RogueTwo Robots

[PJ-27]

Re: RogueTwo Robots

I really quite like Flam, so will probably go for that.

Sweet!

[RogueTwoRobots]

Re: RogueTwo Robots

Update

Got my Botbitz ESCs today. Crazy fast service; paid for them on Saturday (12th), got dispatched Monday and arrived today. Absolutely no complaints about Botbitz or the Australian air mail service! These 10A ESCs are nice and compact, roughly the size of my thumb:



The lipo battery will sit behind the drive motors and then these ESCs will fit behind them, tucked away right at the back. Haven't tested them out yet though so might give them a try on Flatulence just to see that moving, then transfer them across to Flam for a test of those 1000rpm motors. Managed a couple of hours in the Cave of Blunders tonight and got the drive and weapon motors mounted:



Current weight is 444g, but I'll need to make up some aluminium re-inforcing sides as there's a little too much flex in the chassis for a spinner at the moment. Drum tube is ordered so just waiting for that to get sent. More pics of both robots to follow over the weekend.

[RogueTwoRobots]

Re: RogueTwo Robots

Update

Test video of Flatulence:

http://www.youtube.com/watch?v=B7swFoK_wYQ

[RogueTwoRobots]

Re: RogueTwo Robots

Update

Made progress on the MDF robot today, so it's now up and running (happy PJ? :wink: )
Gave it a quick initial test drive and found that the middle non-powered wheels were generating unnecessary friction and making the robot difficult to turn, so dropped them and just gone for 4WD. Definitely doesn't look as cool though.

Some of the wiring started:



Everything in place:



I've slanted the front as well now, so that when it's the right way up it's shaped more like a tank. This was mainly because the bits that previously jutted out at the front were getting bashed and wrecked easily. The mod also allows a bit more freedom when driving over uneven surfaces.

Threw together a quick video as well:

http://www.youtube.com/watch?v=bksDX2q64yM

Need to decide where to go with it now. The plan is to stick some sort of lifting weapon on the top, with the rough shape/overall look to be like some sort of agricultural machine (load-all/tractor thingy) but it's whether to try and get that ready for Edinburger or just make a steel/HDPE shell to go over it and enter it as an invertable rambot.

Also, need suggestions for a name. Thinking along the lines of something cheesy relating to wood but struggling to come up with anything decent.

[harry hills]

Re: RogueTwo Robots

that is brilliant!!

[razerdave]

Re: RogueTwo Robots

Are they 12v motors or 24v, and what are they actually running on ?

[RogueTwoRobots]

Re: RogueTwo Robots

Cheers Haz. The motors are 12V and they're running on 19.2V, seems faster in person than it appears in the video. But it's a bit too fast to work properly off-road at the moment (just sends stones everywhere and is difficult to control) so might try dropping the voltage down to 12V.

[jonny]

Re: RogueTwo Robots

you could call you could call it woodatrix or cicawood or even wooden cicatrix

[Anttazz]

Re: RogueTwo Robots

you could call you could call it woodatrix or cicawood or even wooden cicatrix

Can call it that if you want, I don't see me building one anytime soon. But are you getting confused between myself and Jamie?

[jonny]

Re: RogueTwo Robots

No, it just looks a lot like cicatrix, but wooden.

[PJ-27]

Re: RogueTwo Robots

(happy PJ? :wink: )

Yes Jamie, yes I am... Took your time though...

Are those Victor ESCs in there? Looking to get the cheapest possible for BItzaWood.

[Laser]

Re: RogueTwo Robots

victors are quite expensive

I think the 85a esc work out at about £40 each
http://www.botbitz.com/

[razerdave]

Re: RogueTwo Robots

I would imagen he had them as spares because he uses to run drumroll on a speed 900/victor combo.

[RogueTwoRobots]

Re: RogueTwo Robots

Yeah got a pair of Victor 883's controlling the robot for now. Not really ideal if these robots are supposed to be destroyed easily! But they'll do for Edinburgh at least, will probably get some Botbitz controllers to run it eventually.

Got these 883's on eBay; the 885 I used to control the Speed 900 drum is still goosed from when it went up in flames at the 2011 champs. Haven't yet got round to getting it sent back for (possible) repair.

[RogueTwoRobots]

Re: RogueTwo Robots

Update

Did some more work on the wooden robot this weekend. After spending many hours last night looking for inspiration for a name - a mission that covered Greek mythology, Norse gods and dinosaurs among other things - I've settled on Reaver. Nothing particularly exciting I know (the name comes from a race of cannibalistic humans in the Firefly TV series) but it'll do.

Anyway, started work on a lifting weapon to mount on top of the chassis. In complete contrast to the use of wood, the majority of the weapon is fabricated from 3mm steel plate and angle. To begin with, I welded two lengths of L-angle together to give me a U-channel, and added some hinging points for the lifting arm:




I then dissected a car scissor jack for its threaded rod and nut. I welded the threaded rod on to a drill gearbox shaft, drilled and tapped two M8 holes in the side of the nut, and fitted a couple of bolts to hold some linkage arms:




Also fitted a nylon block to support the end of the threaded rod, and then added some more lengths of steel angle to make up the lifting arms:




Still need to weld on some bits at the front to finish it off, such as forks and possibly small outriggers. Should be done for Edinburgh.
Total weight with all that steel plonked on top is 9.7kg, so just under 4kg left for adding bits and bobs. And although this was only meant as a quick and easy wooden class bot, I'm sorely tempted to rebuild the chassis out of Nylon to make it more permanent. I wasn't expecting to develop it to this degree but it'd be a nice whiteboard/non-spinner machine to have in the clan.