Re: Control r/c vehicle via a pc

I want to control my ornithopter in such a way that I press keys on th
keyboard, and the signal is transmitted from the transmitter, which i
received by the receiver, resulting in bird motion. Is that possibl
using PCTx
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Messenge
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Messenger
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On Fri, 27 Jun 2008 12:13:42 -0500, Messenger wrote in :
I don't know of any off-the-shelf solutions to your question.
There is no reason in principle why you can't rig a TX to be driven by output from a computer.
The devil is in the details. I've never succeeded in creating my own control circuits, even though I think I know the theory.
A friend who really does know what he is doing with circuits used to fly drones via portable computers back in the Vietnam war. It was in the pre-PC days. If they could do it then, you could do it now.
And, of course, lots of current drones are controlled from the ground by computers ...
Having said that, there are easier ways to get RC ornithopters going:
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Marty
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Martin X. Moleski, SJ
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Sometimes, just knowing that something can be done is enough to provide sufficient impetus for serious work on a project.
I'm guessing, but I suspect that the OP (original poster) is seeking a vehicle that is capable of hovering as well as forward flight. The reason I say this is that other than for novelty, there would be no other reason that I can imagine for wanting an ornithopter, other than novelty.
If one wished to start from ground zero in developing flight software to control all of the actuators in said ornithopter, might it not be easier to do on a laptop than to worry about making the bird autonomous with its own personality PROMs?
Unfortunately, the delay through the system would be problematic, if that was his goal.
Ed Cregger
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Ed Cregger
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Computers are very fast, it's all that software that slows them down. If it was programed in binary it would be faster than I am. Do they even program in binary anymore? mk (who used to know an AND gate from a JK FLIPFLOP)
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MJKolodziej
On Fri, 27 Jun 2008 16:52:01 -0500, I said, "Pick a card, any card" and "MJKolodziej" instead replied:
Compilers are supposed to take care of that menial task. The problem is now more related to the relative slowness of the interface. When it comes to controlling an RC tank or car, the speed is far less critical than trying to control a flying object where split second timing mistakes can me a crash. Even USB 2 is slow enough to cause serious delays in control. Remember the early digital proportional systems and how much delay there was between stick and stab?
There used to be a web cam setup where you controlled an RC equipped Tonka Toy dirt scoop. It was great fun but almost like using a Martian rover from earth. The delays were phenomenal. I'm sure you could rummage around and find other remote control items like it. -- Ray
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Ray Haddad

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