Raspberry Pi on the IoT
Herd Animals
© Lead Image © Vladimir Sladek, 123RF.com
The Amazon Web Services command-line interface and the Amazon Greengrass IoT Core services read and merge Raspberry Pi sensor data.
One of the things that can be meaningfully connected on the Internet of Things (IoT) is sensors, including temperature gauges. Friends of the Raspberry Pi prefer to use them for their practical exercises, because they are readily available from online stores for small change.
With the help of an API, you can read data from the GPIO ports with a few lines of Python code. The questions then arise: Where do I store the data? Who is evaluating the data, and where?
Moreover, generating an alert with a few additional lines in the Python script works fine on a single Rasp Pi; however, what if several (possibly hundreds) of Pis collect data that developers want to evaluate centrally in one place? In this article, I use Amazon Web Services (AWS) IoT Core and Greengrass with a Raspberry Pi to send a text alert if a sensor registers a temperature out of bounds.
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