I was just reading on this tutorial on Adafriuit, Best Practices | Adafruit NeoPixel Überguide | Adafruit Learning System It says Place a 300 to 500 Ohm resistor between the Arduino data output pin and the input to the first NeoPixel. The resistor should be at the end of the wire closest to the N…

Neopixel Resistor Question

Grumpy_Mike July 18, 2017, 1:32pm 10

This is what the signal on the data line looks like with and without a resistor.

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