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by fullstop
2107 days ago
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Right, that is exactly how it works. If your signal to the first IC isn't perfect, and it isn't with a 3.3v signal, you can end up with incorrect colors or shifted patterns. As you add more LEDs you have a greater chance of one at the end not lighting up or having incorrect colors throughout the string. 0.7 * 5v == 3.5v, and 3.3 < 3.5. You're out of spec for the part and can't expect it to work reliably. |
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