Physical computing with Raspberry Pi

Difficulty: beginner This tutorial will help you to receive input to your Pi from physical switches and buttons and to debounce if necessary. It will show you how to automatically run a program when a button is pressed (a GO button for a robot, for instance), or use it as part of your program. BACKGROUND: Circuit with current-limiting resistors in place. Diagram from eLinux. When a GPIO pin is set as an inp ...

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Mechanical Pi

As part of the semester topic „Techno Legacy“ David and I decided to focus on pocket calculators. These devices become more and more irrelevant due to the universal integration of their functionality into major digital devices, primarily smartphones. While doing some research on calculators and mathematics, there was no way around the constant number pi. Material: - Screws (M3,M5) - Aluminum plates (0.8mm, ...

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How to build a People Counter with Raspberry Pi and Ubidots

In this simple project we'll use a motion sensor to detect if an object is passing in front of our Raspberry Pi. Then we'll count how many times that happens, and send this value to Ubidots. People counters are typically expensive devices used in the retail industry to understand how shoppers behave. Thanks to Raspberry Pi and Ubidots, we're able to build a functional people counter in a few hours and with ...

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