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Off-Topic => Real Robotics => Real Robotics Discussion => Topic started by: Natster-104 on April 26, 2014, 11:19:39 AM

Title: The Lego Robotics thread
Post by: Natster-104 on April 26, 2014, 11:19:39 AM
Well I did mention in the Lego Robot Wars thread something about me buying some Lego motors, but what I didn't mention me making some bots, we'll here are some:
An old design, still proud of it though

(https://gametechmods.com/uploads/images/45385image.jpg)

And here is the later version, OF WHICH I made today :D :

(https://gametechmods.com/uploads/images/66354image.jpg)

(Please excuse the backgrounds)

What are your thoughts?
Also, feel free to post any Lego robot things you like :)

Title: Re: The Lego Robotics thread
Post by: KOS on April 26, 2014, 11:54:17 AM
(https://gametechmods.com/uploads/images/62007clamp.png)


^ Mine


2WD M drives with cogs (faster) XL weapon motors.
Title: Re: The Lego Robotics thread
Post by: Natster-104 on April 26, 2014, 11:55:36 AM
Niiice, always liked the claw robots

Edit: can never seem to get a powerful enough weapon, I definately need some more parts for armour as well as the weapon.

Edit 2: what motor would be best for a flipper?
Title: Re: The Lego Robotics thread
Post by: KOS on April 26, 2014, 12:16:56 PM
Definitely 2 XL motors, to make all motors even more powerful, buy the rechargeable battery packs.
Title: Re: The Lego Robotics thread
Post by: Badnik96 on April 26, 2014, 12:24:04 PM
Your crusher's pretty cool KOS.
Title: Re: The Lego Robotics thread
Post by: Natster-104 on April 26, 2014, 01:50:15 PM
Update (Now with flipper!)

Front:

(https://gametechmods.com/uploads/images/11810image.jpg)

Back:

(https://gametechmods.com/uploads/images/76785image.jpg)

Flip:

(https://gametechmods.com/uploads/images/49226image.jpg)

Good:
Fast
Can Self right
Good flipping ability
Sharp wedge damages other bits
Bad:
Flipper is inefficient

Also another note: I forgot to mention I can make this do wheelies in its base chassis as well as with the flipper.

Any thoughts towards it?

Title: Re: The Lego Robotics thread
Post by: R1885 on April 26, 2014, 02:18:11 PM
Reminds me of Gravity.
Title: Re: The Lego Robotics thread
Post by: RFS on April 26, 2014, 10:17:15 PM
I had the privilege of toying with some Lego Mindstorms about fourteen years ago or so. I was on one of the inaugural high school teams that adopted the "Mindstorms curriculum". :P My knowledge in the field of radio controlled robotics pretty much got me a "bye" into the high school team; I had been the event organizer of a robot combat event series at the middle school so the instructor who was in charge of the Mindstorms ended up "using" me as a way to add some legitimacy to the club and to hopefully attract former competitors from my event.

The issue here is that he recruited me -- someone whose experience in the field of robotics and radio-controlled hobbies consisted entirely of combat -- to stir up interest in a robotics club that was the complete opposite: autonomous task completion.

I hated it so much, however that did not stop me from remaining with the club simply to build Lego versions of combat robots. The instructor asked for "Twilight Foundry" and he got it; it was during this period of time I built the first version of the famed "Tha Thumperizer": https://wiki.gametechmods.com/index.php?title=File:THUMP (https://wiki.gametechmods.com/index.php?title=File:THUMP)!.JPG

Unfortunately, that's the best and only picture I have of the robot. The inaugural Thumperizer was not a combat robot since the "event" it was meant to compete at did not allow combat. Instead, it was programmed by a second team member to perform some gyroscopic stunts and flips while the RCX played a hip-hop music loop that a third teammate wrote. Thumperizer was put into an open class for "show bots" and wowed the meager audience with its spectacle. I'm not going to upsell it, the first/Lego Thumperizer sucked. It only served to fuel a design I eventually wanted to pursue in actual combat but was never able to build, sadly.

The rest of my Lego robots don't have pictures, I only have stories to tell about them instead. Since this thread is for pics I won't bore you with tales of high school-aged me being a complete ass.
Title: Re: The Lego Robotics thread
Post by: Natef on April 26, 2014, 10:20:46 PM
RFS, the link is broken :(

this is it, right? https://wiki.gametechmods.com/images/thumb/e/e7/THUMP (https://wiki.gametechmods.com/images/thumb/e/e7/THUMP)!.JPG/200px-THUMP!.JPG
Title: Re: The Lego Robotics thread
Post by: RFS on April 26, 2014, 10:22:35 PM
There's an exclamation point in the URL (because the sticker on the side of the robot says "THUMP!") so it looks like it's a broken link unless you manually copy and paste it. D:
Title: Re: The Lego Robotics thread
Post by: Natster-104 on April 27, 2014, 04:23:32 AM
Finally can get a link set up for all you to get your own parts if you want, remember to change it to your own nation :smile:
Lego: Pick a brick (http://shop.lego.com/en-GB/Pick-A-Brick-ByTheme?_requestid=632793)

To look for the motors, there's a search tab in the top right, search for:

Lego Power Functions Motors

and they should pop up  :smile:
Title: Re: The Lego Robotics thread
Post by: Natster-104 on April 27, 2014, 08:06:22 AM
A quick question, do you reckon it is possible to make an axe with that wedge design?

Edit: Also, have you got any name suggestions for my flipper?
Title: Re: The Lego Robotics thread
Post by: KOS on April 27, 2014, 08:10:01 AM
Flip those motors around, put an axe on. Simple :D
Title: Re: The Lego Robotics thread
Post by: Natster-104 on April 27, 2014, 08:12:41 AM
I was thinking about that, but that means The front will be a bit bulky, I'm ordering some M motors soon though, should I wait?
Title: Re: The Lego Robotics thread
Post by: Natster-104 on April 27, 2014, 10:38:04 AM
DP:

Just found the technic deal of the century:

http://www.ebay.co.uk/itm/Lego-Technic-500g-1-2-kg-Mixed-Bricks-Pins-Axles-All-clean-and-genuine-bulk-/160711759722?pt=UK_Construction_Toys_Kits&hash=item256b2ad76a (http://www.ebay.co.uk/itm/Lego-Technic-500g-1-2-kg-Mixed-Bricks-Pins-Axles-All-clean-and-genuine-bulk-/160711759722?pt=UK_Construction_Toys_Kits&hash=item256b2ad76a)

Ebay UK btw
Title: Re: The Lego Robotics thread
Post by: RFS on April 27, 2014, 12:06:09 PM
DP:

Just found the technic deal of the century:

http://www.ebay.co.uk/itm/Lego-Technic-500g-1-2-kg-Mixed-Bricks-Pins-Axles-All-clean-and-genuine-bulk-/160711759722?pt=UK_Construction_Toys_Kits&hash=item256b2ad76a (http://www.ebay.co.uk/itm/Lego-Technic-500g-1-2-kg-Mixed-Bricks-Pins-Axles-All-clean-and-genuine-bulk-/160711759722?pt=UK_Construction_Toys_Kits&hash=item256b2ad76a)

Ebay UK btw

That guy has made over L16,000 from that single listing, which is equal to almost $27,000. Holy sh**.
Title: Re: The Lego Robotics thread
Post by: Natster-104 on April 27, 2014, 12:36:54 PM
DP:

Just found the technic deal of the century:

http://www.ebay.co.uk/itm/Lego-Technic-500g-1-2-kg-Mixed-Bricks-Pins-Axles-All-clean-and-genuine-bulk-/160711759722?pt=UK_Construction_Toys_Kits&hash=item256b2ad76a (http://www.ebay.co.uk/itm/Lego-Technic-500g-1-2-kg-Mixed-Bricks-Pins-Axles-All-clean-and-genuine-bulk-/160711759722?pt=UK_Construction_Toys_Kits&hash=item256b2ad76a)

Ebay UK btw

That guy has made over L16,000 from that single listing, which is equal to almost $27,000. Holy sh**.

Whaaaaaaat :eek:

all I can say is gg sir gmtoys1610  :claping
Title: Re: The Lego Robotics thread
Post by: Bubbleman on May 09, 2014, 03:24:01 PM
If I just throw my Youtube channel link here, i'll leave you to watch and comment as you please. Please do comment, mind.
https://www.youtube.com/user/FatherSplat (https://www.youtube.com/user/FatherSplat)
Also, here's the link to the website I made for it:
http://legorobotwarslightweights.weebly.com/ (http://legorobotwarslightweights.weebly.com/)

If you want me to put up any pictures for ease of viewing, I shall. :3
Title: Re: The Lego Robotics thread
Post by: Natster-104 on May 09, 2014, 03:31:19 PM
If I just throw my Youtube channel link here, i'll leave you to watch and comment as you please. Please do comment, mind.
https://www.youtube.com/user/FatherSplat (https://www.youtube.com/user/FatherSplat)
Also, here's the link to the website I made for it:
http://legorobotwarslightweights.weebly.com/ (http://legorobotwarslightweights.weebly.com/)

If you want me to put up any pictures for ease of viewing, I shall. :3
Nice, I shall look into these, also does anyone want me to do a tutorial on how to make a strong bot design?
Title: Re: The Lego Robotics thread
Post by: Bubbleman on May 09, 2014, 03:37:11 PM
If I just throw my Youtube channel link here, i'll leave you to watch and comment as you please. Please do comment, mind.
https://www.youtube.com/user/FatherSplat (https://www.youtube.com/user/FatherSplat)
Also, here's the link to the website I made for it:
http://legorobotwarslightweights.weebly.com/ (http://legorobotwarslightweights.weebly.com/)

If you want me to put up any pictures for ease of viewing, I shall. :3
Nice, I shall look into these, also does anyone want me to do a tutorial on how to make a strong bot design?

Should we collaborate? You seem to have a different building method to me, I build for destruction and use old technic bricks, whereas you seem to use new-technic and are building for strength.
Also, what weight are they? There are two, Lightweights (My class - 500g) and Heavyweights (The original - 850g). If it's a heavy, you way want to gear your motors down for power in the flipper rather than speed. Otherwise, good.

EDIT: No, wait, that has to be heavy. You need two use two batteries for 4xl motors, as one battery powers four m motors or two xl motors. I'm guessing around 650g?
Title: Re: The Lego Robotics thread
Post by: Natster-104 on May 09, 2014, 04:21:37 PM
Tbh I haven't ever weighed it since I don have a decent enough set if weighing scales, but it's quite heavy, I'd say it's around a kilo
Title: Re: The Lego Robotics thread
Post by: Natster-104 on May 09, 2014, 04:24:11 PM
DP:
Just thought I'd mention, you could make my type of design with the old technic and it in fact would be better because you can attach armour plates and stuff

A MAJOR EDIT: An idea has just sprung to mind, how about we each do a tutorial, you can do about the old technic and ill do the new one?
Title: Re: The Lego Robotics thread
Post by: Bubbleman on May 09, 2014, 04:33:09 PM
Front:

(https://gametechmods.com/uploads/images/11810image.jpg)

Back:

(https://gametechmods.com/uploads/images/76785image.jpg)

Well, the four xl motors are 276g (round to 280), the two recievers come to around 50g, and the battery (assuming the worst) is 275g. The wheels look like 70g (I have a pair) and I'd estimate the body to be 175g at most, giving a total of 850g(!). Heavier than I thought.
Out of curiosity, if you have kitchen scales, get a rough weighing, I'm really curious to see how accurate I am. :P

DP: Just thought I'd mention, you could make my type of design with the old technic and it in fact would be better because you can attach armour plates and stuff

A MAJOR EDIT: An idea has just sprung to mind, how about we each do a tutorial, you can do about the old technic and ill do the new one?
The armour plates do nothing but look good when they fly off; the add no structural integrity whatsoever.
And sure, I'll make one when my camera has finished charging (when I actually find the charger >.<). As a warning though, sturdy bots are generally easy to make.
Title: Re: The Lego Robotics thread
Post by: Natster-104 on May 09, 2014, 04:43:54 PM
I don't actually have YouTube, but I can do a tutorial on GTM with pics, but this sounds like its on its way!

850g eh?  Trust me the chassis is much heavier than it looks but I'll see where I can find and dust off some weighing scales around the house... Tommorow :), that curiosity might have to wait a little longer sorry

Well some armours better than none and it adds realism, if you have some indistructable machine of death fighting it's not gonna be that fun, believe me I've tried it :rage

Also, just been looking at some vids, how do you get pistons? Hurricane's flipper is badass
Title: Re: The Lego Robotics thread
Post by: senstro on May 09, 2014, 04:49:17 PM
Looking at the flipper. you could try having springs or the suspension springs. Have the motor set to force the flipper down then signal it to turn off. This would cause a build up of energy released quicker than the electric motors would allow on there own.
Title: Re: The Lego Robotics thread
Post by: Natster-104 on May 09, 2014, 04:53:13 PM
Looking at the flipper. you could try having springs or the suspension springs. Have the motor set to force the flipper down then signal it to turn off. This would cause a build up of energy released quicker than the electric motors would allow on there own.
Thats a really good idea, but in reality, it burns out the motors completely and with the Lego coils I have, it doesn't spring much  :(
Title: Re: The Lego Robotics thread
Post by: Bubbleman on May 09, 2014, 04:54:59 PM
Also, just been looking at some vids, how do you get pistons? Hurricane's flipper is badass
You can get pneumatics by buying one of the current technic models that use it, or if you don't have £70 you can get them from an american site called Bricklink. They are sold separately, so you'll have to buy valves, pistons, a pump, air tanks, pipes etc. They aren't too powerful, mind you. Pressure (you'll find that in one of my latest videos in which it isn't named) is almost the pinnacle of power really, if it used the largest pistons it would be better however it would only flip twice or so then. Its all about balance.

Looking at the flipper. you could try having springs or the suspension springs. Have the motor set to force the flipper down then signal it to turn off. This would cause a build up of energy released quicker than the electric motors would allow on there own.
Sorry to burst your bubble, but quick-release mechanisms are large and difficult to miniaturise, and the motor itself would resist the release of the energy from the springs/rubber bands. It isn't possible at this level, but at larger scale it is; search for LegoMasterFreak or Lego Gladiators on YouTube and look at his flippers. Remember also those are 3x the size and almost 4x the weight if I remember correctly.
Title: Re: The Lego Robotics thread
Post by: Natster-104 on May 09, 2014, 05:12:40 PM
I see, I will look out for them, thanks :mrgreen:
Title: Re: The Lego Robotics thread
Post by: Bubbleman on May 09, 2014, 05:26:07 PM
I see, I will look out for them, thanks :mrgreen:
No problem :D
Keep us all posted on any updates :3
Title: Re: The Lego Robotics thread
Post by: Natster-104 on May 10, 2014, 10:00:30 AM
Drum roll please.....
My bot weighs.......

784 Grams!!!

Actually rather lower than I expected, gonna build a new chassis today, Stay tuned for updates :)
Title: Re: The Lego Robotics thread
Post by: kill343gs on May 10, 2014, 02:01:59 PM
i mean this is kinda real robotics i guess maybe sorta
Title: Re: The Lego Robotics thread
Post by: Philippa on May 10, 2014, 02:15:25 PM
i mean this is kinda real robotics i guess maybe sorta
Meh, I wouldn't call it that.
Title: Re: The Lego Robotics thread
Post by: Bubbleman on May 10, 2014, 02:29:31 PM
Its real robotics, just not real good robotics. ;D
Title: Re: The Lego Robotics thread
Post by: Natster-104 on May 17, 2014, 04:18:13 AM
Have got some photos, the tutorial should be out in the next week or so
Title: Re: The Lego Robotics thread
Post by: Clickbeetle on May 23, 2014, 10:12:57 PM
I want to see somebody build a Lego shell spinner with those UFO flying saucer pieces.

Sorry to burst your bubble, but quick-release mechanisms are large and difficult to miniaturise, and the motor itself would resist the release of the energy from the springs/rubber bands. It isn't possible at this level, but at larger scale it is; search for LegoMasterFreak or Lego Gladiators on YouTube and look at his flippers. Remember also those are 3x the size and almost 4x the weight if I remember correctly.

I made a bungee cord-powered hammer bot once that was smaller than the LRW bots.  I had a loop (driven by a worm gear) that came down and hooked over the hammer, then pulled it up.  When the hammer got pulled up far enough, the loop slid off the hook and the hammer snapped down.  It was slow and unwieldy and self-destructed a lot, but it was pretty cool.
Title: Re: The Lego Robotics thread
Post by: Bubbleman on June 08, 2014, 03:56:20 PM
I want to see somebody build a Lego shell spinner with those UFO flying saucer pieces.
Sounds fun, but sadly, the closest we could get to a shell is a cage, as Lego is as limited as minecraft with regards to the shapes available. I'd try, but I don't have the pieces, nor money to buy them.

Anyway, failed bot:
Was supposed to be an upgrade to stag, but the crusher arm bends and pokes more than stabs. Back to the drawing board.
Title: Re: The Lego Robotics thread
Post by: Natster-104 on June 08, 2014, 04:06:16 PM
I want to see somebody build a Lego shell spinner with those UFO flying saucer pieces.
Sounds fun, but sadly, the closest we could get to a shell is a cage, as Lego is as limited as minecraft with regards to the shapes available. I'd try, but I don't have the pieces, nor money to buy them.

Anyway, failed bot:
Was supposed to be an upgrade to stag, but the crusher arm bends and pokes more than stabs. Back to the drawing board.
Still looks cool, could you make the crusher powered by gas and pistons? I think if you could get a good force into that, it could easily destroy some bots

Also, sorry for the lack of updates on the tutorial, I just haven't been able to find the time to update it
Title: Re: The Lego Robotics thread
Post by: Badnik96 on June 08, 2014, 05:36:30 PM
Instead of making the crusher one long bit, try adding some supports where it angles. Maybe that'll help it keep from bending.
Title: Re: The Lego Robotics thread
Post by: Natster-104 on July 18, 2014, 10:08:58 AM
What we made on the last day of robotics club (On wednesday :P):

Me and my friend:
(https://gametechmods.com/uploads/images/65198legobot electronics club 1.jpg)

My other 2 friends:
(https://gametechmods.com/uploads/images/9160legobot electronics club 2.jpg)
THE WINDMILL (that's what they called it :gawe:)

No more school lego bots till next year :( but they shall be reborn!!!

Thoughts?
Title: Re: The Lego Robotics thread
Post by: Bubbleman on August 30, 2014, 06:24:02 AM
http://www.youtube.com/watch?v=zQy5H_tnI8c# (http://www.youtube.com/watch?v=zQy5H_tnI8c#)

Thought I'd throw this here, as that's what this thread is about.