The controller is an early version of the BlueSpider, which works with ProgramBlue made by dsfrobots. The valve bank is a special board designed by Atari for their PTT robots. I have a later revision of the board which doesn't include the audio passthrough. I think it was just called the valve board.
The arms go side to side, not towards and away, so it'd be kind of impossible to push and pull doors open and close. Plus his body turns left and right, so he can't hold on to a door anyway. The reason his arms are the way they are is that he's supposed to have an accordion in his hands that he plays during the show, but after years of retrofitting no originals of it exist anymore. I have hopes of one day making one for him, but I have no experience in crafting so it'll take some time.
