In this project, you'll visualize all of your Azure IoT Hub devices' telemetry data on a Raspberry Pi-powered display. The Raspberry Pi runs Python code combining Azure's Python SDK and Blinka, the CircuitPython compatibility library for single-board computers running Linux. The code shows three different ways to retrieve data from IoT Hub with Python: a built-in endpoint, the Azure REST API and an Azure Device Twin.

IoT Hub is one of the two IoT options from Azure. It allows for two-way communication, which makes this project possible. It can be more complicated to setup and configure than IoT Central, but this guide will walk you through everything you need to get up and running.

The Raspberry Pi dashboard uses the Blinka_Displayio_PyGameDisplay library to utilize displayio elements over HDMI rather than a discrete display over I2C or SPI.

The dashboard updates every time a device sends telemetry data to IoT Hub. It also logs the last device to check-in with a timestamp so you always know the connection status of your devices.

By using a dashboard, you have a centralized place where you can easily visualize your various devices' status at a glance. That way you can place your devices exactly where you want them around your space.

Prerequisite Guides

Parts

Angled shot of Raspberry Pi 4
NOTE: Due to stock limitations we may only be able to offer refunds or store credit for Pis that are defective, damaged or lost in transit.The Raspberry Pi...
Out of Stock
Adafruit ESP32-S2 TFT Feather powered on by a USB- C power source displaying the product tittle in a red, yellow, green, white and blue.
We've got a new machine here at Adafruit, it can uncover your deepest desires. Don't believe me? I'll turn it on right now to prove it to you! What, you want unlimited...
$24.95
In Stock
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
Angled shot of Adafruit SCD-40 - NDIR CO2 Temperature and Humidity Sensor.
Take a deep breath in...now slowly breathe out. Mmm isn't it wonderful? All that air around us, which we bring into our lungs, extracts oxygen from and then breathes out carbon...
Out of Stock
Angled shot of BME688 sensor breakout.
The long-awaited BME688 from Bosch gives you all the environmental sensing you want in one small package. This little sensor...
$19.95
In Stock
Angled of of JST SH 4-Pin Cable.
This 4-wire cable is 50mm / 1.9" long and fitted with JST SH female 4-pin connectors on both ends. Compared with the chunkier JST PH these are 1mm pitch instead of 2mm, but...
$0.95
In Stock

This guide was first published on Aug 23, 2022. It was last updated on 2022-08-23 15:00:36 -0400.

This page (Overview) was last updated on Sep 10, 2022.

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