SparkFun ToF Range Finder Breakout - VL6180 Boards, Proximity, Sparkfun Originals Security & Surveillance These are small rare earth

These are small rare earth magnets - 3/16" rings

The board incorporates a charging circuit

The Uno R3 works with all existing shields but can adapt to new shields which use these additional pins

If you are interested in reading more about the changes to the IDE

SparkFun ToF Range Finder Breakout - VL6180 Boards, Proximity, Sparkfun Originals Security & Surveillance These are small rare earthThis is the SparkFun Time of Flight Range Finder, a breakout for the VL6180 distance sensor. Unlike most distance sensors that rely reflected light intensity or reflected angles to determine range, the VL6180 uses a precise clock to measure the time it takes light to bounce back from a surface. This affords the ToF Range Finder and VL6180 a great benefit over other methods because it can be much more accurate and more immune to noise. Does this