Vacuum tube bots started in 2015. Zen was the first of the tube bots made from a vacuum tube found at a garage sale. These tubes used to be inside of TVs, Radios, and guitar amplifier. Some guitar amplifiers still use them today. Starting in the 60’s Vacuum tubes started to get replaced by transistors. The same transistors that Zen’s eyes are made out of, along with many other bots.
Sung was the first Lee Bot, in 2016, to have a cable splitter as a head. These splitters come in all different sizes and color. They are used to split cable that connects your TV.