Ok so here's my problem with my doodlebot. The code runs perfectly, however, when the doodlebot begins dancing, the back wheels lift off the ground and stunt the bot from moving fluidly. I realized that when I removed the marker and the cardboard, the doodlebot hopped up and down perfectly which has me thinking that there is a weight distribution problem. What would be a good way to add more weight to the back of my doodlebot, or any other solution you guys can think of would be greatly appreciated, thanks!
Here's a URL for the video of my doodlebot, https://vimeo.com/265116405