Bad pixel in Unicron Hat HD


Just bought one of the new Unicorn Hat HD’s from Adafruit, and ran into a small problem – everything seems to work correctly with the exception of one pixel – the pixel at coordinate (5, 3) (assuming zero-based coordinates with origin at the upper left) seems to be defective as it cannot display any of the red channel of any particular color.

I have attached a picture of the Pi running the example script, you can easily see the green pixel in among the other flame-colored pixels.

What are my choices here?


Yep! That’s a dud. Just drop us a line at if you haven’t already, they’ll sort you out with a replacement.