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Speed controler info
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dyrodium
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Joined: 24 Aug 2004
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Location: Sydney


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ditto.
so... when's the IBC 2 looking to come out? Very Happy
lol
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Post Mon Apr 18, 2005 7:29 pm 
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timmeh
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Joined: 20 Jul 2004
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*Brett pulls large chunk of hiar out* Laughing
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Post Mon Apr 18, 2005 7:32 pm 
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Spockie-Tech
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Location: Melbourne, Australia


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I've thought about it a few times, but cant really think of much that I would change that would justify a whole new design..

I have a few minor tweaks in mind (like maybe redesigning the component layout to make it easier to add a fan or extra heatsinking), and maybe changing to a more powerful microprocessor so a more flexible failsafe code routine could be written (making it cope with low quality radio links easier).

But they're both a lot of work for not much gain feature or capability wise..

If I went larger in terms of current capability, *then* its competing against the RS80, which I dont want to do. Adding current limiting would be nice, but would raise the cost up to the point where it would be cheaper to buy an RS80.

I think the next project will be to "Commercialise" the current prototype PRC (PicaAxe Relay Controller") prototype used in Vincent. ie. design a circuit board instead of the point-to-point-wiring the prototype uses, arrange for someone (Oatley, Jaycar) to produce a build-it-yourself simple kit that kids can buy and put together etc.

It can then be the beginners controller for those who want to compete in the "Bot-Bash" class, or cant afford an IBC, but dont want to muck about with Servo Switches.

After that, if I'm bored (Ha), I might look at designing something like an add-on current limiter module that can be used with *any* RC controller (IBC, Victors, etc), or maybe add current limiting to the MMC design and integrate it to make an "IMC" (just gotta love those TLA's dont you Wink) in anticipation of the off-road class developing further down the track.

Right now, if I can get all my (paid) work done and actually get around to fixing I.G. before the next event (which I have to organise as well) I'll be happy.. Rolling Eyes
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Post Mon Apr 18, 2005 8:13 pm 
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Nexus
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Joined: 17 Jun 2004
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Have a question about the IBC if someone can confirm this.

Want to use the aux channel as an invert switch so manual suggests all u need to do is connect pin 5 - the flip input to either pin 2 or 3 - the aux hi or low.

Then I gather I could control it by a switch on my radio on a third channel.

Thought I should double check that b4 I did anything.

Is it as simple as that?
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Post Tue Apr 26, 2005 5:07 pm 
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timmeh
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I dont think you can as i asked brett that a while aggo and he sed it wont work.

Thats why i got him to make me an invert switch thingo to attach to the flip input and into the radio. You can have it if it still works as i dont know if i killed it or not when i hooked it up wrong.
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Post Tue Apr 26, 2005 6:26 pm 
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Nexus
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Arent u using the third channel for your weapon, U can can do either one i am guessing but not both.
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Post Tue Apr 26, 2005 7:04 pm 
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timmeh
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I was using that on my ibc when i had 4 channels and blew one channel when i hooked the invert switch up wrong. So you can have it if you want as i dont have an ibc but i dont know if it works or not.

Now i am using victors and the mixer has a rc flip input but untill i get my new 6ch radio i wont be using it as i will kneed that channel for my weapon.
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Post Tue Apr 26, 2005 7:31 pm 
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Spockie-Tech
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quote:
Originally posted by Nexus:
Have a question about the IBC - Want to use the aux channel as an invert switch so manual suggests all u need to do is connect pin 5 - the flip input to either pin 2 or 3 - the aux hi or low. - Then I gather I could control it by a switch on my radio on a third channel.


Yes, that is all thats required.. just connect the two pins, and thats it.

Of course this means that one of your weapon outputs is no longer available if you are using the 3rd Aux channel for them.

If you want to keep both your auxillary outputs AND have radio-controlled flip, then its a simple matter to make a tiny little board that has an 8-pin pic-axe, a servo lead and about 5 wires that will decode a *4th* receiver channel to activate the flip input and still leave your auxillaries free..

Its about the size of a USB plug and just plugs into the auxillary connector on the IBC. Total cost about $10 (Assuming your build it yourself).
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Post Tue Apr 26, 2005 11:12 pm 
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Ajax
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Joined: 17 Jun 2004
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Another way of setting up a flip fuction is to use a tilt switch.

This one will do the job.

http://au.farnell.com/jsp/endecaSearch/partDetail.jsp?SKU=178338&N=401

This one doesn't have mercury in it so it can be used in an event.

I have done some testing with one and it works well. But I haven't yet used it in combat, So I am not sure how reliable the controls will be. It should be good.

The main differance is that this will trun the flip function on and off automaticly.
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Post Wed Apr 27, 2005 9:12 pm 
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timmeh
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These look like some awsem controllers and not bad priced too.
$495us

http://www.roboteq.com/ax2550closeup.shtml
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Post Tue May 03, 2005 9:31 pm 
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Glen
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nicks got one, wicked bad controller but there way to big for any realistic sized feather
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Post Tue May 03, 2005 9:34 pm 
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timmeh
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Looks like a kickass robust controller for larger bots tho.

Very solid looking and has a solid case.
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Post Tue May 03, 2005 9:39 pm 
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Knightrous
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Joined: 15 Jun 2004
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A few of the uk fellas were blowing up the RoboTeq controllers when using LEM, PERM or ETEK motors in heavy weights. Large spikes of voltage & current are generated by these motors when going from full forward to full reverse.

But I believe a solution has been found.
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Post Tue May 03, 2005 10:42 pm 
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Spockie-Tech
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The RoboTeq's are a very feature-full controller as far as the brains go.. they'll do anything you like and probably bring you a coffee with it as well..

But, they're not well liked amongst the ESC manufactureres last time I looked thanks to their habit of redefining the meaning of "amps" to suit themselves.

After much harassing on the OSMC list when it was proved that their controller would *not* handle a realistic 120 amp average, their response was to call it a "120 SmartAmps" controller.

Its about as much of a 120-amp controller as an RS80 is (it has a dual fet drive circuit like an RS80), or an IBC is a "80 amp" controller.

It will allow momentary *peaks* of 120 amps (so will an IBC if they're short), but will then rapidly dial it back to 80 amps or lower (depending on cooling) as the temp and current limiting kicks in.

This pissed off the other ESC manufacturers no end since it made their controllers look higher rated than they actually were by comparison to everyone elses and was seen as some sleazy marketing. Especially when they didnt back down when called on it, but just changed the 120-amp rating to 120 "smart amps".

Kind of like a set of "500 watt PMPO (Peak Music Power Output)" speakers which in actual fact will fry at 50watts of real (RMS) power.

Pity they were so stiff-necked about it, other than their blatant over-rating, it looks like quite a nice controller.
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Post Wed May 04, 2005 2:12 am 
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Philip
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Joined: 18 Jun 2004
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Location: Queensland near Brisbane


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You have to respect the way Brett will give other speedos a fair go and not just back the IBC.
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Post Wed May 04, 2005 1:13 pm 
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