Robots have come a long way in the past few decades — but some of the coolest advances in robotics haven’t come from huge companies or massive university labs. Makers, inventors, tinkerers and builders have been creating some to-die-for robots for years now. Check out some videos of the very best DIY cheap robots.
PET, the Emotional Robot
https://www.youtube.com/watch?v=6iXUCvdh1Q0
This tennis robot
An Arduino-powered hand, built under $200
James, the gas detector
https://www.youtube.com/watch?v=VpaekvrLpmw
