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Forum Index : Microcontroller and PC projects : WS2812 addressing
| Author | Message | ||||
| Tinine Guru  Joined: 30/03/2016 Location: United KingdomPosts: 1646 |
This just seems to be a very cool way to chip-select. Must be a device out there that does this but I havent found it  Craig |
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| chuckallisonusa Newbie  Joined: 04/12/2021 Location: United StatesPosts: 2 |
The ws2812 works in the order it is connected. If you want a certain spot the whole chain is populated with information for blanks until the one you want. If you 8 in a chain you need 8 data sets. |
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Mixtel90 Guru Joined: 05/10/2019 Location: United KingdomPosts: 8304 |
Each WS2812 has 3 shift registers in series, for Red, Green and Blue. As you clock bits in on the input they are clocked out on the output. As each register is 8 bits long you have to clock 24 bits for each WS2812 in the chain. That's why you need to know how many there are - you simply re-write the entire chain to change a single bit because it's actually a single flippin' big shift register. Mick Zilog Inside! nascom.info for Nascom & Gemini Preliminary MMBasic docs & my PCB designs |
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| Tinine Guru Joined: 30/03/2016 Location: United KingdomPosts: 1646 |
Oh I get it but I'm just thinking of the on/off aspect. Imagining a string of addressable opto-couplers, SSRs etc., driven by a single output.  Craig |
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