October 2019
Intermediate to advanced
350 pages
9h 5m
English
Content preview from Hands-On Internet of Things with MQTT
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Project 3 – a smart productivity cube
The smart productivity cube is a cube with a custom-built orientation sensor. Using four tilt switches, we will be able to sense whether the cube is resting either on its bottom, top, or any of its other sides. By assigning tasks to each side of the cube, you can use it as a stopwatch for different activities; for example, to time how long you spend learning MQTT, watching TV, or working on project X:
- Tilt switches: Tilt switches are very simple components that are handy if you want to sense the orientation of your prototype. Inside the little cube is a metal ball that closes an electrical contact. If you turn it upside down, the ball moves to the other side (due to gravity), and therefore opens the ...
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