DC Motor speed control

Hi guys!
i have a lot of improvements... everything works...It seems problem was in the board...
First i will explain the situation and then i will tell u what i want to achieve...
Right now with the help of MOSFETs i supply motors. Its done by taking 220 V out of power supply and transforming it into 9V 3A. So now i need to supply arduino and motors separately...i want to supply arduino from same 9V. How can i do that... what parts do i need to do that...