Just modified the bottom gear of the screwless heart gears to fit my old kysan DC extruder motor (which turns very slowly on 5V USB XD)
I'm excited to see other pepole try and print this! If you want the openscad file, let me know!
Print this part,
glue it to a motor of the correct size (37mm diameter 20 mm shaft)
glue the shaft into the center of the heart!
Take a picture of the heart
Upload the picture here after clicking the "I Made One" Link
(the following steps are optional)
Take a video of the rotating heart
Upload to Youtube(or similar free video streaming site)
Post a link in the comments of the picture of your heart that you uploaded after clicking "I Made One"