schematic for contorl 12 v motor using arduino and adapter

hi every one . would you please help me to design schematic for a circuit which will be able to control 12 v motor DC , IR/Ultra Sonic sensor using Arduino and adapter(wall charger )
I mean , I should use which componetets for converting voltage ?
looking forward for your answer.

What is the stall (starting) current of the motor? What is the current capacity of the motor power supply (wall charger)? Will the motor rotate in only one direction or must it be reversible?

It is usually best if the motor power supply and the Arduino supply are separate if possible.

Use a circuit like this one: