This was a free time activity I did last semester as part of the Interactive Robotics Lab (formerly known as Edwin). My teams project for the semester was to develop a Sudoku playing robot using the robotic arm Edwin (pictured below).

Some of the code I developed for this project was a box tracking program (based in opencv) that would locate and track the Sudoku board. This code did not end up in the final product, so I thought I would show it here. You can check out a demo of the box tracking below.
Finally, I would like to give some big props to Khang and Sherrie for doing so much good work over the semester!
As always, if you have any questions, feel free to reach out below.