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Topic: 5m LPD8806 UNO Limitations (Read 830 times) previous topic - next topic

ckeyes

Complete newbie here about to dive into a LPD8806/UNO/Wifi project.

I'm thinking maybe I should have gone with a Mega for the extra memory, but what I'm after is to have
the UNO drive a LPD8806 5m strip with a sketch containing 5 different effects that can be selected
using communications sent to the wifi shield on the UNO.

First question, is this possible, and second, does the UNO have enough memory to handle something
like this?

Many thanks, any input greatly appreciated!

Carl

MarkT

Please don't post several threads on one topic... 

So where's the link to the datasheet for this strip then?
[ I will NOT respond to personal messages, I WILL delete them, use the forum please ]

ckeyes

Couldn't find a data sheet but here's a link to the strip: http://adafruit.com/products/306

Sorry about the dual post.

Carl

KirAsh4

Short answer: yes

Build your effects into functions.  Use the Wifi communications to figure out which effect to display.  The thing to keep in mind is that most of those strips are driven with SPI (using FastSPI).  If your Wifi shield also uses those lines, then you need to do one of two things: either bit bang the strip using different pins (fairly easy to do) or add additional hardware to add a chip select to the strip.  Either way, it's not that hard to do.

ckeyes

Thanks. Hadn't thought about the wifi and SPI. Think I may stick with a USB connection for this
project.

Carl

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