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They have a color picker
Body size 27mm x 59mm x 13
Diameter (thickness): 4
and on Win8 or OS X you'll have to sort through a huge pile of native Bluetooth APIs and development tools that often require an annual paid license and specific license terms to access
The charger circuitry and 2 AA batteries fit into an small space such as an Altoids gum or mint tin
Adafruit DotStar LED Strip - APA102 Cool White - 144 LED/m - ~6000K - One Meter updated 11-24 They have a color pickerMove over NeoPixels, there's a new LED strip in town! These fancy new DotStar LED strips are a great upgrade for people who have loved and used NeoPixel strips for a few years but want something even better. DotStar LEDs use generic 2 wire SPI, so you can push data much faster than with the NeoPixel 800 KHz protocol and there's no specific timing required. They also have much higher PWM refresh rates, so you can do Persistence of Vision (POV) and have