This is my Xdroid’s Medium-Duty Robotic Gripper, designed for applications where gripping/holding/lifting something is needed. I designed them to support both Standard-Size servo’s as well as the HiTec Waterproof servos (slightly larger than standard size).
This gripper is designed with touch-sensitivity in-mind, with a specially-designed hand/paddle model combo that allows you to pancake an Adafruit Industries 1.5″ x 1.5″ Force Sensitive Resistor inside safely ; adafruit.com/products/1075 ; The paddle design ensures that the force is sensed regardless of where the paddles grip an object. 🙂
This model requires two Standard size servos, I have not completed the version in which both paddles are controlled by one servo, and a standard-size servo at regular torque might have problems just actuating the gripper as it is.
I recommend a high-torque metal gear standard-size servo, like the one’s Adafruit sells.
The models in this thing are oriented in the direction that I recommend you print them – with the proper face-down. To make a complete Medium-Duty Gripper, you will need to print some models multiple times while other models you will only need to print once. The instructions will detail this out.
I have plans to modify and improve this further!
Featured Adafruit Product
Standard Size – High Torque – Metal Gear Servo: This high-torque standard servo now comes in a metal-gear flavor, for extra-high torque (10 kg*cm!) and reliability! It can rotate approximately 180 degrees (90 in each direction). You can use any servo code, hardware or library to control these servos. Good for beginners who want to make stuff move without building a motor controller with feedback & gear box. Comes with a bunch of plastic horns, as shown. We now carry the Tower-Pro MG-995, they are very nice, high quality servos, excellent for use in robotics. (read more)
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