To Develop a 3D Printed Myoelectric Prosthetic Arm or Robotic Arm to Control Hand Movements.
Working principle:
The controlling of prosthetic arm is based on Electromyography sensor module, which is controlled by another hand by wearing the band.
Step-1: Electromyography sensor (EMG) is connected to dry electrode and further, the dry electrode is attached to bicep muscle.
Step-2: EMG sensor will detect the moment of the muscle and produce some reference value depending on the EMG signal received on the sensor.
Step-3: the produced reference value if filtered and amplified, then amplified signal is fed to microcontroller.
Step-4: The microcontroller uses the Second order Digital IIR Butterworth Band-Pass filter, which produces frequency and envelop value.
Step-5: Using the envelop value servo rotation is given. Rotation signal is given for 6 different servo motor are used wrist moment and fingers moment of prosthetic arm.
Step-6: servo motor will rotate at angle of 90º and these servo motors are connected to the fingers of prosthetic arm using the fishing wires.
Step-7: servo angle calculations, Taking Calculations of Folding and Relaxing Hand, Let say Folding hand is 20 and Relaxing hand is 10, Then the difference between both Results is 10.