This weekend, I finally installed my first mod on my Tron Pro. I added the moving recognizer. Here is a glimpse of what it looks like (sorry for the crappy video, I will make a cleaner one once I've reinstalled the ramps)
This mod took me a few months to make. Sourcing the parts was very difficult. I was lucky to find the recognizer motor on marco specialties. I struggled finding the last part (the bracket that holds the switches)... I ended up making my own.