Hey hello, very cool your robots, the first Mimoks were somthing like these guys, and they obtain the energy via the feet like yours. my page was down time ago, my server company close, you can visit www.mimoks.blogspot.com, is the same page, the com.ar jumps to this one. But I was uploading pics in the Facebook page “Mimoks robot toys” and you can add me to your friends “Mimoks usb toys” too.