Last week I recently built a BEAM symet robot. The robot uses a FLED (flashing led) solar engine because it is powered by a solar cell less than 3v and the motor is more than 3v. the solar engine collects energy and sends it to the capacitors (3) and then the capacitors charge up until they are full, and when they are full they unleash that energy to the motor. The way the robot moves is like a litter jitterbug or “twitchy” thing. My symet is now on YouTube and a tutorial will be put up soon too. Thanks for reading and make sure to leave a comment!