www.robowars.org

RoboWars Australia Forum Index -> Builders Reports

Budget Bot v4 - Sub $100 Robot.
Goto page Previous  1, 2, 3, 4, 5, 6  Next

Post new topic   Reply to topic
  Author    Thread
Nick
Experienced Roboteer


Joined: 16 Jun 2004
Posts: 11802
Location: Sydney, NSW


 Reply with quote  

That would certainly be tempting! Having started out on drill motors, I never want to go back to them. The long-term savings of a more relaible part are hard to determine but real.

Post Mon Jun 06, 2011 4:27 pm 
 View user's profile Send private message
Glen
Experienced Roboteer


Joined: 16 Jun 2004
Posts: 9481
Location: Where you least expect


 Reply with quote  

If you don't use a part right it'll never work, regardless of expense or build. Think about that, and demons 4 year old same motor/gearbox drills Wink
_________________
www.demon50s.com - Minimoto parts
http://www.youtube.com/user/HyzerGlen - Videoooozzz

Post Mon Jun 06, 2011 4:31 pm 
 View user's profile Send private message Send e-mail Visit poster's website MSN Messenger
bytraper



Joined: 31 Oct 2005
Posts: 195


 Reply with quote  

Ah yes, but Demon is a rare beast and has small wheels which wouldn't even stress an all plastic gearbox. It doesn't rely on pushing power at all. It relies on a hulkin' great disk and mostly one wheel on the ground at any one time.

Its also my favourite bot in Australia. Also isn't demon using a couple of 18v dewalt drill motors?

Just thinking about it, i could probably grab some different ratios too and have grooves for circlips cut into the shaft 1mm wide every 3mm

Post Mon Jun 06, 2011 4:47 pm 
 View user's profile Send private message MSN Messenger
Jaemus
Experienced Roboteer


Joined: 01 Apr 2009
Posts: 2674
Location: NSW


 Reply with quote  

You're thinking of Cobra, has Dewalts, Demon is definately drills
_________________
<Patrician|Away> what does your robot do, sam
<bovril> it collects data about the surrounding environment, then discards it and drives into walls

Post Mon Jun 06, 2011 9:01 pm 
 View user's profile Send private message Send e-mail MSN Messenger
Nick
Experienced Roboteer


Joined: 16 Jun 2004
Posts: 11802
Location: Sydney, NSW


 Reply with quote  

Aren't the drill gearboxes in Demon modified? They have lasted brilliantly, but doing the various mods we have developed takes skills and tools that new builders don't have. Perhaps we should list out all the options for Steve to reference?

Post Tue Jun 07, 2011 7:40 am 
 View user's profile Send private message
marto
Experienced Roboteer


Joined: 08 Jul 2004
Posts: 5459
Location: Brisbane, QLD


 Reply with quote  

Yes please list options on wiki then link here.

Anyway back on robot progress. Have modded tpy1-25s and will try them out sometime. I have some gearboxes which aren't quite standard drills but will do for some initial testing. Hoping that it will work fine with no magic smoke.

Steve
_________________
Steven Martin
Twisted Constructions
http://www.botbitz.com

Post Thu Jun 09, 2011 3:10 pm 
 View user's profile Send private message Send e-mail MSN Messenger
marto
Experienced Roboteer


Joined: 08 Jul 2004
Posts: 5459
Location: Brisbane, QLD


 Reply with quote  

The battery. http://www.hobbyking.com/hobbyking/store/uh_viewItem.asp?idProduct=15454

$9.88

I just bought the equivalent one in a non B-grade cell so will see how it goes. Only things I need now are some drills.

Oh and red wheels are $4.87 IMO a lot for a crappy plastic wheel but as mounting them is like 30cents worth of washers can't really get anything cheaper.
_________________
Steven Martin
Twisted Constructions
http://www.botbitz.com

Post Wed Jun 15, 2011 12:42 am 
 View user's profile Send private message Send e-mail MSN Messenger
kkeerroo
Experienced Roboteer


Joined: 17 Jun 2004
Posts: 1459
Location: Brisbane


 Reply with quote  

have you looked at hobbyking for wheels?
http://www.hobbyking.com/hobbyking/store/uh_viewItem.asp?idProduct=15115
_________________
Get Some!!!

Secretary of the Queensland Robotics Sports Club inc.

Post Wed Jun 15, 2011 8:51 am 
 View user's profile Send private message Send e-mail Yahoo Messenger MSN Messenger
marto
Experienced Roboteer


Joined: 08 Jul 2004
Posts: 5459
Location: Brisbane, QLD


 Reply with quote  

Hmmm coming back to this again. I am wondering if < $100 is possible yet.

I am thinking wood + a PCB with relays and maybe even make it so it can be triggered by a wired controller to start with.

Steve
_________________
Steven Martin
Twisted Constructions
http://www.botbitz.com

Post Sun Oct 26, 2014 9:37 am 
 View user's profile Send private message Send e-mail MSN Messenger
marto
Experienced Roboteer


Joined: 08 Jul 2004
Posts: 5459
Location: Brisbane, QLD


 Reply with quote  

Parts List

2 x K-Mart Drills $50
1 x PCB $5
4 x Relays $10
5m of 6 Core wire to trigger relays - $5
4 x buttons $4

2 x red wheels $10
Washers + screws - $6
Ply for frame $10

Total $100

Doable.....
_________________
Steven Martin
Twisted Constructions
http://www.botbitz.com

Post Thu Nov 06, 2014 8:31 pm 
 View user's profile Send private message Send e-mail MSN Messenger
Jaemus
Experienced Roboteer


Joined: 01 Apr 2009
Posts: 2674
Location: NSW


 Reply with quote  

did that include servos, grub screws for modding the drills, and hose clamps for mounting them? or are we talking cable ties here?
_________________
<Patrician|Away> what does your robot do, sam
<bovril> it collects data about the surrounding environment, then discards it and drives into walls

Post Thu Nov 06, 2014 8:51 pm 
 View user's profile Send private message Send e-mail MSN Messenger
marto
Experienced Roboteer


Joined: 08 Jul 2004
Posts: 5459
Location: Brisbane, QLD


 Reply with quote  

No servos needed, didnt include grub screws though bulk order from UK is way to go there, plywood mounts with screws.

Steve
_________________
Steven Martin
Twisted Constructions
http://www.botbitz.com

Post Thu Nov 06, 2014 9:17 pm 
 View user's profile Send private message Send e-mail MSN Messenger
Jolijar



Joined: 22 Feb 2013
Posts: 96
Location: Dekalb, IL


 Reply with quote  

I'm wondering if you could use a attiny or equivalent to control the relays instead of using a cable system. would not add much cost. also the new wifi chip ESP8266 might work for a receiver using a smart phone as the controller. someone who knows what they are doing might be able to make a system that works for $15-20.

Post Fri Nov 07, 2014 3:06 am 
 View user's profile Send private message Visit poster's website
Knightrous
Site Admin


Joined: 15 Jun 2004
Posts: 8510
Location: NSW


 Reply with quote  

If your looking at a tethered version, you could use DPDT toggle switches instead of relays.
_________________
Team Knightrous

Post Fri Nov 07, 2014 7:49 am 
 View user's profile Send private message
marto
Experienced Roboteer


Joined: 08 Jul 2004
Posts: 5459
Location: Brisbane, QLD


 Reply with quote  

Idea with relays is that you could thhe power them with servos so you could upgrade to RC control.

Steve
_________________
Steven Martin
Twisted Constructions
http://www.botbitz.com

Post Fri Nov 07, 2014 8:38 am 
 View user's profile Send private message Send e-mail MSN Messenger
  Display posts from previous:      

Forum Jump:
Jump to:  

Post new topic   Reply to topic
Page 3 of 6

Goto page Previous  1, 2, 3, 4, 5, 6  Next

Forum Rules:
You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum

 

Last Thread | Next Thread  >
Powered by phpBB: © 2001 phpBB Group
millenniumFalcon Template By Vereor.