In the NAU7802 Food Scale Learn Guide, you can build a food scale using CircuitPython, a NAU7802 STEMMA board and a strain gauge. In this guide, you'll take that project and connect it to Microsoft Azure to log the weight measurements over time. Additionally, you'll setup a text alert when it looks like you need to refill the food container.

Tracking inventory usage over time is a great way to utilize IoT tools. It can help you see patterns and better plan for the future. In the context of pet food, it can also help you monitor your pet's diet.

Prerequisite Guides

  • The Getting Started with Microsoft Azure and CircuitPython Learn Guide goes through everything you need to get up and running with Microsoft Azure and CircuitPython. You'll need to follow along with the steps in that guide to make sure that your Azure account is setup properly to use for CircuitPython Azure IoT Central projects.
  • This guide is considered part two to the NAU7802 Food Scale Learn Guide. You'll need to follow along with that guide to assemble the electronics and 3D printed parts for the food scale.

The following buttons take you to guides on the major components for reference:

Parts

Angled shot of small square purple dev board.
What has your favorite Espressif WiFi microcontroller, comes with our favorite connector - the STEMMA QT, a chainable I2C port, and has...
$12.50
In Stock
Video of a pair of white hand's trying to bend a strain gauge. The gauge is connected to a breakout board which is also connected to an OLED display on a half-size breadboard. The numbers on the OLED display show high digit numbers.
If you are feeling the stress and strain of modern life a Wheatstone bridge and you want to quantify it, this handy breakout will do the job, no sweat! The Adafruit...
$5.95
In Stock
Angled shot of a Strain Gauge Load Cell - 4 Wires - 20Kg.
A strain gauge is a type of electronic sensor used to measure force or strain (big surprise there). They are made of an insulating flexible backing with a metallic...
$3.95
In Stock
Overhead shot of an assembled 14-segment LED backpack, emitting the follow text in yellow LEDS: "AdaFruit 14-Segment Backpack"
Display, elegantly, 012345678 or 9! Gaze, hypnotized, at ABCDEFGHIJKLM - well it can display the whole alphabet. You get the point. This is a nice, bright alphanumeric display that...
Out of Stock
Angled shot of a green 16mm illuminated pushbutton.
A button is a button, and an LED is a LED, but this LED illuminated button is a lovely combination of both! It's a medium sized button, large enough to press easily but not too big...
$1.50
In Stock
Angled shot of a blue round 16mm illuminated pushbutton.
A switch is a switch, and an LED is an LED, but this LED illuminated button is a lovely combination of both! It's a medium sized button, large enough to press easily but not too...
$1.95
In Stock
1 x M4 Screws
M4 screws
1 x Food storage container
2.6 quart storage container

This guide was first published on Jul 26, 2022. It was last updated on 2022-07-26 17:17:31 -0400.

This page (Overview) was last updated on Sep 08, 2022.

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