How to control four motor using RC?

We are using AT89C2051 for generating PWM for each motor and already
controlled speed of each motor by varying duty cycle using a push
button.Still we are unable to control four motors using RC. We
programmed for sensing PWM out of RC but value is random in each
throttle position.No problem for PWM out from AT89C2051. It sensed
accurately and constant value obtained for each steps.We are using
P89C51RD2 for sensing PWM out.Can you help me to solve this problem?I need programming techniqu..

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ModeratorPermalink Reply by Chris Anderson on March 11, 2010 at 1:01pm
Why have you posted this twice?
Permalink Reply by SANJU.R.S on March 11, 2010 at 6:58pm
Need it urgently......so i'm forced to post in two different section......plz help me!

ModeratorPermalink Reply by Chris Anderson on March 11, 2010 at 7:48pm
That's just disrespectful of people's time and attention here. Please don't do it again.
Permalink Reply by SANJU.R.S on March 12, 2010 at 1:26pm
Plz reply to my question, if u know the solution.....
Permalink Reply by mook on March 12, 2010 at 2:02pm
I really don't understand your question
Permalink Reply by Morli on March 12, 2010 at 3:54pm
Sanju,
We do like to help you or any on else but like i suggested earlier , your question does not make sense to me/us, a incomplete question as well as posting twice will not get any help for sure. we are more into autopilot and not into quad controller inventions, so once again, try in microcopter and other quad copter forums for help with such questions as members there may be able to know what you are talking about.
Also note that posting the same question twice will get the first one deleted or both here after as it wastes anyones time and attention. thanks for understanding.
Permalink Reply by Sebastian Boehm on April 13, 2010 at 1:52pm
can you describe the problem a little but more in detail ?

to control 4 motors usinf and rc radio you can just connect 4 motor controllers to 4 rc channels and setup some mixers in your radio.

But if you want to fly a quadrocopter, that won't be stable enough, you'll need a control-unit equipped with gyros and ACC's.

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