Rob Lauer
Published © Apache-2.0

The Three Fridge Problem

Learn how to use three different radios (Cellular, Wi-Fi, and LoRa) to monitor three different devices, without changing your firmware!

BeginnerFull instructions provided3 hours395
The Three Fridge Problem

Things used in this project

Hardware components

Blues Notecard (Cellular)
Blues Notecard (Cellular)
×1
Blues Notecard (Wi-Fi)
Blues Notecard (Wi-Fi)
×1
Blues Notecard (LoRa)
Blues Notecard (LoRa)
×1
Blues Notecarrier F
Blues Notecarrier F
×1
SparkFun Pressure Sensor - BMP581 (Qwiic)
SparkFun Pressure Sensor - BMP581 (Qwiic)
×1
Adafruit Magnetic contact switch
×1

Software apps and online services

Blues Notehub.io
Blues Notehub.io
Blynk
Blynk

Story

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Code

Gist

Credits

Rob Lauer

Rob Lauer

24 projects β€’ 128 followers
Senior Director of Developer Relations @ Blues

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