Cheers Dave. Wasnt sure if because they were originally brushless it would still require any of that, I mustve gotten the information mixed up along the line somewhere.
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Cheers Dave. Wasnt sure if because they were originally brushless it would still require any of that, I mustve gotten the information mixed up along the line somewhere.
ESC news to come, I tested them today but they're still not working too well, so i'll give them another try or two over the next few days and see how they perform.
In other news, the something bigger to report is coming on nicely and is passed the planning stage and has a set deadline of 8th September (if anyone can work out why, I will applaud them :D) for a trial. Will disclose all when I can be a bit less vague about it, but if it all goes well I think it'll be good for the community as a whole.
Gentlemen, the time is upon us.
Blurb from the website:
Scot-Bots are a group set up by Jamie McHarg and Tony Smith who's aim is to promote engineering though Robotics. Using their custom built arena and robots they take part in various public events such as exhibitions, open days and galas as well as providing similar services for birthday parties and school events around Scotland.
The team are based in the west of Scotland and will begin by primarily promoting Robotics within the next generation of Scottish engineers at various public events. Soon, they will make their Scot-Bot Featheweight robot kits available for purchase after they have been fully trialed and tested. These kits will not only be suitable for taking part in Scot-Bot events but will also be able to take part in Robotic Combat events provided by event organisers such as Robots Live, Robochallenge and Roaming Robots. Once you have your basic kit, you can either upgrade it yourself or purchase a variety of upgrade packages available from Scot-Bots to make your robot as powerful as it can be. You will also be able to choose from a variety of colours and system setups. We will hope to have these kits available for purchase before the next large scale event held by one of these organisers in Scotland.
Please get in touch if you would like more information we will be happy to assist you.
So there we go! Anyone local to us (ha!), we'll be in Westerton, East Dunbartonshire this September to prove the concept. Designs and pictures of all important things mentioned will follow. Hope this at least stirrs some excitement amongst the community :)
Join up on the FB pag to hear more, very basic so far but it'll get there over the next month or so, then the official website will be released too.
http://www.facebook.com/ScotBots
Sounds awesome! Wish you every bit of luck and if I can help in anyway just shout.
Just pointing out that should be 'Built'.Quote:
Originally Posted by Scot-Bots
Ahhh yes, oops. Will get it changed, cheers :D
i wish the very best of luck to ya
Coolio 8)
Yeah after going along to the Rampaging Chariots event, we felt there was an opportunity to follow a similar vein and use robotics as a means of encouraging the up-and-coming generation to consider engineering and technology as a possible career path. Roaming Robots, Robo Challenge and Robots Live are already doing a great job down south but there's not as much coverage up here so we've opted to try and push it a bit more to those north of the border.
Our aim with the kit is to try and keep it as simple as possible but as close to the weight limit as possible (in its fullest configuration) as we've noticed that many people entering with kit robots tend to get pushed around easily due to being a few kilos underweight. I'm sure that doesn't discourage them too much but hopefully by taking the weight of our kits up closer to the limit, it can give them a chance to dictate a battle more.
Organising this side of robotics is of course new to us, and things won't go flying off the start line as we've both got full-time jobs and other commitments. But we hope to move at a steady pace and see how things go as we progress. We're certainly looking forward to it :)
Wow! This build thread was way down the list!
Now for an update that PJ will be proud of :lol:
Scot-Bots attended this years UK Champs to test our new kit bots and during the course of the event we inherited Kaisers old chassis that Ceri no longer needed:
http://i1214.photobucket.com/albums/...0-27115520.jpg
It's a bit far gone for Jamie to hang on his Robot Wall of Fame in his shed so I had a rummage through it and went to town on pulling out everything that I thought could be given a new life in another robot in the future with some pretty good results:
http://i1214.photobucket.com/albums/...0-27121634.jpg
Managed to salvage a load of screws, couple of strips of Ali, UK Robotics motor mounts, locking bar, lifting forks, sharp edge protection and drill motor with welded on threaded rod and nut. The motor was locked up when I got it but 10mins of work and a quick clean at the Champs got it working again, i'm going to strip it down again and clean it fully/add some fresh grease but at least I know it works. This will now form the basis of the lifter mech that was originally planned for Cicatrix when it was originally designed 2/3 years ago, I probably won't use the lifter in competition but it will be good for the Scot-Bot events.
The scrap that didn't make the cut:
http://i1214.photobucket.com/albums/...0-27121708.jpg
And a little present for Jamie to remember his favourite machine by :proud: :
http://i1214.photobucket.com/albums/...0-27121047.jpg
I approve!
Right, week off from work beginning next friday, a good chance to catch up on my poor neglected robots after the workshop is now free from its commandeering for building purposes. Looking for advise on a number of things to put into my new robot.
1. I'm thinking Botbitz 85A ESCs, but has anyone successfully used them at 24v? I know they're rated at 24v but whether they're proven to last on fully charged 24v batteries is something i've been wondering about. If they're ok they'll be getting ordered.
2. What type of wheel setup do people suggest for the new Gimsons? Nut insert or the Technobots ones? Looking for some around 75mm. The design is somewhat flexible at the moment so suggestions welcomed.
3. Best way of controlling a solenoid valve, Servo and switch? Battleswitch? Something else? Have used both but would like to know what people think is best.
Hopefully by 2 weeks time i'll have something a bit more interesting to post :)
I have read of Botbitz not running well on 6S batteries, 5S being fine
Would be more than 6S, 24v NiMH
The botbitz 85a handles 6s fine. Am currently running that set up at the mo
Sweet, cheers Dan :)
Also, before I buy and risk making a mess of it, can you confirm that this is the adapter i'd use to attach Banebots wheels to a GR02?
http://www.technobotsonline.com/banebot ... -bore.html
3mm bore.
Oops, clicked in the wrong one. Although it turns out the one I was going to click on is 2mm and not 12 as I believe it is suppose to be? Can't see them on there?
Closest thing I can see on the Technobots website is this:
http://www.technobotsonline.com/banebot ... -bore.html
In new money, the 1/2 bore is 12.7mm. The shaft of a GR02 is 12mm so that may be a bit too small; the adapter could rock a little, resulting in loosening grub screws and wheels falling off. Then again, it could be okay, could be worth buying them to try, although at £8.65 each it's not the cheapest might-not-work experiment.
Is there a better way to attach wheels than that closer to the bearing? How is it generally done?
http://www.fightingrobots.co.uk/foru...p?f=111&t=5549
any use? this is the method i am planning to use for Massacre.
I had that thread in mind when making my last post, but even though I replied in it, I couldn't remember where to find it (not that I looked much).
That solution seems pretty robust. Alternatives would probably involve some sort of machined custom hub that was drilled and pinned through the shaft, with the wheel then being fixed to the hub.
Hi Tony, I've got some 12mm bore hubs that might be just what you need, they won't be going on the website for a couple more weeks but I'll add two to your order free of charge for dispatch tomorrow.
Seeing as I'll be meeting him at the weekend and could pick stuff up, feel free to add an 18V GLA-S 100mm stroke actuator to his order free of charge too Ewan ;)
Hey whilst you're at it Ewan I'm looking to get my hands on two actuators of that kind too so if by any chance you happened to throw those into the deal also free of charge that would be really really good. :D :D
Thanks Ewan you're the best! :) :) :) :D :)
Nice try guys!
You're a gentleman Ewan, thats awesome :D Any chance you could post/PM, if you're keeping them under wraps, me some dimensions of them so I can get some appropriate wheels ordered ready for my build week in a few weeks time?
Spend the day working out a plan for 2 weeks time. Hoping to attend Barnsley with some Feathers and also have an event in March with Scot-Bots so i've a week plus the odd day to get them going for those.
Only a small amount of work needed for Rover and Jr.
Rover: Not really too suitable for the Scot-Bot events with the bang-bang speed control style the way it is and the batteries were from a drill so didn't last too long. After about 90s-2mins it would go into a death spin and be totally uncontrollable. So i've a set of ESC's, either 85A BotBitz ones or an XXL to put in there and change the batteries from 16.8v and roughly 100mAh to 14.4v 3700mAh.
Eric Jr: Have changed from 3700mAh 14.4v to 3700mAh 12v, pretty much because I have a lot of 12v batteries and not a lot of 14.4v and Rover needed a bit more speed to make it interesting. Also easier for Rover to drive around for longer more safely. Also needs some sort of electrical gremlin sorting out whereby each contact with anything makes the robot die, but there is still power and the robot works when the link is removed and replaced. I'm just going to tighten each connection and hope that helps. Any other suggestions?
Cicatrix: WIll maybe get the lifters set up that I have...maybe.
And then to Eric Jr2 which gets a post of its own....
Eric Jr2:
Drive: 2 x 24v Gimson GR02's
ESC: XXL or BotBitz 85A (will test both, depending on my judgement of their performance)
Battery: 24v 3700mAh NiMH
Weapon: FP Pneumatic flipper
Radio: Spektrum DX5e with either Spektrum or Orange rx
Have ordered a load of parts that'll hopefully be here for a build day. Will debut at Barnsley if all goes well.
So far:
http://i1214.photobucket.com/albums/...31E8B178DF.jpg
Nice that you got hold of old Rip Evo, always was a good robot. Personally I would recommend the BotBitz ESCs over the XXL, they seem to be preferred by many people.
Can't wait to see how it turns out, Tony!
The problem could be the link itself ? I have used a tamiya connector as a link before and if the robot jolted it cut out.
I run an XXL in Cicatrix and its so smooth compared to the BotBitz ESC's in the kits even though its not an official XXL. Albeit they're the 25A versions of the BotBitz but we'll see what happens. I've ordered a set of both anyway, as one will get used in Rover. Voltage wise I may be pushing the BotBitz ones a bit high at 24v nominal too.
Good call Max, i'll give it a try tomorrow although I have a feeling I already tried that. Can't hurt to do so again :)
The BotBitz are rated to 6S which when fully charged are 25.2V so should be fine. If they get hot consider some additional cooling.
Not a bad event really, Cicatrix qualified for the top 18 and Usain Bot missed qualifying by 1 point. Always good to catch up with the robot crew as time/money don't let us attend too often. Cicatrix will still be competing at Scot-Bots event and events that I don't have anything else ready for but really its a solid machine, no repairs made all weekend, but really want to compete with robots with a weapon in future.
Slight bit of damage on the front of Cicatrix' scoop from Binky:
http://i31.photobucket.com/albums/c3...psf7211aab.jpg
http://i31.photobucket.com/albums/c3...ps95b75364.jpg
Hopefully i'll have Eric Jr2 running for Edinburgh and get a chance to run it properly, not even too sure if I want a FP flipper as it'll only come out on special occasions but will try it at Edinburgh and go from there. Will get a bottle for it over the next few weeks and make sure I can fit the shell on then it'll be a matter of waiting for June for a test.
What armour is that scoop?
5/6mm mild steel
Has been very quiet on here, but this is what's been keeping me busy:
http://youtu.be/6uN5y0vNhlo
It's a bit scary that your 5mm steel got damaged by a spinner, it's not filling me with confidence sitting here with my 2x2 based robot lol :)
Jamie and I have finally got around to fully R/C-ing the Dalek since I last showed my face on here, Gimson actuator on the front wheel. Can be fairly easily taken off if we ever want control from inside the machine, next step is to R/C up the water gun and voice box. Easy to do, but getting the time to do it is the difficult part when both of us are in the process of moving house away from our workshops!
Sorry, a bit blurry:
http://i1214.photobucket.com/albums/...psre1egz0z.jpg
Close up of the mechanism:
http://i1214.photobucket.com/albums/...ps9zuedlmd.jpg
Just a shame I didn't account for lateral movement of the actuator when making the mount :lame:
Got a picture from the other week. Positional feedback and a faster actuator would be more desirable but this will do for now:
Attachment 4200