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i am going to buy a transmitter and a receiver because i want to build a remote controlled robot.  i have one question about the number of channels.  if i want to be able to control three servos/motors, do i need a transmitter with three channels and a receiver with three channels?  does each channel control a different part of the robot?


each channel for each servo.
one channel right wheels, one channel left wheels, 3rd channel for accesories

Steve Joblin:
You can get by with just one transmitter and one receiver.  if you are using somethng like this (, it is a simple matter of transmitting a serial command that would be received and processed on the robot.  One command would be to turn the robot left, another command to drive forward, another to turn right, etc.


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