NeoPixel 8 not working when change # pixels

[johnwargo]

I just hooked up a NeoPixel 8 strip to my Arduino Micro. When I run the strand test, everything works great, but when I change the number of pixels from 60 to 8:

Code: Select all

Adafruit_NeoPixel strip = Adafruit_NeoPixel(60, PIN);

to

Code: Select all

Adafruit_NeoPixel strip = Adafruit_NeoPixel(8, PIN);

Nothing works. If I change it back to 60, works like a champ. What am I doing wrong?

[adafruit_support_rick]

Have you modified the strandtest at all? If so, can you post the entire sketch?

[johnwargo]

No, not at all - hooked up the =, - and digital in wires and only made that single line change to the code. Nothing more, otherwise it's the out of the box strand test app.

[pburgess]

Tested on Arduino Micro, I'm not able to reproduce this.

Any other details you can provide might be helpful. Photos of wiring, etc.