There's an abundance of fun, well-made, and inexpensive animatronic holiday gizmos available at hardware stores, big-box stores, specialty shops, and online. They work great right out of the package, but sometimes you're looking for that extra bit of personalization, so this guide is all about swapping out the brains of animatronics with your own CircuitPython-based controller.
Why do it? Besides "for the fun of it", building your own animatronic controller allows you to switch out any audio files you like, fine tune the animation, and even introduce new capabilities such as wireless Bluetooth operation, ultrasonic distance sensors, and more.
Only modify battery-powered/low-power DC devices. If your animatronic runs on AC mains power just leave it alone unless you're experienced with high-voltage electronics!
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