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Radio
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How many channels
2
11%
 11%  [ 2 ]
3
23%
 23%  [ 4 ]
4
64%
 64%  [ 11 ]
Total Votes : 17

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robo robbo



Joined: 01 Jul 2004
Posts: 29
Location: Perth, Western Australia


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Radio

Just wondering how many channels you guys use so i can look out for some cheap radios-for a feather.

thanks
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Post Mon Jul 12, 2004 4:51 pm 
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Spockie-Tech
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Joined: 31 May 2004
Posts: 3160
Location: Melbourne, Australia


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For most Robots, 3 channels is sufficient. 2 for the drive, and 1 for the weapon activation.

The only 4 channel featherweight I can think of off the top of my head is Scoopy Doo which has 2 weapon channels (1 for the arm movement, 1 to activate the saw).

Heamorrhage has 2 controllable weapons as well, but I think Andrew (Vertex) came up with some clever way of running them both off one channel by having the lifter auto return so he still only needs 3 channels.

Post Mon Jul 12, 2004 4:59 pm 
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Glen
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Joined: 16 Jun 2004
Posts: 9481
Location: Where you least expect


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depends on 2 things, do you like stick radios or wheel radios?

if its stick, get a 4ch as thats all youll really need. if you like wheel radios, 3 will do you fine. as brett said 2 for drive 1 for weapon.
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Post Mon Jul 12, 2004 5:30 pm 
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Totaly_Recycled
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Joined: 15 Jun 2004
Posts: 1346


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The radio and speed controlers are the heart and soul of your robot.

We startred out with crappy radios from toy cars that only had on /off control and we stole the control boards from the toys to activate relays as that was all we had at the time .

Then we graduated to 2 chanel servo type radios ,these were ok but limited us to drive only or we needed two of them on different chanels to fire wheapons and drive at the same time .

The best idea would be to find the best radio possible at the cheapest price by just waiting and looking out for one on places like e bay or local tradres papers ect ..

At least a 3 or four chanel radio would be the best choice as was already mentioned most bots with one wheapon need at least 3 chanels but iff you hapen to come acros a 5, 6 or 7 chanel radio for a good price then grab it as you never know when you might want the ectra chanels as you can still use it with only 3 or 4 chanels.

Further down the track if you decide to build a bigger bot like a light weight or a heavy weight like we did then you will want the extra chanels for activating self righters secondary wheapon systems and all sorts of things.

Ihope this helps .
Andrew team Vertex

Post Mon Jul 12, 2004 6:50 pm 
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DumHed
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Joined: 29 Jun 2004
Posts: 1219
Location: Sydney


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I used two channels to control weapon and motors (partial stick on either channel gives weapon only, full stick gives motors as well), but once I find my old 6 channel radio set I'll use that as a 3 or 4 channel I think.
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Post Mon Jul 12, 2004 10:40 pm 
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3Faze



Joined: 26 Jun 2004
Posts: 99
Location: Lincolnshire, UK


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4 Channel Tx hacked to 6.

1&2 = mixed steering (1 sprung stick)
3 = unused
4 = unused
5 = spiner fwd/off/back (switch)
6 = remote shutdown (switch)

Might put some headlights on the ratchet travel stick on 3 at some point.

Post Tue Jul 13, 2004 2:08 am 
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Philip
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Joined: 18 Jun 2004
Posts: 3842
Location: Queensland near Brisbane


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I have 4 I wish I had 6

Post Tue Jul 13, 2004 10:09 am 
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original_carnage
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Joined: 12 Jul 2004
Posts: 326
Location: Toowoomba(ish), travel to Brisbane


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more the merry(er)

get in touch with your local RC airplane / chopper club. there is always someone selling radio gear with 4+ channels (heli / chopper clubs are good for 6 to 10 channel radio gear) - often selling very cheap.
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Post Tue Jul 13, 2004 11:20 am 
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robo robbo



Joined: 01 Jul 2004
Posts: 29
Location: Perth, Western Australia


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Thanks

I am going to use the sticks to drive cause i don't like the wheels and i prefer tank style steering (i know it's not the best). another question is how many people buy second hand radios or do you reccomend new ones.
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Post Tue Jul 13, 2004 5:32 pm 
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Windhammer



Joined: 19 Jun 2004
Posts: 338
Location: Roleystone WA


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i have a 2 channel radio but it not i use hope it will be soon

Post Mon Jul 19, 2004 10:21 pm 
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3Faze



Joined: 26 Jun 2004
Posts: 99
Location: Lincolnshire, UK


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Or my antweight setup....

1 and 2 - 0.3Faze (mixed)
3 and 4 - Housebot (mixed)

Tx control love it when 2 people book out one frequency and Tx to 2 robots Twisted Evil

Post Tue Jul 20, 2004 5:53 am 
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mytqik



Joined: 26 Jun 2004
Posts: 127


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has anybody seen this website before??

http://www.ifirobotics.com/index.htm

They do motor controllers & radios. The radios sound unreal, they operate on 900Mhz & have either 16 or 32 channels. Instead of using a stick transmitter, you can plu in up to 4 PC joysticks. They work out fair expensive but then again you have 32 channels & 40 different frequencies.

Post Sat Jul 24, 2004 10:36 pm 
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andrew



Joined: 16 Jun 2004
Posts: 3110
Location: Castle Hill, Sydney. N.S.W


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yes we have. the ifi speed controllers to this day prove to be some of the best in the sport.
The radio system is alright but there has been problems with them in the US and many builders that did once try them out r moving back to the conventional rc gear.
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Post Sat Jul 24, 2004 11:26 pm 
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original_carnage
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Joined: 12 Jul 2004
Posts: 326
Location: Toowoomba(ish), travel to Brisbane


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quote:
Originally posted by mytqik:
The radios sound unreal, they operate on 900Mhz & have either 16 or 32 channels. Instead of using a stick transmitter, you can plu in up to 4 PC joysticks. They work out fair expensive but then again you have 32 channels & 40 different frequencies.


Watch out for radio gear specials - they can get you in a lot of trouble...
In Australia, the only radio frequencies permitted for hobby use are 27, 29 and 40Mhz. You can get radio gear these days that don't use crystals, they operate off manually dialled in frequencies (no fragile crystals to break). I'm not up to speck on the insurance issues for robot combat in this country but with cars, boats, planes and heli's, very soon all radio gear must conform to (and be tested to) Aussie standards. No insurance payout if it can be found that un-approved radio gear was involved in the claim.
Don't forget that in this country CASA (the same mob that fines airlines hundreds of thousands of dollars) is just one of the government bodies that are looking over the shoulders of ALL radio / radio controlled activities in Aust. - I don't ever want a fine the likes that they hand out.....
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Post Tue Jul 27, 2004 3:18 pm 
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ffej
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Joined: 22 Jun 2004
Posts: 595
Location: Kurrajong, NSW


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Well, most of us use radios that are considered illegal for ground use anyway. 29Mhz is the only legal band for ground based hobbies in Aust, yet pretty much all of the stick radios sold here are build for aero's, and are 36mhz. Most of the 29Mhz stuff is also AM, which sometimes doesnt run real well in high noise environments.

As for insurance payouts, well, we dont have any anyway, so dont bother sueing if you get injured.
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Post Tue Jul 27, 2004 7:11 pm 
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