Picture of Artemis & Apollo: Dancing with Arduino and light detection
According to Ancient Greek mythology, Artemis and Apollo were immortal twins born ages ago on a rocky island in the Aegean Sea. Artemis, her hunting bow poised and fleet feet padding the forest floor, reigned as Goddess of the Moon. Her twin brother, Apollo, strummed his harp and recited poetry from his throne as God of the Sun.  Using an Arduino UNO microcontroller and a simple photo resistor (sensor), you can recreate this mythological pair as elegant figurines that dance according to their divine preference. Apollo, ever dazzling, dances in the light of day, while Artemis, forever fierce, dances in the shadow of night. 

A half-opaque, half-transparent acrylic rotates at the top to the model, creating a varying input of light for the photo resistor light sensor housed on the back of the eagle. When the transparent acrylic half is above the sensor, the light is detected and the Arduino activates the motor for the Apollo figurine. When the opaque acrylic half is above the sensor, no light is detected and the Arduino activates the motor for the Artemis figurine.

This project utilizes simple gear and cam machinery paired with stepper motors to move two wooden figurines. The actions of the motors are controlled by an Arduino UNO that uses a photo sensor to detect varying light input.

This project began as an assignment to integrate Arduino technology with the tradition of moving automata in the Things That Think course by Ann and Mike Eisenberg at the University of Colorado Boulder. 

I love this! great work!
ttt_jjr (author)  amandaghassaei2 years ago
thank you soooooooooo much! :D
ynze2 years ago
Pretty cool project for a maiden Instructable! Cheers!
ynze ynze2 years ago
PS & suggestion: post the video in the introduction of the I'ble. It's very instructive on what you're about to make. And not all people scroll down to step 18...
ttt_jjr (author)  ynze2 years ago
Thanks for the tip! Updated Step 1 with video.