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Why do we call pixel, "SPI LED"
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Why do we call pixel, "SPI LED"

by Alexis_Engitechs on Mon Oct 16, 2017 3:35 am

Hello,
Why do we call pixel led, SPI led. I think it's because at the begining the technology was a real SPI protocol. But today new product is it always SPI? Is it a new kind of SPI protocol?
Or we just steal use this word from habit?

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Re: Why do we call pixel, "SPI LED"

by adafruit_support_bill on Mon Oct 16, 2017 5:58 am

I have not hear the term "SPI LED" before. We generally refer to them, as digital LEDs. But SPI is not a formal standard and there are many variants. 2-wire (Clock & Data) serial protocols are pretty common. I don't know of any LEDs that implement a full 4-wire SPI interface. Since they are generally write-only devices, there is no need for the MISO line. But I am not aware of any pixels that used a CS/SS line either.

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Re: Why do we call pixel, "SPI LED"

by paulf8080 on Wed Nov 01, 2017 2:19 am

You may be one letter off. Some LCD displays use SPI.

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