Compact compressor module with valve control 8/27/2002 Mario E. Patiņo -cybernesto- These are the building instructions for a compact compressor module. Depending on the direction of movement of the motor the valve can make a piston go up or down. It was inspired in the compressor module of the Ultimate Builders Set. I made some modifications to make it smaller (and lighter). For everyone interested in building a robot with a pneumatic grabber or some other pneumatic system this module can be very handy. It's free to be used by anyone that finds it useful. Just mention where did you take the design. I would be glad to know about any use/improvement that you can make of it. Thanks to: Kevin L. Clague for his wonderful utilities LPub and LSynth Philippe Hurbain for his useful Rubber Belt generator Michael Lachmann for MLCAD Caroline for her support, and for accepting a boyfriend who still plays with bricks all the LEGO community for the incredible work around the world, greetings from a venezuelan!. For comments, recommendations or corrections please contact me cybernesto@excite.com