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Adafruit NeoPixel NeoMatrix
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Adafruit NeoPixel NeoMatrix

by HarryOMalley on Sat Aug 03, 2019 5:15 pm

Hello,

The NeoMatrix 8x8s have 7 decoupling capacitors per line of 8 LEDs (missing off the capacitor for each end LED), despite the fact that the LED specifications suggest that you need a capacitor per LED. How is it they still work? I made some boards up of my own doing the same thing, but the final LED on each line was unusable due to too much noise, causing the whole circuit to become basically unusable.
Thanks!

Harry

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Re: Adafruit NeoPixel NeoMatrix

by dastels on Fri Sep 13, 2019 6:05 pm

Some have a cap per pixel, some drop a cap here & there. I'm assuming it's still within tolerance. Capacitance in the wiring/traces itself would play a role as well.

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Please be positive and constructive with your questions and comments.