Installation of the library is as follows:
- Visit the Adafruit_NeoPixel library page at Github.com.
- Select the “Download ZIP” button, or simply click this link to download directly.
- Uncompress the ZIP file after it’s finished downloading.
- The resulting folder should contain the files “Adafruit_NeoPixel.cpp”, “Adafruit_NeoPixel.h” and an “examples” sub-folder. Sometimes in Windows you’ll get an intermediate-level folder and need to move things around.
- Rename the folder (containing the .cpp and .h files) to “Adafruit_NeoPixel” (with the underscore and everything), and place it alongside your other Arduino libraries, typically in your (home folder)/Documents/Arduino/Libraries folder. Libraries should not be installed alongside the Arduino application itself.
- Re-start the Arduino IDE if it’s currently running.
Here’s a tutorial that walks through the process of correctly installing Arduino libraries.
Install the NeoPixel library and go to File-->Examples-->Adafruit_NeoPixel-->strandtest.
If you cannot find that file in the dropdown menu go back up and reinstall the library.
We do test each pixel in the factory, but you should use this method to test that all three colors (red, green, blue) work on each of your pixels before sewing them into your project!
For GEMMA, you'll need to change the pin number in the Arduino sketch before uploading. Change "6" to "1":
Then upload the sample code to GEMMA by pressing the reset button (the red LED should start pulsing) and clicking the "upload" button in the Arduino software.