So, you want lots and
lots of NeoPixels? And you want them for less? Not a problem! Here's a sheet of
Breadboard-Friendly NeoPixel breakouts fresh from the (reflow) oven. Snap them
off as you need 'em and save a pretty penny while you're at it.
This is the easiest way possible to add small,
bright RGB pixels to your project. We took the same technology from our Flora
NeoPixels and made them breadboard friendly, with two rows of 3 x 0.1" spaced
header on each side for easy soldering, chaining and breadboarding. These
ultra-bright LEDs have a constant-current driver cooked right into the LED
package! The pixels are chainable - so you only need 1 pin/wire to control as
many LEDs as you like.
These pixels have full 24-bit color ability with
PWM taken care of by the controller chip. Since the LED is so bright, you need
less current/power to get the effects you want. The driver is constant current
so it's OK if your battery power changes or fluctuates a little.
draws as much as 60mA (all three RGB LEDs on for full brightness white). An
Arduino can drive up to 500 pixels at 30 FPS (it will run out of RAM after
that). Using ribbon cable you can string these up to 6" apart (after that, you
might get power droops and data corruption)