Animated indicators (turn signals) with Arduino, FastLED and a WS2812B LED strip.

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I was recently asked how to connect a Arduino to a car lighting circuit to control some LED strips. As there are a number of ways to do that, I thought I'd go through some of my ideas here. This video is a bit more technical and less flashy than the last few, so if that's not you're thing you can skip this one!

GitHub page for schematics and code:
Falstad circuit simulator:
More details on optocouplers:

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00:00​ - Intro
01:30 - Potential divider
03:14 - Zener diode
04:37 - Schottky diode
05:22 - Optocoupler
07:19 - Final schematic
08:35 - Hardware build
09:31 - Testing
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