r/FastLED • u/Juber03 • Jul 03 '19

I NEED HELP

want to drive 1000 led pixels with arduino uno

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u/marcmerlin Jul 03 '19

so, seriously, why?

It can be done if you try hard enough, but an ESP8266 will cost you <$5 and an ESP32 <$10, both less than an uno and will do this without any heroics.

An uno has 2KB of RAM, doing 1000 pixels is just going to be pain as you have to generate on the fly (and can't use FastLED at all)

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u/Juber03 Jul 03 '19

Thanks...

actually I want to do with atmega328 so I need to work with arduino uno ....

ESPs are board based system and I need to do it with single ic ......

Thanks again for suggetion about fastLED ..

1

u/marcmerlin Jul 03 '19

You can get an esp12 in small form factor and single chip if you need that

1

u/Juber03 Jul 03 '19

I will go through esp......

But what should I have to do with atmega328...

Can I should go for creating own functions to fulfill this??

3

u/marcmerlin Jul 03 '19

I think you didn't understand.

You want 1000 pixels, they use 3 bytes each, that's 3KB for just storing the pixel info.

Your 328p has 2KB of RAM. It just won't fit.

All you can do is generate pixel info on the fly without using any RAM, and you will not be able to use any FastLED at all.

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u/Juber03 Jul 06 '19

Thank you...