文件名称:arduinodemux
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Arduino Demux
An analog / digital multiplexer like the CD74HC4067 (mux for short) can help multiply the amount of pins you have, and it is insanely easy to connect to your arduino or other microcontroller
The CD74HC4067 is a 16-Channel Analog Multiplexer/Demultiplexer. It is available in a breadboard-ready DIP package, or, if you are as addicted to breakout boards as I am, SparkFun offers a breakout board SSOP version. What it allows you to do is use 4 digital pins, to control the flow of one pin to 16 others. It can actually be used in either direction, and even with serial or other digital interfaces. For this tutorial we are just going to read the value from 16 pots because buying 16 analog sensors for this would have been overkill.
An analog / digital multiplexer like the CD74HC4067 (mux for short) can help multiply the amount of pins you have, and it is insanely easy to connect to your arduino or other microcontroller
The CD74HC4067 is a 16-Channel Analog Multiplexer/Demultiplexer. It is available in a breadboard-ready DIP package, or, if you are as addicted to breakout boards as I am, SparkFun offers a breakout board SSOP version. What it allows you to do is use 4 digital pins, to control the flow of one pin to 16 others. It can actually be used in either direction, and even with serial or other digital interfaces. For this tutorial we are just going to read the value from 16 pots because buying 16 analog sensors for this would have been overkill.
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arduinodemux.c