Can someone explain to me how the rc transmitter/receiver works?
Hello, I am not sure if I am asking this in the right place, but I guess people with experience might know what I am after. What I would like to know is what data is passed between the transmitter and receiver and how does this data vary when for example increasing the helicopter speed or moving the helicopter to a different direction. I have built a small prototype made from ArduinoUno and a receiver. When I turn my helicopter remote control on and increase the speed I can see a burst of 1's sent to the reciever. Increasing the speed makes it seem as if the burst increase in frequency. However I cannot understand how the reciever on the helicopter interprets these bursts and how it distinguish between for example an increase speed signal and a turn left/right signal. Can anyone help me out?
Both deflections are proportional (there is a feature named exponential which makes that proportion non-linear on purpose).
The steps are input deflection -> variable resistance (potentiometer) -> pulses per second of radio wave -> potentiometer of servo motor -> output deflection
That output deflection is used to deflect control surfaces.
For electrical power, the radio wave controls the amount of electricity (pulses) fed to the motor rather than the deflection of a servo.
Check this link for a better explanation:
http://www.rc-airplane-world.com/rad...trol-gear.html
Best I can do here. I recall having seen a complete description (including pulse trains) somewhere, sometime, but don't remember where.
Les