subrosa shared the SkullGuy Halloween greeter and doorbell effect (Audio FX) on the Adafruit forums:
…Basically it’s a skull that looks at you, says hi, and then beckons you to ring the doorbell. Yes, I’m cheating and using a single “eye” and an eye patch…maybe next year I’ll push it a little further.
PIR sensor notices motion, activates the “eye” (pingpong ball with an adafruit webcam sticker for a pupil), then triggers the audio FX board to play a sound out the speaker, then the neopixel ring activates around my doorbell.
Control is from an Arduino Micro feed with 5v USB, only downside here is that I can’t push the power usage too much further.
In the dark this looks really freaky, especially when I have the eye rotate into position from the back of the skull.
It’s my first project using the Audio FX board, and I got to say it’s awesome! All audio recorded and edited with Audacity in Linux, then exported to OGG format….
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