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Independent LPD6803 RGB Strips on one Arduino
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Independent LPD6803 RGB Strips on one Arduino

by faceless105 on Tue Feb 02, 2016 4:25 pm

I picked up 5m of LPD6803 RGB LED Strips and have been loving them. I'm currently getting ready to start a project where I want to control 1 meter lengths independently. Programming wise this looks like it should be pretty straight forward.

What does happen to throw me off is the grounding. Specifically, I had a hard time getting these to work initially because I didn't tie the ground with the arduino to the ground from the lights and the power source. I don't fully understand why that was key to these working. For my project of having multiple lengths each with data and clock wires, can I connect all of them grounds? Or will that give my some really strange results?

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Re: Independent LPD6803 RGB Strips on one Arduino

by franklin97355 on Tue Feb 02, 2016 7:18 pm

The ground in electronics is used for a "return path" that all voltages and signals are referenced to. If you don't have a common ground you have common point of reference.

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