# LED 5050 GPIO Dashboard

**URL:** https://discourse.nodered.org/t/led-5050-gpio-dashboard/15268
**Category:** Dashboard
**Created:** [8 September 2019 05:34 UTC](https://discourse.nodered.org/t/led-5050-gpio-dashboard/15268 "2019-09-08T05:34:14Z")
**Posts on this page:** 1
**Showing post:** 6

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### Author: ![craigcurtin](https://avatars.discourse-cdn.com/v4/letter/c/94ad74/32.png) [@craigcurtin](https://discourse.nodered.org/u/craigcurtin)
#### Post date: [10 September 2019 23:07 UTC](https://discourse.nodered.org/t/led-5050-gpio-dashboard/15268/6 "2019-09-10T23:07:23Z")

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OK good news then.

Obviously as you seem to be aware controlling colour for the 5050 LEDs is a matter of sending a PWM signal to each of the chips in the module i.e. different PWM frequencies on each of the 3 legs will control the colour.

Now on a Rpi PWM is a little problematic and will probably end up with noticeable flicker as the OS is not realtime and there is no hardware PWM so keep this in mind

Here is a thread that covers much of what you will need to do

> [@Colour Picker RGB to PWM?](https://discourse.nodered.org/t/colour-picker-rgb-to-pwm/2751/8):
>
> Um, well, yes... shows you how much I've used that node. But then I wouldn't actually be answering the question ;\*)

regards

Craig

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