# Led\_strip.set variables

**URL:** <https://forums.pimoroni.com/t/led-strip-set-variables/19021>\
**Category:** Support\
**Created:** [March 4, 2022, 10:35pm UTC](https://forums.pimoroni.com/t/led-strip-set-variables/19021 "2022-03-04T22:35:05Z")\
**Posts on this page:** 6\
**Page:** 1

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**Author:** ![Joshy-J](https://sea2.discourse-cdn.com/flex016/user_avatar/forums.pimoroni.com/joshy-j/32/8184_2.png) [@Joshy-J](https://forums.pimoroni.com/u/Joshy-J)\
**Post date:** [March 4, 2022, 10:35pm UTC](https://forums.pimoroni.com/t/led-strip-set-variables/19021/1 "2022-03-04T22:35:05Z")

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led\_strip.set\_hsv(a, b, c, d)

Hi! I understand that A is LED number, B is a color, but I don’t know what C and D are. I think D is brightness and it’s between 1 and 0. Any clues on where I could get some info about this?

Thanks!

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**Author:** ![Joshy-J](https://sea2.discourse-cdn.com/flex016/user_avatar/forums.pimoroni.com/joshy-j/32/8184_2.png) [@Joshy-J](https://forums.pimoroni.com/u/Joshy-J)\
**Post date:** [March 4, 2022, 10:44pm UTC](https://forums.pimoroni.com/t/led-strip-set-variables/19021/2 "2022-03-04T22:44:18Z")

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I’m also trying to work out the ampage here and how much amps this consumes, and how that’s affected by the C and D variables, if any information can be given or I can be directed to any resources.

As far as I can see, print(“Current =”, sense.read\_current(), “A”) reads from the controller, and I’m using an external power supply.

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**Author:** ![alphanumeric](https://sea2.discourse-cdn.com/flex016/user_avatar/forums.pimoroni.com/alphanumeric/32/2729_2.png) [@alphanumeric](https://forums.pimoroni.com/u/alphanumeric)\
**Post date:** [March 4, 2022, 11:16pm UTC](https://forums.pimoroni.com/t/led-strip-set-variables/19021/3 "2022-03-04T23:16:53Z")

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A link to the example code would help. And what device your using to drive them.

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**Author:** ![Joshy-J](https://sea2.discourse-cdn.com/flex016/user_avatar/forums.pimoroni.com/joshy-j/32/8184_2.png) [@Joshy-J](https://forums.pimoroni.com/u/Joshy-J)\
**Post date:** [March 4, 2022, 11:37pm UTC](https://forums.pimoroni.com/t/led-strip-set-variables/19021/4 "2022-03-04T23:37:18Z")

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> <https://github.com/pimoroni/pimoroni-pico/blob/main/micropython/examples/plasma2040/rainbow.py>

The code is here, but (forgive my lack of python terminology and knowledge) the function is not available to me because it’s from a module. I don’t know where to view that function. It’s a plasma2040.

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**Author:** ![alphanumeric](https://sea2.discourse-cdn.com/flex016/user_avatar/forums.pimoroni.com/alphanumeric/32/2729_2.png) [@alphanumeric](https://forums.pimoroni.com/u/alphanumeric)\
**Post date:** [March 5, 2022, 9:47am UTC](https://forums.pimoroni.com/t/led-strip-set-variables/19021/5 "2022-03-05T09:47:33Z")

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There is some info here, not sure it helps though?  
[pimoroni-pico/README.md at main · pimoroni/pimoroni-pico (github.com)](https://github.com/pimoroni/pimoroni-pico/blob/main/micropython/modules/plasma/README.md)

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<div class="post-metadata">

**Author:** ![Joshy-J](https://sea2.discourse-cdn.com/flex016/user_avatar/forums.pimoroni.com/joshy-j/32/8184_2.png) [@Joshy-J](https://forums.pimoroni.com/u/Joshy-J)\
**Post date:** [March 5, 2022, 10:49am UTC](https://forums.pimoroni.com/t/led-strip-set-variables/19021/6 "2022-03-05T10:49:24Z")

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Now I look at it, I guess it’s probably Hue, Saturation and Value, where value is brightness? I would guess. I will have to do some of my own experiments to see how many amps that is.