I am glad that my work has brought to your attention. Thanks for your compliment. It was my honor to chat with the master of 3pi robot.
Actually, I made my first micro mouse back in 1984 and attended the very first micro mouse competition in Taiwan. Of course, I did not make it. My mouse died in the middle while searching the shortest path. Ever since of then, I kept my mouse in dream untill I found the pololu 3Pi robot. Thanks to Pololu, my dream has come truth.
In term of your questions, yes, I use the same motor 30:1 micro metal gearmotors that the 3pi shipped with. I was a little worry if the motors were stong enough since I’ve changed to a pair of bigger wheels. Guess what, the result is just as good as you can see in the video.
As to the I/O, there is no difficult at all. I disconnect the build-in 5 reflect sensors, use 4 of them for wheel encoder, use the last one and PD7 as left and right digital sensor, PD5 as front sensor. In addition, I use two ADC converter as 45 degree analog distance sensors. The mouse seems pretty stable after the fine tunning and run the maze successfully almost every time.
I think my mouse is ready to try a bigger maze. I will surely uoload the video when it was done.
Finally, I must say it again, good job and well done Pololu. I believe Pololu will have a bright future in no time. I only wish I had the same opertunity to work with this excellent company and the talent people like you when I was younger.
Keep in touch.