I am working on a remote controlled car using Arduino Uno and Xbee. I need to power 4 12V 500 RPM Johnson Motors that require 800mA current (no load) and upto 9A current (Load). I obviously can not power the motors directly from the arduino so I need a motor driver. The ones I have , L293D and L298N, have current limit of max 4A. So probably I should not use them for controlling the motors.
Motor drivers that support more current are very expensive and not the best choice for me.
Can anyone recommend some way to use the motors along with the arduino. I need to change the directions as well as control the speed.
Thanks in advance
Note- I can also use a combination of 2 12V Johnson Motors and 2 300RPM normal DC motors that do not have that high current requirement.