Welcome to the Blues Developer Blog

Technical articles on everything in the Internet of Things, from Arduino to Zephyr. Written by developers, for developers.

October 8, 2025

Moving from Arduino to FreeRTOS—A Hands-On Tutorial

A hands-on guide for moving Arduino-based firmware to FreeRTOS, with examples using Blues Notecard and external sensors

Notecard Disconnected

Having trouble connecting?

Try changing your USB cable as some cables do not support transferring data. If that does not solve your problem, contact us at support@blues.com and we will get you set up with another tool to communicate with the Notecard.

Advanced Usage

The help command gives more info.

Connect a Notecard

Use USB to connect and start issuing requests from the browser.

Try Notecard Simulator

Experiment with the Notecard's API on a Simulator assigned to your free Notehub account.