BuckBoostConverter

A Buck Boost Converter circuit that can be controlled by a keypad to adjust the output voltage and also an LCD to display the duty cylce of the signal generated by the arduino nano pin circuit. 

the circuit consists of LCD (16*2)

Arduino Nano Board

Keypad(4*4)

2 Mosfet

2 Diode

Coil

the circuit is not just a buck converter that decrease output voltage or even a Boos circuit that increase output voltage,

it is a mix of the two circuits.

a 2 in 1 circuit that is functional for your product.