grajohnt
Published © CC BY

Halloween Greeting Talking Triceratops Skull

Make your Echo Dot a lot more interesting than a hockey puck.

IntermediateFull instructions provided4 hours5,135
Halloween Greeting Talking Triceratops Skull

Things used in this project

Hardware components

Animatronic Triceratops Skull
×1
Echo Dot
Amazon Alexa Echo Dot
You can pick them up refurbished for cheaper, as well!
×1
Arduino UNO
Arduino UNO
×1
Adafruit Motor Shield
I used an old version 1 that I had laying around - version 2 is a better choice, due to the availability of breadboarding space for the audio interface.
×1
Speaker: 3W, 8 ohms
Just about any small speaker will do, to be honest.
×1
Audio Amplifier 5V
×1
3.5mm TRS splitter cable
×1
3.5mm TRS male screw terminal adapter
...for the truly lazy like me!
×1
Motion Sensor
×1

Story

Read more

Schematics

Arduino Audio Interface

Shamelessly stolen from here, and not actually working properly! https://forum.arduino.cc/index.php?topic=476900.0

Code

Arduino Code

Modified from the Animated Billy Bass project here: https://www.instructables.com/id/Animate-a-Billy-Bass-Mouth-With-Any-Audio-Source/

Credits

grajohnt

grajohnt

2 projects • 3 followers
Geologist and Maker. Founder Member of the Guild of Makers. I tend to like making absurd things, rather than practical ones.

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