What is piezoelectric energy harvesting?
Piezoelectricity translates to “electricity from pressure.” The prefix piezo in Greek means to press or squeeze. Piezoelectric materials exhibit the piezoelectric effect. This allows a mechanical force to be applied to the material to deform it slightly and the material will produce an output electric power. This is done by rearranging the dipoles of the piezoelectric material. This rearrangement causes a change in the dipole density and therefore a change in the electric field between the dipoles. Because of this change in the electric field, the piezoelectric material produces an output electric power.
What will be accomplished in this Instructable?
Completion of this Instructable will result in a piezoelectric energy harvesting "boot." With use of other electronic components, this unit will be able to power other small devices that have a low power consumption. Total project cost (for 1 unit) is ~ $100.