my prototype home made RC system 1.2KM range

[ENG.Alamin]

I would like to share with you guys my recent project that i've been working on it about one month .

here some images of it

first of all it's multipurpose RC for any thing you want to remotely control it
like all heli , all fixed wing , field robotics , ...etc
built with 1.2km (L of S) proved range :) the main micro controllers are pic18f4550 at transmitter and pic18f2550 at receiver
http://2.bp.blogspot.com/_oiccDSAEaj0/SZUkMKymMtI/AAAAAAAAAC8/PfPRf3zwYf4/s320/P1010321.JPG

http://3.bp.blogspot.com/_oiccDSAEaj0/SZV-H4OofII/AAAAAAAAAD8/tgWHW_mHqoQ/s320/P1010289.JPG

http://1.bp.blogspot.com/_oiccDSAEaj0/SZUoZn1TAfI/AAAAAAAAADU/OFt-PtZP_V4/s320/P1010417.JPG

http://4.bp.blogspot.com/_oiccDSAEaj0/SZUpmCzs3WI/AAAAAAAAADc/vokggIsVZlE/s320/P1010350.JPG


http://2.bp.blogspot.com/_oiccDSAEaj0/SZUmmKZS0CI/AAAAAAAAADM/mWdAme0FIHg/s320/simple-samrabii.bmp

RX unit

http://1.bp.blogspot.com/_oiccDSAEaj0/SZWXWgJnSEI/AAAAAAAAAEE/r5hu8m5j4HI/s1600/P1010405.JPG
Receiver unit Features:-
• high speed and stable servo driver (real time ).
• 5 payload control (camera , LEDs, robotics ARM ,…etc).
• 3 feed back ADC .
• signal cut off subroutine (auto recovery , save landing , ….etc) .
• small size .
• high sensitivity.
• Flexible and Reliable.
• Eliminate Signals interference.
• Low power consumption.


you can fined more information here in my plog (http://ec23.blogspot.com/2009/02/remote-control-system.html)

please feed back me about what do you think about it

[munen123]

very cool! :)

[CrashingDutchman]

Very nice!

[iter]

Cool! Do you read USB output from the joystick or do you read its potentiometers directly?

Ari.

[ENG.Alamin]

No it's impossible with pic18f4550 to read joystick through usb streaming because this MCU can not work as usb host :) it possible with pic32 .
so i just went direct to potentiometers and buttons.

thank you guys for your comment .

[geotrouvetout]

Hi ENG.Alamin,

which module for transmitter and receiver are you using, what is the power, and what kind of signal is sent (PPM, PCM or other).


Thx

Géo ;).

[ENG.Alamin]

well about TX module name is GT1 434.xxx
RX // /// GR1 434.xxx

TX power is 25mW
RX sensitivity = -117dbm
FM narrow band
you may notice that 25mW is low power , well yah it's but if your antenna is good
you'll get wide coverage area about 1.5 Km line of sight maybe ,
so the antenna is crucial as the module performance itself sir.
------------------------------
:)
kind of signal I sent is binary signal with baud 4.8kp/s using FSK modulation :) .

MHD. Elamin

[BushmanLA]

Nice work.

I've actually got my old PC joystick stripped down for this very purpose. I intend on interfacing it into the RF deck of my RC Tx through the buddy port. I never can find the time though :(

[ENG.Alamin]

that's extremely interesting project... , i hope you find the time to complete it . :)