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« on: February 21, 2014, 02:50:56 PM »
Rahulvyas
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"If it's man-made and it flies, it will crash."

hi,
I need to make it for an inter school event.
I have my car ready but i dont know about the circuit. i dont want to use RC Tx and Rx! Want to make it using normal circuits, but I am unable to find suitable circuit for this.
Well, there needs to be a Remote which can control the car. But it should be RF based!!
- my car is already ready( attached 4 motors and 4 wheels)
- i need a circuit ( Rx and Tx which can control 4 motors using one 12V battery and 1 motor- needs 1A current.)

please help me urgently
Thanks,
Rahul
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« Reply #1 on: February 21, 2014, 03:00:07 PM »
rcrcnitesh
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use XBee
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« Reply #2 on: February 21, 2014, 03:26:32 PM »
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"If it's man-made and it flies, it will crash."
can u link a tutorial( if any)?
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« Reply #3 on: February 21, 2014, 04:09:20 PM »
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sorry I dont know much about these stuff but you can contact MUAV they have this stuff and may help you also.
and in tenth all these stuff wow I wish I was in New Era
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« Reply #4 on: February 21, 2014, 04:59:03 PM »
v2 eagle
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Xbee? But why?
Use a normal RF module. search for ""RF 433 link.
Its much easier and cheaper and can give a max 200 meters range with a 1 meter antenna.
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« Reply #5 on: February 21, 2014, 07:51:51 PM »
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Buddy make one yourself, goto TalkingElectronics.com find 27Mhz linkz under find 1 channel transmitter circuit
its very simple, the same circuit can also work as receiver.. the range is around 100 meters, with the help of 4017 ic you can get 10 functions out of 1 channel.
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« Reply #6 on: February 21, 2014, 08:30:32 PM »
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"If it's man-made and it flies, it will crash."
ok, if i take normal 433mhz. what's the circuit schematic?
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« Reply #7 on: February 21, 2014, 08:38:13 PM »
v2 eagle
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http://www.ebay.in/itm/RF-Transmitter-And-Receiver-Module-With-Ancoder-And-Decoder-433-MHz-/321320218171?pt=IN_Computer_Components&hash=item4ad02d6e3b&_uhb=1

readymade kit is available for just 700 free shipping.
Dont try soldering those rf boards, they go down with little extra temperature. hope these kits were available during my college days.

okay here is the schematics if you want.
http://www.google.co.in/imgres?imgrefurl=http%3A%2F%2Fvijaykamble.wordpress.com%2F2011%2F04%2F03%2Fwireless-motor-control-through-rf%2F&tbnid=l4mZb2WTzsWksM:&docid=NHivAy4ZfQfJZM&h=1200&w=1200

Price breakup:
rf module 350rs
Ht 12e &Ht 12d pair 150 rs.
Switch, PCB,resistor battery clip 150 rs.

You better buy it from ebay.

Ashok.P
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« Reply #8 on: February 21, 2014, 08:46:46 PM »
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Patient Zero
If you have the budget here's flutter wireless:
http://www.flutterwireless.com

Here's their kickstarter vid:
https://www.kickstarter.com/projects/flutterwireless/flutter-20-wireless-arduino-with-half-mile-1km-ran

Xebee is too costly
2k or sum thin for the module I think. And gives like 300-400 mtrs range.
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« Reply #9 on: February 21, 2014, 09:01:56 PM »
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"If it's man-made and it flies, it will crash."
@V2 eagle- where do i put the switches here, and the l298 motor controller?
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« Reply #10 on: February 21, 2014, 09:03:47 PM »
Rahulvyas
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"If it's man-made and it flies, it will crash."
@RCneil- i want it urgently, and my budget is low!
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-2814 700kv Carbon Fiber 685mm Quadcopter ( tuning PIDs)
-Scratch build Hexacopter ( selling the parts) { almost sold}
-9xR - The best RADIO
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Student
 

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« Reply #11 on: February 21, 2014, 09:17:00 PM »
v2 eagle
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Here...

By using these address pins effectively you can have up to 128 parallel data channel in this module with a range of 100 meter with just a meter long whip antenna.

Ashok.P
wireless-motor-control-through-rf-circuit_01.jpg
Re: Need help urgently!!! - RF BASED RC CAR DIY scratchbuild
* wireless-motor-control-through-rf-circuit_01.jpg (74.15 KB, 800x800 - viewed 884 times.)
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« Reply #12 on: February 21, 2014, 09:48:33 PM »
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"If it's man-made and it flies, it will crash."
great. going with this now! i am gonna use l298n/ l298 motor controller, will the schematic remain same?
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« Reply #13 on: February 21, 2014, 09:54:12 PM »
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Havent worked with that earlier.
Why dont you use the L293d.
I do not use even an extra resistor with that chip.
just 12v direct to the IC without any regulation and it wont even warm up.

Ashok.P

Take this site for any reference:
http://www.pyroelectro.com/
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« Reply #14 on: February 21, 2014, 09:56:59 PM »
Rahulvyas
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"If it's man-made and it flies, it will crash."
l293d has max 700mA current. i want to send 800mA to 2 motors connected in parallel, so i need more current ( about2A per channel). that's why l298
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« Reply #15 on: February 21, 2014, 10:06:56 PM »
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Can you post a pic of those motors that you are going to use?
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« Reply #16 on: February 22, 2014, 03:14:06 AM »
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there are various schematics available online for RF Tx-Rx systems.

One easy way out is there( jugaard ), buy a 300-400INR RC car n scavenge its parts


Good luck with ur project mate
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« Reply #17 on: February 22, 2014, 07:51:52 AM »
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"If it's man-made and it flies, it will crash."
@V2 eagle- here https://c10645061.ssl.cf2.rackcdn.com/product/icongo/icg_739530_txdcgearmotor.jpg

rumblePirate- how do and where do i put the l298 motor controller on that cheap rc car?
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« Reply #18 on: February 22, 2014, 02:06:45 PM »
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4 motors? Skid steer?
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« Reply #19 on: February 22, 2014, 04:30:07 PM »
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"If it's man-made and it flies, it will crash."
yes! finally i did that RF setup. will upload a pic.
I bought a RF kit and a motor controller board powered via relays
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Student
 

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