Datasheet
For other Arduino boards with a separate +5V DC power supply for the NeoPixels: connect
the +5V input on the strip to the + (positive) terminal on the power supply (don’t connect to the
Arduino), DIN to digital pin 6 on the Arduino, and – (minus or GND) on the strip must connect to
both the minus (–) terminal on the DC supply and a GND pin on the Arduino (there are usually
several — any will do).
The 144 pixel strips are so tightly packed, there’s no room for labels other than –, + and the data
direction arrows. Data is the un-labeled pad.
The order of the three pins can vary between different strip densities and batches. ALWAYS
use the labels printed ON THE STRIP. Look closely, NEVER blindly follow a NeoPixel strip
wiring diagram; it might be based on a different strip type!
When connecting NeoPixels to any live power source or microcontroller, ALWAYS CONNECT
GROUND (–) BEFORE ANYTHING ELSE. Conversely, disconnect ground last when
separating.
Adding a ~470 ohm resistor between your microcontroller's data pin and the data input on the
NeoPixels can help prevent spikes on the data line that can damage your first pixel. Please
add one between your micro and NeoPixels!
© Adafruit Industries https://learn.adafruit.com/adafruit-neopixel-uberguide Page 16 of 39