What’s New
Shop
Docs
homechevron_rightBlog

Welcome to the Blues Developer Blog

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

RSSI, RSRP, RSRQ, and SINR: Reading Cellular Signal Quality in the IoT banner

November 3, 2026

RSSI, RSRP, RSRQ, and SINR: Reading Cellular Signal Quality in the IoT

Learn what RSSI, RSRP, RSRQ, and SINR actually measure, why signal bars can be misleading, and how to find weak devices in your fleet.

October 13, 2026

How to Estimate Battery Life for a Cellular IoT Device

The math for estimating a cellular IoT device's battery life, a calculator for your own numbers, and how to measure the real answer with Blues Mojo.

September 25, 2026

Protect User Privacy with Notecard Location Fuzzing

Your product may need to know where it is, but your customers probably don't want it reporting their street address. See how Notecard can obfuscate location.

September 2, 2026

What’s New in Notehub—September 2026 Edition

What we've shipped in Notehub recently, including the Notehub IQ beta, two-factor authentication, customizable table columns, and new filtering options.

September 1, 2026

Notehub IQ Tips & Tricks

Tips and tricks from a month of using Notehub IQ, including ways to work with session data, workflows and automations, and more.

August 26, 2026

Keep API Keys Off the Device: Use Authenticated Web Calls via Proxy Routes

Stop including secret keys on your devices! Notehub proxy routes let your credentials live in the cloud while the device stays anonymous.

August 11, 2026

Cut Your Data Usage in Half with Notefile Templates

Every JSON Note repeats its field names with its values for the life of the device. Notefile templates have Notecard send fixed-length binary records instead.

Browse all 131 posts