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WS2812 bảng dữ liệu(PDF) 46 Page - Raspberry Pi Holdings PLC

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nhà sản xuất  RASPBERRY-PI [Raspberry Pi Holdings PLC]
Trang chủ  https://www.raspberrypi.com/
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I need to power LOTS of NeoPixels and don’t have a power supply that large. Can I use several
smaller ones?
Maybe. There are benefits to using a single supply, and large power supplies are discussed below. “Non-optimal”
doesn’t necessarily mean “pessimal” though, and we wouldn’t discourage anyone from using what resources they
have.
If you go this route, the key is to have all of the ground pins among the strips connected in common, but the +5V
from each power supply should be connected only to one length of NeoPixels — those should
not all be joined.
Every power supply is a little different — not
precisely 5 Volts — and this keeps some from back-feeding into others.
© Adafruit Industries
https://learn.adafruit.com/adafruit-neopixel-uberguide
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