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What to do when you just don’t know :: Arduino, ADXL345 triple axis accelerometer and an RGB LED

This lesson discusses what to do when you open an existing program and realize that you simply don’t understand all the stuff that is going on. It also talks about using the ADXL345 triple axis accelerometer breakout board to control the hue of a Red-Green-Blue (RGB) LED.

Here are some links to the SparkFun website for the ADXL345 breakout board and the getting started guide.

ADXL345 Breakout Board

ADXL345 Getting Started Guide


  1. Avatar Oh Baby! on February 13, 2018 at 5:08 pm

    This is exactly what I’m trying to do with the Arduino 9 axis shield .
    BTW, why is there no current limiting resistor used for the RGB LED? Did I miss it or is it not needed?

    • Avatar MICHAEL JAMES on February 13, 2018 at 9:09 pm

      Yes, there should be current limiting resistors with an RGB LED, I left them out for simplicity sake.

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