i want to build a Radio Controlled car my self...i've tried to copy the circuit from my own RC car, whose control is digital proportional, but it is too dificult..i would appeal to anybody to please giv me the web address of a site that has the circuit diagrams for the transmitter and receiver of a digital proportional RC system, or if anybody would mind sharing the circuit diagram they hav with me..i prefer digital proportional since u can control the speed of the car also..i wouldn't mind even if somebody gives me a similar circuit diagram which achieves the same thing as digital proportional..is PWM control similar to it???