Repaired files from: Mad Mare Studio's Medium-Duty Robot Gripper http://www.thingiverse.com/thing:51403 -Printed with 0.4mm layers on a Makerbot Replicator 2x -black ABS -117°C build plate temp -230° extruder temp I re-designed the drive gears so that I could squeeze in a standard sized servo arm and screw in tightly onto the servos (files provided). I used two standard sized servos (http://www.pololu.com/product/1056). I mounted two pressure sensors (http://www.pololu.com/product/1645) and wired all (10kOhm pull-down resistors for each sensor) to the Pololu Maestro Servo Controller (http://www.pololu.com/product/1350). Furthermore i added a variable resistor to the build (also connected to the servo controller). This for example can be used to change the servos positions or adjust the maximal allowed pressure. All the signals can be processed on the servo controller itself.