I started this project for science fair and making this project I gained experience about Arduino servo and many things. And I am sure you will enjoy making this project .
Pro's of smart shoes:
-It generates electricity so we can charge our phones.And that's very helpful while we go for trekking.
-Auto lacing helps children who don't know how to lace and old people who have back problem.
-Step counting helps runners and joggers.And people who are on diet too because the app shows cal burned.
-And the light will be helpful to see in dark.
I made a acrylic base for Piezo to stick on it and make sure to drill holes below every Piezo else it won't generate electricity because Piezo need tension and compression to generate electricity. And place piece of foam or some same type of material.
Connect all Piezo elements together in parallel.(as circuit diagram)
Rectifier is converting AC current into DC current.
Used drill machine or dremel to make holes in the shoe. And zip ties to direct the laces towards the servo.
You can use different things to direct the laces but I couldn't find anything then the zip tie. I used servo knob code you can also use different code to control servo. You need to know the basics to code Arduino Pro Mini or Google it .