Hi Mike: Yesterday I was looking at the Stanford on line classes and found this: Introduction to Haptics (Self-Paced) It has to do with touch sensitive control. They have a couple of 1-dimensional control kits (one where you glue Acryli= c plates together and another that's 3D=20 printed) where a DC motor provides feedback using a custom board from Seeed= Studio and a computer or Arduino. http://hapkit.stanford.edu/ http://www.seeedstudio.com/depot/hapkit-p-1622.html The kit includes a Spark Fun pressure sensor as well as an X-Y magnetic sen= sor to read back the motor shaft position. You could improve on this be making a 2-axis version. Not you can program = the compliance on the control from a brick=20 wall to very springy. Also can add feedback like used in commercial jets where the vibrate the co= ntrol stick to indicate a serious condition. Touch, engineered: Allison Okamura at TEDxStanford TEDxManhattanBeach - Paulo Blikstein - One Fabrication Lab per School: the = FabLab@School project=20 - Big Education Implications that leads to: Transformative Learning Technologies Lab & FabL= ab@School=20 Mail_Attachment -- Have Fun, Brooke Clarke http://www.PRC68.com http://www.end2partygovernment.com/2012Issues.html http://www.prc68.com/I/DietNutrition.html --=20 http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .