Designing a 3D-printed EMG bionic hand as a low-cost various to prosthetic limbs

The price of a brand new prosthetic arm can vary from a number of thousand {dollars} to tens of hundreds, placing them out of attain for many individuals. Ahmad Ikram acknowledged this want and determined to design and construct a far cheaper, open supply model that has myoelectric capabilities.

To start this mission, Ikram determined upon utilizing the InMoov 3D-printed arm design from French sculptor Gael Langevin as a consequence of it being simple to assemble. The hand itself accommodates a single wire related to every finger, whereas the opposite finish will get wrapped round a servo motor horn in order that the finger can bend each time the serv strikes. A Myoware muscle sensor is liable for studying {the electrical} alerts generated by muscle contractions and changing them right into a readable analog voltage, which is learn by an Arduino Nano’s analog pin.

This system Ikram created for the Arduino merely takes steady readings from the myoelectric sensor and checks if it above a sure threshold. As soon as it’s, the servos are set to a place for contracting the finger, in any other case it releases pressure from the wire and makes the fingers return to their unique place.

To see extra about this mission, you may learn Ikram’s put up right here on Instructables and watch its demo video beneath.