
An overall shot of how the device would be used with the handheld display device, the anklet and the sensors in the shoe.

Animation of how the display functions as you move pressure from the bottom of the foot to your toes.
Close up of all the components when the device is off.
Close up of all the components when the device is on. Note that the lights are all blue because no pressure is applied to the shoe.
Close up image of the display as pressure is applied at the bottom of the foot.

Different brainstorming ideas for an assistive device.

I was inspired by Pedobarography– the science and mapping of foot pressure distribution. This is a healthy pressure distribution example.




This sketch is the math I was trying to figure out to properly display RGB values on a 0-1023 range in a color gradient. Basically, as pressure increases, the LED goes from blue to green to red. The final values in the code was based on trial and error while using the shoe, to figure out the right values that makes the gradient look right.

For the “good job!” light: This sketch is deciphering the research and mapping out the correct pressure distribution for each zone. Then using the values corresponding the 0-1023 value read of the pressure sensor to help map out the correct corresponding RGB value.



Old shoe sole.

Transferring the zone diagram.

Adding one pressure sensor per zone.

Wiring them up to resisters, power and ground.

Connecting each sensor to its corresponding input pin.

Connecting each sensor to its corresponding input pin.

Connecting everything to the LEDs.

Sketch of the way I visualized the handheld device.


Digitization of sketches, and laser cutting the pieces.





Figuring out where the best place to put the connecting housing.


Connecting the shoe to the handheld device.

Soldering, soldering, and more soldering.

Connecting, connecting, and more connecting.

Making the anklet housing.

Alas! The anklet is complete, rigid, and the device works well.
