September 2017
Intermediate to advanced
206 pages
4h 34m
English
Content preview from Intelligent IoT Projects in 7 Days
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Input interfacing
An input interface is a module that is used to get input from users. Input interfacing is applied to vending machines in order to have user interaction. Users can select a product that they want to buy. Each product has labels so users only select a product from the input interface by pressing the product label.
A simple input module is the Membrane 3x4 Matrix Keypad from Adafruit: https://www.adafruit.com/product/419. This module provides 3x4 inputs that Arduino or Raspberry Pi can read. You can see the Membrane 3x4 Matrix Keypad here:
I also found another input from Banggood. It's a 4x4 Matrix Keypad that is made with buttons. ...
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