The AI Freezer Monitor is a DIY IoT monitor that uses machine learning (ML) to provide early warnings of potential equipment failure. This guide covers building the device, collecting training data, setting up email alerts, training a custom auto encoder machine learning model, and deploying the model to a Feather HUZZAH32 development board.

The project is designed to be functional for low temperature scientific freezers (-60 C), with the goal of reducing catastrophic failure and the need to keep backup freezers running full-time. However, please note that this project is primarily for demonstrative and educational purposes and has not gone through extensive testing.

This project takes about two to three hours to fully complete. But the device will need to passively collect temperature data for about 30 days before you will be able to train the machine learning model.


Angled shot of rectangular microcontroller with headers.
Aww yeah, it's the Feather you have been waiting for, this time with pre-assembled headers! The HUZZAH32 is our ESP32-based Feather, made with the...
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Angled shot of a square, blue, thermocouple amplifier with a green terminal block.
Thermocouples are very sensitive, requiring a good amplifier with a cold-compensation reference. The Adafruit MCP9600 does all that for you, and can be easily...
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Angled shot of a Thermocouple Type-K Glass Braid Insulated wire.
Thermocouples are best used for measuring temperatures that can go above 100 °C. This is a bare wires bead-probe which can measure air or surface temperatures. Most inexpensive...
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Angled shot of half-size solderless breadboard with red and black power lines.
This is a cute, half-size breadboard with 400 tie points, good for small projects. It's 3.25" x 2.2" / 8.3cm x 5.5cm with a standard double-strip in the...
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Angled shot of Premium Male/Male Jumper Wires - 40 x 3 (75mm)
Handy for making wire harnesses or jumpering between headers on PCB's. These premium jumper wires are 3" (75mm) long and come in a 'strip' of 40 (4 pieces of each of...
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Micro USB to Micro USB OTG Cable
This cable is a little unusual, rather than having a USB A plug on one end, it has two Micro B USB connections! What is this for? It's for when you have a "USB...
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This guide was first published on Jan 27, 2021. It was last updated on Mar 08, 2024.

This page (Overview) was last updated on Mar 08, 2024.

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