I am a college student at North Seattle College in their Mechatronics program. I am about to finish up my first robotics course that utilized the ActivityBot 360. I have had a ton of fun with this class. Along the way I got a hold of a LED voltage panel that I decided to connect to my AB360 so that I could see what my voltage of my batteries were when I started using the servos a lot. I used an old toggle switch to wire it into the main power connection under the board. It looks pretty cool and it rather functional.