“Stage a creative gift hunt all around your home with Bluetooth LE tracking ornaments! Circuit Playground Bluefruit boards can hone in on the proximity of other boards broadcasting their own signal including color coding! The stronger the signal, the more NeoPixels light up. All coded with CircuitPython.
The more the merrier here! Get together with some friends or a whole classroom full of Circuit Playground Bluefruits. You’ll need at least two CPBs to test the signal strength measurment aspect of this project, and three or more to grab the hidden colors.”