HobbyKing.com New Products Flash Sale
Reply
Thread Tools
Old Mar 02, 2009, 11:57 AM
Registered User
Joined Mar 2009
1 Posts
Help!
Control your RC Via your PC

Hi, I'm fairly new to electronics and RC but have would like to build my own RC plane + control it with my pc. I remember awhile back I saw somewhere someone did an open source RC air plane which was hooked up to his laptop, but I can't seem to find that article anymore

I guess I need pointers on a few things:-

1) is it possible to control an RC toy with your pc via USB (don't mind building one if someone could point me to the right direction).

2) what frequency is best to use outdoors and for long range? e.g. would like to control an RC plane to fly within a 5 km radius.

basically I kinda want to start a project on piloting a camera mounted rc plane and have it fly around my area for fun :P might want to extend to project to helis and boats, would be so cool!!!
dasc is offline Find More Posts by dasc
Reply With Quote
Sign up now
to remove ads between posts
Old Mar 02, 2009, 01:49 PM
7000mw of raw power!
rich smith's Avatar
New Hampshire (not the old one)
Joined Dec 2006
5,987 Posts
Welcome to RCG!

1) Best method is to use PIC or AVR chip to convert rs232 (USB/Serial adapter) signal to PPM which then goes into buddy port of TX. I have preprogrammed chip to do this if you're interested.

Note that to make practical use it must be 2 way link which can be done very cheaply with XBee modules.

2) 35mhz has longest range for Europe but 72mhz for US almost as good. Use fresh alkaline not rechargeables for best range. You might get 2-3km on a good day. You need ham license to go farther.

Some 2.4ghz proponents will disagree but only because they never actually compared the 2 first hand.


Quote:
Originally Posted by dasc
Hi, I'm fairly new to electronics and RC but have would like to build my own RC plane + control it with my pc. I remember awhile back I saw somewhere someone did an open source RC air plane which was hooked up to his laptop, but I can't seem to find that article anymore

I guess I need pointers on a few things:-

1) is it possible to control an RC toy with your pc via USB (don't mind building one if someone could point me to the right direction).

2) what frequency is best to use outdoors and for long range? e.g. would like to control an RC plane to fly within a 5 km radius.

basically I kinda want to start a project on piloting a camera mounted rc plane and have it fly around my area for fun :P might want to extend to project to helis and boats, would be so cool!!!
rich smith is offline Find More Posts by rich smith
Reply With Quote
Old Mar 02, 2009, 01:53 PM
Engineer for Christ
IBCrazy's Avatar
Amherst, VA
Joined Jun 2006
10,301 Posts
1. It is certainly possible, but would I do it? No. Why? Computers freeze up and have glitches all the time. What happens when the program stops responding or you have a power blip? Make sure you have a back up radio system to take over with manual controls. Also have a back up monitor to which the camera transmits directly.

2. 5 km is really the outer limit of most radios systems. I'd go with a 72 MHz and a good dual conversion receiver. There are full reangee radios at 2.4 GHz, but I don't know if I would trust them at that range with a transmitting camera on board that will likely be on the same frequency.

-Alex
IBCrazy is offline Find More Posts by IBCrazy
RCG Plus Member
Old Mar 03, 2009, 08:40 PM
Go ahead... Build it to crash!
Fuegodeth's Avatar
Conroe, TX
Joined Apr 2007
2,630 Posts
That's a bold project for someone new to both RC and electronics.

There are some AMA guidelines regarding this sort of thing. Please check those out.

Someone will be along shortly to recommend that the FBI/DHS be contacted about this.
Fuegodeth is offline Find More Posts by Fuegodeth
Reply With Quote
Reply


Thread Tools

Similar Threads
Category Thread Thread Starter Forum Replies Last Post
Discussion Easist way to control a motor via a PC? Rufe0 DIY Electronics 10 Jul 14, 2007 04:05 PM
Making your own decals and markings with your PC? Joe Elston Electric Ducted Fan Jet Talk 17 Aug 16, 2002 07:44 PM
What Resolution do you use on your PC?? boomerace Life, The Universe, and Politics 19 May 09, 2002 01:55 PM
Here's how you know when your PC.. DNA Life, The Universe, and Politics 10 Oct 29, 2001 09:48 PM