digity
Posts: 42
Joined: Tue Oct 16, 2012 11:32 pm

simple RGB LED display with RPi?

Tue Jun 03, 2014 9:37 pm

Say I have a 30" x 16" space and I want to arrange a bunch of RGB LED strips horizontally to form a simple display (like a ticker), can I use the Raspberry Pi as a controller for the LEDs so I can display simple graphics and messages? If so, any ideas on how I get started with something like this?

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FLYFISH TECHNOLOGIES
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Location: Ljubljana, Slovenia
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Re: simple RGB LED display with RPi?

Tue Jun 03, 2014 9:48 pm

Hi,
digity wrote:can I use the Raspberry Pi as a controller for the LEDs
Yes, can be done.
digity wrote:any ideas on how I get started with something like this?
With protocol... try to understand what/how data needs to be send in order to display what you'd like to.
There are few distinct protocols implemented in LED strips, which are not compatible between each other. Consequently, "one size fits all" is not applicable here.

If I were you, I'd pick LED strip with SPI protocol. There are tons of code, examples and explanations and you can find all needed information for SPI.
Be aware that uncle Google is your best friend.


Best wishes, Ivan Zilic.
Running out of GPIO pins and/or need to read analog values?
Solution: http://www.flyfish-tech.com/FF32

digity
Posts: 42
Joined: Tue Oct 16, 2012 11:32 pm

Re: simple RGB LED display with RPi?

Tue Jun 03, 2014 9:59 pm

is a strip that supports SPI-like protocol okay or should I steer clear of those?

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FLYFISH TECHNOLOGIES
Posts: 1750
Joined: Thu Oct 03, 2013 7:48 am
Location: Ljubljana, Slovenia
Contact: Website

Re: simple RGB LED display with RPi?

Tue Jun 03, 2014 10:04 pm

Hi,
digity wrote:is a strip that supports SPI-like protocol okay or should I steer clear of those?
SPI is the easiest one to implement... go with it.


Best wishes, Ivan Zilic.
Running out of GPIO pins and/or need to read analog values?
Solution: http://www.flyfish-tech.com/FF32

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DeeJay
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Location: East Midlands, UK

Re: simple RGB LED display with RPi?

Wed Jun 04, 2014 6:41 am

How To Ask Questions The Smart Way: http://www.catb.org/~esr/faqs/smart-questions.html
How to Report Bugs Effectively: http://www.chiark.greenend.org.uk/~sgtatham/bugs.html

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