Arduino Forum

Using Arduino => LEDs and Multiplexing => Topic started by: joachimpetersen on Sep 11, 2013, 10:32 pm

Title: Control Led Strip (not-RGB)
Post by: joachimpetersen on Sep 11, 2013, 10:32 pm
Hello, I bought an Green Led Strip (http://www.ebay.com/itm/380609657046?var=650086344707&ssPageName=STRK:MEWNX:IT&_trksid=p3984.m1439.l2649)

Do you guys have any idea on how I can control the individual lights on it?
Title: Re: Control Led Strip (not-RGB)
Post by: baselsw on Sep 11, 2013, 11:14 pm
You can't.. These strips don't have any control chip on them.. It's just a bunch of leds connected in parallel..
Title: Re: Control Led Strip (not-RGB)
Post by: joachimpetersen on Sep 11, 2013, 11:23 pm
I thought all of these led strips had chips so they were all compatible with an controller(for led strips)

http://www.ebay.com/itm/5M-RGB-SMD-3528-300LED-Strip-Light-Waterproof-24Key-Remote-Control-2A-Power-/331007439187?pt=AU_Lighting_Fans&var=&hash=item4d1194b153
Will this then be able to be controlled with individual lights?
Title: Re: Control Led Strip (not-RGB)
Post by: Paul__B on Sep 11, 2013, 11:57 pm
Neither of those strips has any form of individual control over LEDs.  A clue is that they operate from 12V and that they have a cut point every three LEDs as they are in fact groups of three LEDs in series with a resistor for each group.

You may also be misled by some of the pictures in the second link showing alternating colours along the strip.  Closer inspection reveals that those strips consist of LEDs of alternating single colours placed along the strip so that the colours are still fixed.  The controller allows you to choose and vary/ sequence the colour for the entire strip at once.
Title: Re: Control Led Strip (not-RGB)
Post by: fungus on Sep 12, 2013, 02:35 pm

I see somewhere that the DMX controller can program to control each LED.


Nope. At best it can dim them.