•November 15, 2023
Welcome to the Blues Developer Blog
Technical articles on everything in the Internet of Things, from Arduino to Zephyr. Written by developers, for developers.
Sending and Receiving Binary Files with the Notecard and Notehub
Learn how to use the card.binary APIs to send and receive files from/to a Micro SD card using the Blues Notecard and Notehub.
•November 28, 2023Latest
•November 15, 2023•November 7, 2023
Latest
Behind the Amplifier - A Passion for IoT with Ben Lim
Behind the Amplifier is a blog series where we highlight each of our awesome contributors, showcasing what they are working on, and sharing their thoughts on the IoT. This edition features Ben Lim.
•November 15, 2023The Easiest Way to Upgrade Raspberry Pi OS from Bullseye to Bookworm
Learn how to perform an in-place upgrade from Raspberry Pi Bullseye to Bookworm.
•November 7, 2023Blog Archive
The Easy Way to Build Wi-Fi Products With a Cellular Fallback
Learn how to make Wi-Fi + cellular simple and secure with the Blues Notecard Cell+WiFi
•October 31, 2023Read and Write Images and Text Files with a Micro SD Card and Arduino
Learn how to use Arduino/C to read and write images and text files to a Micro SD card.
•October 24, 2023Use Rapid Prototyping to Speed Up Your Hardware Designs
Learn how to use rapid prototyping to speed up your development process.
•October 20, 2023Blues “Most Valuable Hackster” Round 2!
Build IoT projects with the Notecard, publish them on Hackster, and get paid!
•October 16, 2023Behind the Amplifier - Exploring Pradeep's IoT Journey
Behind the Amplifier is a new series where we highlight each of our awesome contributors, showcasing what they are working on, and sharing their thoughts on the IoT.
•October 3, 2023Blues Launches into LoRa at The Things Conference
Blues sees overwhelming interest in the new Notecard LoRa at the Things Conference in Amsterdam.
•September 28, 2023Establishing a Robust MLOps Workflow for TinyML
Create a workflow for continuously improving machine learning models on remote devices.
•September 26, 2023Cellular, Wi-Fi, LoRa — The Next Generation of Notecards
Everything you need to know about the new Cell+WiFi, WiFi, and LoRa Notecards
•September 20, 2023Announcing the Notecard Developer Firmware Release v5.3.1
Learn about the new features included in the latest Notecard developer firmware release.
•September 18, 2023Blues at Fab23 Bhutan
With support from Blues.io, I gave a workshop at the Fab23 conference in Bhutan, showcasing the power of TinyML using Blues, even in remote locations.
•September 6, 2023Digitalizing the Wild with Blues
Explore a creative solution to help prevent human-wildlife conflicts with LoRa and Blues Cellular IoT.
•August 31, 2023Building a Connected Clock with Blues and the Raspberry Pi Pico
Learn how to make web requests with the Notecard and use Timer Interrupts on Micropython whilst building a clock.
•August 24, 2023How It's Made — Manufacturing Notecard at Scale
Take a virtual visit to our manufacturing facility to see how Notecard is made.
•August 17, 2023Don't AT Me — Use a Modern JSON API Instead
Notecard uses a JSON API to make IoT application development faster, more intuitive, and more maintainable than developing with AT commands.
•August 11, 2023New Notehub Features You May Have Missed
Get caught up on some of the most recently released Notehub features.
•August 9, 2023Results from the 2023 Blues IoT Survey
See a high-level recap of the latest Blues developer survey.
•August 2, 2023Add Reliable Power Backup to Notecard with Scoop
The all new Scoop features a Lithium-Ion Capacitor to provide Notecard with backup power and a lower self-discharge rate than traditional LiPo batteries.
•July 26, 2023Getting Started with Blues Notecard and the Raspberry Pi Pico
Learn how to add an affordable cellular option to your Raspberry Pi Pico.
•July 19, 2023Integrating Waylay with the Blues Notehub
Learn more about Waylay and how to integrate it within your IoT solution.
•July 12, 2023When to Use Tadiran (Li-SOCl2) vs Lithium Polymer (LiPo) Batteries in IoT Applications
A high-level comparison of Tadiran Li-SOCl2 batteries and Lithium Polymer (LiPo) batteries.
•July 6, 2023How We Unit Test Embedded C Code at Blues
Use the Blues approach to unit testing in your next embedded C project.
•June 29, 2023Get Started With Zephyr—The Easy Way
Learn how to get a Zephyr app up and running fast with Blues.
•June 20, 2023Use Cell Tower and Wi-Fi Triangulation to Achieve Pin-Point Locations, Without GPS
Learn how to use the Notecard to ascertain location information via cell tower and/or Wi-Fi access point triangulation, when GPS is unavailable.
•June 14, 2023How to Build an Asset Tracker With Geofence-Driven Alerts
Learn how to build an asset tracking solution that can take GPS readings, and send out alerts when the tracker leaves a configured geofence.
•June 7, 2023Easiest Way to Add Cellular to an ESP32 IoT Project
Learn how to add affordable prepaid cellular to an ESP32-based IoT solution
•May 31, 202310 Examples to Help You Learn JSONata
Learn JSONata through a series of examples of the language in action
•May 24, 2023Easiest Way to Add Cellular to the Raspberry Pi Zero 2
Learn how to add an affordable cellular option to your Raspberry Pi Zero.
•May 17, 2023The Idiot-Proof Guide to Upgrading Raspberry Pi from Buster to Bullseye
Learn how to perform an in-place upgrade of your Raspberry Pi OS from Buster to Bullseye.
•May 10, 2023A Practical Look at PIO on the Raspberry Pi Pico
Learn more about using Programmable I/O on the Raspberry Pi Pico microcontroller.
•May 3, 2023Encrypt and Securely Deliver Data over Cellular
You can now encrypt Notecard data before it is securely routed to your cloud application.
•April 26, 2023Optimizing Raspberry Pi Power Consumption
Tips and tricks for optimizing the power consumption of a Raspberry Pi to make it a candidate for off-grid remote monitoring.
•April 19, 2023