I'd LOVE a way to place a sensor on the blue pneumatic tank that would reply with a 1 if the tank was 'charged' or a 0 if it's not 'charged'. Any way to do this you think? I'm picturing something that would go on one end of the tank between the tank (...) (24 years ago, 9-Feb-01, to lugnet.technic, lugnet.robotics)