For my last #TechWednesDay of 2019 at SixNationsPolytechnic I wanted to leave the Students with something they can take home at the end of our class. I remembered that we had the PlayBulbs LED candles form last year so I came up with this little hack to turn the candle into a light for a hat/toque to be visible at night. Here the fished project (Hack) an App controlled Hat LED.
here http://markusvankempen.wordpress.com
as well in the pdf
Enjoy Markus