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New motors wired up and all the other wiring plugged back in including radio gear:
http://i1214.photobucket.com/albums/...2-22150645.jpg
12mm holes drilled in the Gimson Robotics wheels to allow them to sit a lot closer to the gearbox of a drill:
http://i1214.photobucket.com/albums/...2-22150718.jpg
Tried to get a photo, but its so close its hard to see that there is even a shaft on the motor at all:
http://i1214.photobucket.com/albums/...2-22150943.jpg
Waiting for the batteries to charge before I do anything else, so heres some photos I took earlier.
All kitted out (with the exception of the SBEC) and motors and wheels fitted:
http://i1214.photobucket.com/albums/...2-22151934.jpg
Another photo attempting to show how close the wheels now fit to the drill motors and why they ned to be so close:
http://i1214.photobucket.com/albums/...2-22152036.jpg
Bugger! Knew there was something I meant to do but completely forgot about :roll:Quote:
Originally Posted by Anttazz
Also, if you won't be needing an RX switch, could be worth moving the link into the middle. It is quite fiddly where it is, as well as being close to the front wheel. Up to you though :)
Haha not to worry man, I just plugged in the link (that you also forgot :lol: ) earlier and could hear the batteries slowly dying.
It is quite tough to get the link in even with all of the shell off so I might well move it eventually. Going to get it going properly first and then tackle other problems like that.
I found a video of it from Jamie's old channel, only one I could find though there may be more. Not sure if it was very broken or if Jamie's dad was driving :lol:
http://www.youtube.com/watch?v=4d3JS...hhhAmmmD8Ppr8s
Would've been my dad driving, if you can call it that! Back when it was Bullseye.
It always seemed to work fine on the bench, but he could never get it to go in a straight line. Was underweight and underpowered too, so not exactly a contender by any stretch of the imagination. It has since had a new chassis and the diagonal wheels will make it a little more controllable (well, as controllable as you can get with bang-bang control)
Right, had to dismantle the front pod of Cicatrix to get a set of reverse screws to hold the wheels on Rover, but thats done, batteries charged and first test run filmed:
http://i1214.photobucket.com/albums/...2-22-58-34.jpg
My old man heard the noise and came over to see what was happening, hes not too happy with the way its left the carpet :lol: :
http://i1214.photobucket.com/albums/...2-22230058.jpg
Why was it never that nippy when I had it?! :lol:
No idea man :lol: . I've not done anything to it that should change its speed dramatically, just a standard set of B&Q motors and slightly bigger wheels, everything else is the stuff that came with it. Maybe the extra 3mm made all the difference :proud: . With the shell on it was a bit slower, but thats possibly because the batteries had just about died again. It started going crazy shortly after the filming stopped on that last video, and on this video it ploughed into the wall and started smashing my cars parcel shelf up before I flipped it over (editted out)
I'm uploading the final video of my 1 day build diary now, but I forgot to put the camera off and filmed a lot of carpet before realising so have trimmed it down, but Final Cut has made the file huge and so its taking a while.
About to conclude my 24hr build diary with the finished article, then back to more important things i.e. Cicatrix new pod.
One other thing, my team mate recently purchased one of the shells Tom was selling on his sale thread so hopefully we'll see him contributing to this build thread and competing with his robot in the near future.
But for now, completed Rover with shell back on. Only a short video as the batteries don't last long at all plus all the chaos it caused as described above :lol:
http://i1214.photobucket.com/albums/...z/th_Rover.jpg
Looking good :)
The batteries are only 1Ah drill ones so won't last ages generally, but because that drive setup is almost akin to 4WD there will be resistance when turning. Add in the fact that it's running on carpet and the tyres are really grippy, and it'll probably be pulling a lot out of the packs. Once the batts are cycled a few times too they should last longer.
The batteries charged to 1.2Ah earlier, must've been completely dead. The wheels and carpet are probably giving it far too much resistance you're right, the pictures don't do it justice when I was trying to show what my dad was talking about, its like stripes on a football pitch the way its pulling the carpet around. I'll do a test on the laminate or outside after i've charged the batteries again and see how it all goes there.
As you mentioned earlier, the link is an absolute nightmare to get in with the shell on :lol:
Word of warning: tyres like that (and bike tyres) tend to leave nice black streaks on laminate, especially if the wheels are being spun up fast or sliding across the floor. If your dad wasn't too impressed with the carpet, I'd advise against the laminate! Unless of course the laminate is in a completely inconspicuous place that no-one cares about.
And yes, absolute nightmare. Although maybe that's a bit of an understatement :P
Said laminate is in the middle of the living room...maybe do it in the garage instead... :lol:
Its like, round a corner and all sorts, will definitely need looking at.
http://i1214.photobucket.com/albums/...2123212000.jpg
Thought i'd join the Christmas photo battle going on too.
Merry Christmas from Colin, Jamie and myself.
which website is that from :P looks nice
merry christmas
Website? It took me months to paint that! :lol:
Show-off :lol:
Merry Christmas guys
And if you believe that.... you'll believe anything :proud:
http://www.loonapix.com/
http://i1214.photobucket.com/albums/...2767562484.jpg
Mini update time
Go a few quid over the christmas period, as i'm sure a number of us did, with the instruction to not just put it in the bank but to buy something I wanted with it. So here is what I wanted :proud:
http://i1214.photobucket.com/albums/...1-05231837.jpg
Left to right it is...
1st: Cant remember what it was called when Will had it (Cyclone maybe?) I remember seeing a video of it a long while ago, but really just to fit in with my teaching stuff and it uses things that will be both new and recognisable to the kids, also fits nicely as far as weight is concerned.
Also, it looks so much like Cicatrix will with the drum pod attached and even has the same multi-weapon system.
2nd: 3700mAh batteries for Eric Jr. It needed them, self explanatory :lol:
3rd: SBEC for Cicatrix as its old one is in Rover
Thinking of a name for the BW, as it is so similar to Cicatrix but 10x smaller, anyone reckon Minitrix would be a decent enough name? Or maybe something like Cicatrice (means scarring, Cicatrix means Scar) Thoughts/suggestions welcomed :D
what about
c l i t 'o'trix
I did contemplate putting an offer in for that beetle but figured I'd bought enough stuff already! Nice to know I've got a local BW to compete against :)
What about Full o' Trix. Or since Cicatrix means Scar, and this is a smaller version, how about Paper Cut?
*awaits Billy being banned for an offensive, yet creative and hilarious, name suggestion* :lol:
The antweight guys would fall out with me if I called it that :lol:
I was considering building a robot called William the Great for any AWS's up here just to wind them up :proud:
I did figure there would be a few full combat car park matches between us when we're both done with our BW's Jamie, just not that car park at my place thats on like a 45degree angle :D . Like those ideas too Jamie, think i'll open it up to my FB people too and see if any of them care enough to comment :lol:
you must have a laugh now and then :)Quote:
Originally Posted by k_c_r
Oh aye, I'm always happy to have a laugh and take no offence with that name. But I know some people take forum etiquette more seriously than others. Personally, I don't give a flying...err...duck :)
Aye i'm not at all bothered by a name, call your robot whatever you want I say. You'll be pleased to know that Jamie has added your suggestion to my FB post too :lame: :lol:
hahahah good effort :)
If by 'some people' you mean the antweight forum, its the older generation that have the problem, and its because we tend to have more younger roboteers at our events, hence they are a bit touchy about it.
Since your beetle is a drum bot, I was thinking of the name Snare.
Call it the yellow pearl. (we all must beware of the yellow pearl) :mrgreen:
You could call it contusion- meaning a bruise in French
French?!? I want it to win battles though :lol:
Lol :lol:
What language is cicatrice in? Google translate says it's French for scar
Latin originally, but it can be used in English too
Ok then, frendo or suggillo or Contribulo or livor all mean to bruise in Latin
What's the most you ever lost on a coin toss? Frendo..
http://www.youtube.com/watch?v=5-H1Buew8Qg
Right, trying to run this BW off of 2 different voltages, one esc on 7.4v and the other on 14.8v from 2 2s lipos. Can I just do this by wiring both batteries up to one esc and only one of them to the other or will discharging them at different rates make them upset?
lol you love to have different speedos in one bot different voltages lol
purely a statement no help i know :P
I do like making them complicated yes :lol: .
Cicatrix worked best when it was at its most complicated though, so sticking with that theory. With any luck it should be a lot simpler this year though.
I can't talk from experience (more just what I remember reading on here) but I think the different discharge rates aren't advised. Although if you balance charge each pack separately I don't think it should make much difference but again, I can't say for sure.
What about just having your 14.8V operating voltage and then using either tx or esc functions to limit the travel (dual rates etc) so that the component running at 7.4V isn't seeing the full voltage?
You are correct Jamie, it is bad to have cells in series with different tap off points for different voltages. Main reason being is that certain cells will become more discharged than others. The ones with the lower discharge then have to take up the slack so to speak to keep the whole system operating and they will try and charge the higher discharged cells. Not a great situation to be in.
Mind you, a while back as a last minute resort I had to use a combination of A123 cells and nicads (basically what I had left) to get hornet 2 back into the arena. It worked but I was just waiting on the smoke rising out of the battery compartment. What probably helped was that the whole system ran on the same voltage, no tap offs anywhere.
Cheers guys I thought as much.
All the cells I am using are the same, two 2s 1500mAh lipos so battery chemistry wont be an issue, its just the discharge rates. Its a Sabertooth 10a I want to limit, so i'll have a look and see what all the dipswitches do on it as I dont think the radiolink gear that robot is using will have anything fancy going for it like duel rates. Suppose I could go low-tech and just physically limit where the sticks can go with a chunk of plastic if it comes to it?