​Team [REDACTED]​.

Completed first prototype. Responded to sensor input and gripped or released based upon system state.

Cam linkage, and similar sensor inputs to the first model.

With articulated fingers, it was a great thought experiment about proportions, actuation, and aesthetic.

Assembly in the works.

Assembled arm, based upon Liani's own arm.

For scale reference. We're designing for ourselves at this point. Realistically, the demographic that lives with below-elbow amputations are typically males that participate in physical industry work. We may be moving into more scale-appropriate versions.

Hard at work calibrating our pressure sensors.

REV 3 is underway, and our feedback cuff REV 1.5 is assembled and squeezing.

Switching over to servo power for the gripping mechanism.

The feedback cuff on our lovely model Ellie.

Working at the white board, developing a structure for our code development, making a finite state controller.

Hard at work on software development.

This is REV 1 of our arm angle finder, which will be one of the sensors used to determine the state of the system.

A quick snapshot of a code-proto session.

In the finger tips, we can now sense grip.

Using steel reel and hinges to improve our gripper.

after a full day of work in assembly and troubleshooting, our fully assembled REV 6.

The feedback cuff, which squeezes a users arm matching grip strength, and the elbow linkage, which measures the arm position.

A close-up of some of the innards of the arm.

The full arm, cleaned up from the all-nighter.

Our prosthetic, fully realized for the first time!

One of our fingers outfitted with a touch sensor.

In the "Relaxed" position.

REV-6

Some disassembly required.

Delrin lasercut ribs for our final prototype.

The palm and a finger being assembled.

The skeleton, palm, and fingers are underway.

Made of some cloth, velcro, and elastic. The microservo pulls the cuff together, squeezing a user's arm.