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hy...is it possible to replace relays with npn transistors???? spent all my money buying an arduino :( relay are not so cheap
thanks very much (y) ...at last it worked ....
Vsir i made it and everything woeks just fine. But motor is turning very slowly....i am using 9V battery. How to deliver more power to the motors??? Arduino works upto 12V....how do i deliver 18V to the motors?