Hello Mam, We are the student of b.tech mechanical engg. we make foot step electricity genarator when we press the top of the project the spring is press the mechanical setup of project is working the rack and pinoin is connect to the shaft is connect to pully is connect to dianoma with help v velt when we pressure the top of the project the rack and pinion is rotating the shaft is rotating to the pully to rotating to dynoma is rotted produce the electricity and we optain the electricity by the system