[Tom Line]

Match Marking and quality control can help you.

We've had problems with tubing in the past - some tubing is harder than others, some softer, and it all depends on what supplier you purchased it from. We've thrown out batches of tubing from certain suppliers.

Back to the marking. I would have someone be put in charge of checking ever single connection on the robot. Have them pull (HARD) on every pneumatic tubing connection. If it passes put a mark on it with a green paint pen.

Likewise, do the same with electrical connections. All of our electrical connections get hot glued to the robo-rio. Our biggest problems have come from in-line splices, especially where we have used 2 pin servo connectors. Even though we tape them, they can be finicky if you are doing the crimping and assembly of the connectors yourself.