurio BL54L15µ Module and Blecon

The Ezurio BL54L15µ is a compact Bluetooth Low Energy (LE) module designed to simplify the development of connected devices and it's fully supported by Blecon for secure, scalable Bluetooth-to-cloud connectivity.

Together, Ezurio and Blecon enable developers to build and deploy cloud-connected Bluetooth products quickly, without the complexity of pairing, custom apps or infrastructure.

What is the BL54L15µ?

The BL54L15µ is a miniature Bluetooth LE module based on Nordic Semiconductor’s nRF54L15 SoC, offering:

• Ultra-low power operation
• Integrated antenna in a small footprint
• Ideal form factor for sensors, wearables, medical and industrial applications
• Developer-friendly tools including the DVK-BL54L15u development kit

This module is designed for fast integration into both new products and existing designs that require secure, wireless connectivity.

Connect to the Cloud with Blecon

Using the Blecon Device SDK, the BL54L15µ connects to the cloud via the Blecon Network — no Bluetooth pairing or custom gateway required.

Devices can use any nearby Blecon-enabled Hotspot (including phones, tablets, laptops or dedicated gateways) to route data securely to the cloud.

The Blecon Network supports:

• Secure device identity and authentication
• Bi-directional communication, including OTA firmware and feature updates
• Time synchronisation and device geolocation
• Integration with cloud services like AWS, Memfault and more

This makes it easy to deploy reliable Bluetooth cloud connectivity across a range of environments.

Developer-Friendly and Flexible

The BL54L15µ is supported by Blecon’s developer tools and documentation, making it easy to connect your Bluetooth devices to the cloud without writing your custom Bluetooth profile or managing complex infrastructure.

Developers can quickly get started using the DVK-BL54L15u development kit and pre-built example applications:

1. Download and flash the Blecon demo application to your board using nRF Connect
   
   
2. Access the Zephyr shell over USB to interact with the device
   
   
3. Run built-in commands to fetch the device’s unique ID, ping the cloud and test secure communication
   
   
4. Register your device with your own Blecon network using the mobile app or command line
   
   
5. Send and receive data with cloud applications using Blecon’s secure, bidirectional messaging
   
   
6. Add integrations with AWS, Memfault, webhooks and other cloud services using your Blecon Console

All cryptographic identity, secure communication and Bluetooth transport is handled by the Blecon Device SDK, allowing developers to focus on application logic.

Prebuilt firmware makes evaluation simple and when you're ready, you can integrate Blecon directly into your own nRF Connect SDK project based on Zephyr RTOS.

Designed for Integration and Scale

By combining the BLE and 802.15.4 dual-mode capabilities of the Ezurio BL54L15µ with Blecon’s Bluetooth cloud infrastructure, developers can:

• Eliminate the need for complex gateway deployments
• Reduce time-to-market for connected products
• Build scalable, cloud-connected applications with low power budgets
• Maintain security and control without sacrificing development speed

Start Building with the BL54L15µ and Blecon

If you're evaluating the BL54L15µ or planning to integrate it into a connected product, Blecon provides everything needed to get Bluetooth devices talking to the cloud — securely and without custom infrastructure.

The developer guide includes:

• Flashable demo firmware
• Shell commands to test identity, connectivity, and requests
• Instructions for network registration and integration with your own stack

Start with the DVK-BL54L15u Developer Guide

Want to Learn More?

Download the BL54L15µ + Blecon Product Brief for technical details

Order the DVK-BL54L15u from Ezurio to start prototyping

Explore Blecon's Developer Resources for documentation, examples and SDKs

Get in Touch if you have a specific use case or want technical guidance

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