The Adafruit 40 NeoPixel Shield lets your Arduino address every single one of the 40 LEDs and set its 24-bit RGB value. The result is a very 53 x 69mm (2.1 x 2.7in.) neat rectangle of bling. These seemingly simple gadgets have triggered an amazing array of creative projects, from watches and compasses to steampunk goggles and more. The shield only uses 1 x digital ouput pin on the Arduino and more NeoPixel shields can be daisy-chained together and still use just that one pin. A 2-pin terminal block is supplied so that you can power the LEDs with an external supply if you intend adding more boards or driving the first one at full white. Adafruit have published a driver library to save you the trouble and let you get on with designing eye catching displays.
Adafruit have a reputation for the quality of their supporting documentation. You will find their Uberguide to NeoPixels and their Best Practices guide invaluable. In particular the Best Practices guide will help you prolong the life of your NeoPixels and help you avoid common mistakes.
Drive 40 NeoPixels with 1 x digital output
24-bits of RGB for each
Can be daisy-chained
2-pin terminal block for external supply
*Customers looking to resell on eBay or Amazon should contact Adafruit directly.
