I just reached the next milestone in this project - getting both sonar sensors to play nice with each other so that I can detect an object (person) in individual or both zones. yay! I took a quick video of the outcome and I hope it serves the purpose of showing from a first-person view how reactive the lighting is getting and how it changes based where the user is in the kitchen. A lot of lessons were learned in dealing with more than one sonar sensor. Thank you's to all the resources I scoured over the past few weeks to pick up the right techniques. More to come!