# No serial library Processing for smartphone. Help

**URL:** <https://discourse.processing.org/t/no-serial-library-processing-for-smartphone-help/29870>\
**Category:** Processing for Android\
**Created:** [May 5, 2021, 9:34am UTC](https://discourse.processing.org/t/no-serial-library-processing-for-smartphone-help/29870 "2021-05-05T09:34:04Z")\
**Posts on this page:** 1\
**Showing post:** 77

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**Author:** ![jafal](https://yyz2.discourse-cdn.com/flex036/user_avatar/discourse.processing.org/jafal/32/19112_2.png) [@jafal](https://discourse.processing.org/u/jafal)\
**Post date:** [May 8, 2021, 11:45pm UTC](https://discourse.processing.org/t/no-serial-library-processing-for-smartphone-help/29870/77 "2021-05-08T23:45:17Z")

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read this link it is cover Bluetooth communications

> [@Android Bluetooth to Arduino and vice versa](https://discourse.processing.org/t/android-bluetooth-to-arduino-and-vice-versa/26578):
>
> hi all i made 2 sliders sending values to arduino i want to use same in android mode and control arduino via bluetooth using ‘ketai’ library and i need to know how import controlP5.\*; import processing.serial.\*; ControlP5 cP5a; ControlP5 cP5b; Serial arduino; void setup() { size(350,120); printArray(Serial.list()); arduino = new Serial(this, Serial.list()[0], 9600); cP5a = new ControlP5(this); cP5a.addSlider("CYCLE\_TIME", 999, 1999,999, 10, 10, 255, 35); cP5b = new Contro…

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