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I'm building a TV Ambilight using a Raspberry Pi and 2812B LED strip. First draft schematic below.

Few questions:

  1. I intend to keep the strip connected and bend them around the TV and solder power injection into all four sides. Should I cut the 5V trace (highlighted in yellow on the schematic zoom) where I'm adding power injection or leave them connected? What's the impact of this choice?
  2. Is it safe to daisy chain a few 5 lead Wago connectors for the power distribution?
  3. Similar to #2, is it safe to connect the resistor, capacitor, and inline fuses via Wago connectors?
  4. I'm planning on using 4 amp slow blow fuses on the 3 amp sections and 6 amp slow blow fuses on the 5 amp sections - is this appropriately sized?
  5. Is 18 AWG sufficient? I calculated the voltage drop and it's on the order of a few percent for the length of wire I'm running. I've read these LEDs exhibit the same brightness from ~4.2-5V
  6. Any concerns with powering the Pi, HDMI-to-AV, and HDMI Splitter from the same power source as the LEDs?
  7. Is the capacitor sizing and location sufficient/correct, or would you recommend adding a capacitor at each injection point?

Thank you!

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Schematic Zoom on LEDs:

enter image description here

Electrify
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  • Data sheet for the LED strip please. – Andy aka Aug 02 '20 at 17:00
  • I'm not sure one exists. Here is the LED strip: https://www.amazon.com/CHINLY-Individually-Addressable-Waterproof-waterproof/dp/B01LSF4Q00 – Electrify Aug 02 '20 at 22:29
  • [What to check for when buying an electronic component or module](https://electronics.stackexchange.com/questions/504044/what-to-check-for-when-buying-an-electronic-component-or-module) – Andy aka Aug 02 '20 at 22:45
  • The LED itself is fairly ubiquitous. Here is its data sheet: https://cdn-shop.adafruit.com/datasheets/WS2812B.pdf As for the strips, they're sold by various Chinese suppliers on Amazon - I've yet to see a data sheet for one. I would love the opportunity to purchase 2812b LED strips with a data sheet, but this is what I've got. – Electrify Aug 02 '20 at 23:13

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