How to use a capacitive touch sensor for Arduino
Arduino Basics: MPR121 Capacitive Touch Sensor
In this video we set up and use the MPR121. This board communicates with your Arduino via I2C, but is only 3.3V. So if you are not using a 3.3V Arduino, you will need to use a level shifter or the MPR121 will not work.
We use the Bare Conductive MPR121 library, you can download it here: https://github.com/BareConductive/mpr121
In this library, we need to use the IRQ pin. Attach it to Arduino D4.
The MPR121 board is available here: http://amzn.to/2p9qQab A pair is $7
The level shifter board is available here: http://amzn.to/2pZ84Xc a pair is $1.19
-~-~~-~~~-~~-~-
Please watch: "Diodes: The basic building block of all digital circuits"
https://www.youtube.com/watch?v=Lyii5I30gw0
-~-~~-~~~-~~-~-
Видео How to use a capacitive touch sensor for Arduino канала learnelectronics
In this video we set up and use the MPR121. This board communicates with your Arduino via I2C, but is only 3.3V. So if you are not using a 3.3V Arduino, you will need to use a level shifter or the MPR121 will not work.
We use the Bare Conductive MPR121 library, you can download it here: https://github.com/BareConductive/mpr121
In this library, we need to use the IRQ pin. Attach it to Arduino D4.
The MPR121 board is available here: http://amzn.to/2p9qQab A pair is $7
The level shifter board is available here: http://amzn.to/2pZ84Xc a pair is $1.19
-~-~~-~~~-~~-~-
Please watch: "Diodes: The basic building block of all digital circuits"
https://www.youtube.com/watch?v=Lyii5I30gw0
-~-~~-~~~-~~-~-
Видео How to use a capacitive touch sensor for Arduino канала learnelectronics
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