Skype on Android controlling 2 servos via audio(keypad) to steer a UAV

Projects General Guidance
1

Hi.
I got this stupid idea that I could mount a Android phone to a cheap RC plane, connect it via the 3.5mm audiojack to a Arduino mini pro that would control the 2 servos to steer the plane.
On my laptop I would be running skype, calling the Android(skype) on the UAV, stearing the plane(the 2 servos) with the keypad on skype(laptop).
The call would be a video call, so I could see where I'm flying on my laptop.

I think what I need to is:
-Build cheap RC plane
-Get audio(does it need to be amplified) connected to Arduino via 3.5mm plug
-Connect the servos to arduino(should be easy)
-Write a program that listens to the audio and for example when hearing the tone of keypad4 moved the servo1 one step and so on. Keypad5 could be "drive all servos to center"
-Be ready to sacrifice a Andoid phone and cheap selfmade RC plane, because it will crash if when something goes wrong

Would this be hard?
Is this a stupid idea?

2

I'm especially lost on how to get the keypad audio tones into the arduino and to "read" them in my program. I really would love some help!

3

You might consider using DTMF telephone tones for the audio control. You might be able to send from one phone to another. There are dtmf decoder boards and chips available.

https://www.google.com/search?as_q=dtmf&as_epq=&as_oq=&as_eq=&as_nlo=&as_nhi=&lr=&cr=&as_qdr=all&as_sitesearch=&as_occt=any&safe=images&tbs=&as_filetype=&as_rights=&gws_rd=ssl

4

The plane would need to be able to fly autonomously so that the commands just tell it where to go. I reckon there would be far too much delay (and unpredictable delay) in the transmission time for direct remote control.

...R

5

zoomkat:
You might consider using DTMF telephone tones for the audio control. You might be able to send from one phone to another. There are dtmf decoder boards and chips available.

dtmf - Google Search

Thanks for your reply!
That got me to DTMF - OpenDrone
Seem to be exactly what I'm looking for, I was hoping to do this in software, but the chip will most likely be better

6

Robin2:
The plane would need to be able to fly autonomously so that the commands just tell it where to go. I reckon there would be far too much delay (and unpredictable delay) in the transmission time for direct remote control.

...R

I was thinking more of a glider, so speed will not be my goal