May
3
Biotronic Amplifier Project
By karlw
The biotronic amplifier is a human capability enhancement robotic device. It is a reach extending, grip amplifying machine that can be used to handle hazardous materials or grasp objects that are out of reach. The operator uses a trigger to control the opening and closing of the gripper. The positions of the trigger and the motor are tracked using potentiometers and analog to digital converters. The A-to-D converters are located internally on the PIC 16C71 microcontroller. The gripper motor is controlled with an H-bridge made up of two TIP41C NPN and two TIP42C PNP power transistors. The gripper has a 5-inch wide grasp. It sees a lot of use at the makerspace mostly for entertainment.
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That’s cool!~ could you add a small motor to the trigger to give feedback to the trigger? (make it harder to pull based on the resistance in the gripper motor… so you know when you grabbed something, and perhaps can tell the difference between a light grasp and tight grasp)
It would be nice to have some feedback to the trigger. Maybe add a pressure sensors to the gripper or monitor the current draw from the motor. The feedback to the user could also be something like a little pager vibrator motor.