Great, simple, and Resourceful!
What's that board besides the Nano? Nice little robot, please more info about the whole thing :-) oh yeah...a video would be great!!! :-)
The red board is a SparkFun Powercell that steps up the LiPo to 5v and also charges it via USB. The video is on this page, is it not showing up for you?
Yep, my bad. I did not launched my VPN to see the page...no youtube here in China. The voltage booster is a nice idea, especially to charge the battery. Well done!