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Author Topic: 'Radio Link' 2.4ghz R/C  (Read 5462 times)

Offline mjt60a

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'Radio Link' 2.4ghz R/C
« on: January 24, 2012, 07:39:25 AM »
has everyone seen these? - http://www.giantcod.co.uk/gianitcod-24ghz-4channel-mode2-transmitter-p-403779.html - I got one at the Model Engineer Ex, reviews I've seen (on Model Boat Mayhem, Giant Cod ) are quite promising... at the model shop I couldn't get a 2ch 27 Mhz for that price!
Posted by Mick.
(.....gonna need a bigger boat.....)

Offline PeeWee

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Re: 'Radio Link' 2.4ghz R/C
« Reply #1 on: January 24, 2012, 07:09:13 PM »
I swear by 2.4g systems (excluding use on the submarine)  and the prices for the non traditional brands are fantastic 
Ian
Sane? who knows? who cares?

Offline Spankbucket

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Re: 'Radio Link' 2.4ghz R/C
« Reply #2 on: January 24, 2012, 08:49:41 PM »
I wouldn't dream of going back to the old systems since I began using 2.4Ghz....and at that price who would go any other route?

Offline Bob Golder

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Re: 'Radio Link' 2.4ghz R/C
« Reply #3 on: January 25, 2012, 02:00:47 AM »
I have used one of these all last sailing season with no problems. :)  I'd recommend them to anyone
Cheers from Bob Golder

Offline mjt60a

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Re: 'Radio Link' 2.4ghz R/C
« Reply #4 on: January 28, 2012, 07:53:34 PM »
thanks evryone, good to know it is a bargain and not 'too good to be true' as it were....
it was supplied with a basic set-up sheet which says -
1) ensure all batteries are correctly charged andin situ
2) switch on the Tx then the Rx
3) the green LED inthe Rx will flash several times then glow solid
4) locate the small button below and right of the Rx antenna, with a match stick depress for about 5 seconds
5) move the control sticks on the Tx and the ervos should respond.
binding is now complete
Now, I didn't buy servos and battery holder to go with it but have some I bought online, only problem is the plugs will fit in ether way up so I hd a look on google etc and found these pictures...
Before I wreck the receiver, am I correct inassuming that the + and - applies to the battery connections as well as the servos?
that the 'square wave' symbol (signal?) is the white wre on the servos?
and that the purple/red/yellow on the new (hextronic) servos I got is equivalent to black/red/white on the older (futaba) ones?
I also found some set-up instructions that differ slightly from those supplied with the set, it says they are for the 7 channel set and assume (it seems) a BEC will be used but maybe it's not important as I have a 4ch (7ch Rx though..)
any advice is most welcome
Posted by Mick.
(.....gonna need a bigger boat.....)

Offline mjt60a

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Re: 'Radio Link' 2.4ghz R/C
« Reply #5 on: January 28, 2012, 08:02:44 PM »
...just had a look at the hextronik website to see if I could find out about the wire colours... I noticed there are digital and analog servos, as the ones I have were intended for use with 27mhz AM transmitter, will they even work with the radio link one? I suspect I'll need 'special' ones...
Posted by Mick.
(.....gonna need a bigger boat.....)

Offline kiwimodeller

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Re: 'Radio Link' 2.4ghz R/C
« Reply #6 on: January 28, 2012, 08:28:13 PM »
Mick, mine is not a Giant Cod 2.4g system, it is Spektrum but I have had both analogue and digital servos working fine with it and I have not read anywhere that you HAVE to have digital servos. Also I have had both battery input and servos hooked up the wrong way and no harm done except that things didnt work. Best to try and find the right way to connect them on the net if you can but if not dont be afraid to try it and see! Cheers, Ian
"Every time I think I see the light at the end of the tunnel it turns out to be some bastard with a train trying to run me down!"

Offline Spankbucket

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Re: 'Radio Link' 2.4ghz R/C
« Reply #7 on: January 28, 2012, 08:30:04 PM »
I have used all kinds of servos on my 2.4Ghz set ups and they all seem to work.

The signal sent to the servos by the Rx is independent of the Rx frequency and, I think I am right in saying, is standard (Does someone out there know the detail?).

john s

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Re: 'Radio Link' 2.4ghz R/C
« Reply #8 on: January 29, 2012, 07:06:28 AM »
For normal rc boating digital servos are not needed. For more infro on radio link sets ,may i suggest you look at the model boat mayhem site. John.

Offline mjt60a

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Re: 'Radio Link' 2.4ghz R/C
« Reply #9 on: January 29, 2012, 11:12:41 PM »
Good idea (model boat mayhem) I should have thought of that - that was where I first read about this set, thanks again everyone...
Posted by Mick.
(.....gonna need a bigger boat.....)

Offline mjt60a

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Re: 'Radio Link' 2.4ghz R/C
« Reply #10 on: January 30, 2012, 05:17:41 AM »
I read a thread on 'mayhem' that was relevant to my situation then had a little play around with this today and this is what I found...
the connections shown in the pictures are correct - I removed the cover from the Rx and it is marked on the circuit board.
the wires on the Hextronic servos are as I'd assumed, purple for -ve  red for +ve  and yellow for signal - so they plug into a reciever the same way as servos with black/red/white (thought they would, it'd limit sales a bit if they didn't).
they do work on this Rx, I don't have any digital ones to try but maybe they'd work too (not sure what the difference is)
Important! the Rx doesn't work with 6 volts like my 27Mhz ones do! I don't have a BEC device (is it built into a speed controller and supplies a reduced voltage from your main battery?) so used a battery case from the futaba set, the green LED didn't light but the Rx started to smell of burning, I removed one of the alkaline batteries and replaced it with a suitable size piece of metal to give 4.5 volts (not quite the 5v it says in the instructions), it then worked fine (four Ni-cads would have been OK as they're 1.2 volts each)
the instructions on line (second picture) say something about the BEC being connected to channel 3 but as I was using separate batteries I plugged it into the 7th set of pins and that worked.
 
Posted by Mick.
(.....gonna need a bigger boat.....)

Offline Spankbucket

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Re: 'Radio Link' 2.4ghz R/C
« Reply #11 on: January 30, 2012, 05:37:22 AM »
I think I'm correct in saying that NiCd batteries deliver 1.4v and NiMh 1.2V. So 4 of the former is 6v and of the latter is 5v.

Offline mjt60a

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Re: 'Radio Link' 2.4ghz R/C
« Reply #12 on: January 30, 2012, 06:49:54 AM »
it says they're 1.2v on the batteries....
http://en.wikipedia.org/wiki/File:NiCd_various.jpg
...in fact it says 1.2v on Ni-Mh also so could use either, I'll have to look into getting some and a charger.
I'm just happy the Rx still works after I overloaded it  :-[
« Last Edit: January 30, 2012, 06:54:30 AM by mjt60a »
Posted by Mick.
(.....gonna need a bigger boat.....)

Offline Spankbucket

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Re: 'Radio Link' 2.4ghz R/C
« Reply #13 on: January 30, 2012, 08:13:00 PM »
I wont argue with that....if it blows up anything then you can claim from them!!!

Anyone know the definitive answer?

Offline Spankbucket

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Re: 'Radio Link' 2.4ghz R/C
« Reply #14 on: January 30, 2012, 08:22:01 PM »
As usual I am confused!!!

On this occasion with the comparison of volts delivered from a conventional cell!

My apologies for the confusion....I blame ageing!!

 

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