Your pixels are your biggest load. So you want to wire power from your battery pack directly to the pixels - not through the processor. 22AWG wire has a resistance of about 0.016 ohms per foot or .056 ohms for your 3.5 foot run. Even at a 10A current draw, that is only a 0.56v drop. (Actually less because you also have the power and ground traces on the strip connected in parallel).
So you would have a 3.5 foot run of power and ground, then tap off for a connection to the first pixel, the mid pixel and the last pixel. If you have enough room, you could do 3 separate runs instead for even lower resistance.
Then run power and ground from the first pixel back to your processor.
Power plan with neopixel advice
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Re: Power plan with neopixel advice
Ah okay this makes perfect sense now.
Bill your knowledge Is vast and amazing! Thank you the valuable Information!!!!
Bill your knowledge Is vast and amazing! Thank you the valuable Information!!!!
Please be positive and constructive with your questions and comments.