March 2017
Beginner to intermediate
422 pages
8h 4m
English
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Heartrate monitoring wearable device
The Raspberry Pi Zero is small enough that you could bring it with you, power it, and attach monitors without the need to be directly connected to anything. Using the MQTT protocol, we can communicate whenever the network is available, as long as we have a running broker available.
Getting ready
You'll need your Raspberry Pi Zero running Raspbian, an MCP3008 ADC, and a Pulse Sensor. A popular and inexpensive open source pulse sensor is available at http://pulsesensor.com/.
This is really another recipe that could use its own Raspberry Pi; with a small USB battery pack, this would be easy to incorporate into a wearable to keep track of your pulse throughout the day.
If you want to publish to your OpenHAB MQTT broker, ...
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I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
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I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.