So I'm connecting a 5v neopixel, just a single one to my Arduino nano. Then someone told me I needed to have a capacitor for it, is that true? I mean as far as I know, it's only good for whenever u have an external power source like a battery to somehow stabilize or stop a too big flow of power?

neopixel and a capacitor.

Topic		Replies	Views
SOLVED: Adafruit neopixel ring and capacitors. General Electronics	6	3235	May 6, 2021
Neopixels with or without Capacitor LEDs and Multiplexing	7	5765	May 6, 2021
Neopixel wiring? General Guidance	26	16743	May 5, 2021
Supply noise from Neopixel PixelStrip Sensors	3	1529	May 6, 2021
P-Channel MOSFET + Capacitor Causes Arduino to Reset General Electronics	11	3749	May 6, 2021