# I added Buttons for Fan On/Off on Processing

**URL:** <https://discourse.processing.org/t/i-added-buttons-for-fan-on-off-on-processing/12970>\
**Category:** Electronics (Arduino, etc.)\
**Created:** [July 25, 2019, 1:42pm UTC](https://discourse.processing.org/t/i-added-buttons-for-fan-on-off-on-processing/12970 "2019-07-25T13:42:02Z")\
**Posts on this page:** 1\
**Showing post:** 24

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**Author:** ![kll](https://yyz2.discourse-cdn.com/flex036/user_avatar/discourse.processing.org/kll/32/964_2.png) [@kll](https://discourse.processing.org/u/kll)\
**Post date:** [July 26, 2019, 10:59am UTC](https://discourse.processing.org/t/i-added-buttons-for-fan-on-off-on-processing/12970/24 "2019-07-26T10:59:31Z")

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> [@Murphy](#):
>
> Can we do for one button? If fan is active, button is green. If fan is inactive, button is red…
> 
> You know codes. How can we do it?

you remember, i give you a code for a toggle button [here](https://discourse.processing.org/t/led-system-turn-on-off/12662/3)

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