Program for use Arduino Mega 2560 r3 PWM to control boost converter

We want to boost 12v to 36v and need program for that :zipper_mouth_face:

You will need some hardware for that. Probably cheaper to buy a DC-DC converter than to try to make a DC-DC converter out of an Arduino UNO.

Here's one for $5.58 including shipping:
http://www.ebay.com/itm/like/391077887800?lpid=82&chn=ps

thanks for your reply sir but we need that for our final year project inorder to submit it we have to try it in our own so please give us some ideas for do it in our own effort....thank you,....