Testing Mark V Generator Mount

Testing Mark V Generator Mount

Date: 12.28.18
Location: Logan HS
Time: 9:00-11:30 AM
Goal: Test the newly 3D printed Mark V Generator Mount.

Just a quick post to show the initial test of the Mark V.

We still have some work to do on the actual mount and the motor we are using is inefficient but as you can see from the videos, we are harvesting energy from the heel strike. This is a major step for us as we now will start looking for more efficient motors and using multiple motors to increase the voltage we harvest.

The mount seems stable on the leg and does not move which was a concern. The gearing seems to be holding up to the force of the compression step and our simple linkage (a welding rod) appears to be the correct gauge.

We need to work on aligning the gears with the linkage. Our next mount may move the motor further in line to accommodate this. We also need to design a linkage for the rod to attach to the heel. This will be 3D printed.

This is the old Mark IV Generator Mount

This is the new Mark V Generator Mount. The gears have been flipped to the other side and it is seated farther
down on the prosthetic limb. We shortened the taper because it was creating issues with the foot placement.

Video of the Mark V in action.

Video of the voltage output from the Mark V. It varies from about .8 V to 3 V.