https://www.youtube.com/watch?v=6JUfzMMyTWE
Chris Hannam shared a video of how he uses BlinkStick to indicate moisture. He is using an Arduino hygrometer sensor to change the color of a BlinkStick if it’s not damp enough.
Now even your plants can have fun with BlinkStick! 🙂 Well done Chris!
You can find the bit of code that does the magic on Github: