Making a real time sensor dashboard using Google App Engine and Raspberry Pi Zero. via omerio
Google App Engine is a Platform as a Service (PaaS) that lets you deploy and run your applications on the Google infrastructure without having to worry about setting up your own hardware, Operating System or server. We will also use Google Charts — free, powerful and simple charting tools — to plot the sensors data into line charts. We have also used Initializr — a HTML5 templates generator — to generate a template for the dashboard which includes Bootstrap, jQuery and other useful frontend resources.
For the hardware we will use the glorious Raspberry Pi Zero, a fully fledged computer smaller than a credit card. The Pi Zero features a 1Ghz single-core CPU, 512MB RAM, mini HDMI and USB and a 40 pin GPIO header. We will connect a few sensors to the GPIO pins and send their data over to Google App Engine. When user views the dashboard both the values and charts on the dashboard update in real time whenever new data arrives from the sensors. The source code for both the App Engine dashboard and the Pi Zero app is in Github with instructions on how to build and deploy each project.
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