www.robowars.org

RoboWars Australia Forum Index -> Builders Reports

Total Recoil - Chunkulator - NSW
Goto page Previous  1, 2, 3, 4, 5, 6  Next

Post new topic   Reply to topic
  Author    Thread
chunkulator



Joined: 27 Jul 2016
Posts: 219


 Reply with quote  

I successfully got it to tension the springs and then release them, but wasn't ready for the force that it would unleash upon itself. It completely bent the 3mm baseplate out of shape:


I spent today adding extra support members and sorting out mechanical issues and I now have it firing reliably again and again. Next up, some locomotion.

Post Sun Apr 23, 2017 8:50 pm 
 View user's profile Send private message
chunkulator



Joined: 27 Jul 2016
Posts: 219


 Reply with quote  

Tensioning and releasing is working smoothly now after adding more support members.

Drive transmission is pretty much ready: two large brushless low kV longboard motors controlled by TZ85As running SimonK through a 2:1 chain and sprocket drive to 1/2 inch axles. This weekend I have recruited Nick's help to turn some hub adapters which will allow me to mount 5 inch bunnings metal wheels on the axles:

https://www.bunnings.com.au/ambassador-125mm-black-rubber-tyre-with-silver-metal-centre_p3942966

I am expecting the drive system to be seriously overpowered and that this will be a very very zippy bot. I am expecting to do a first driving test this weekend.

Post Thu May 11, 2017 6:20 pm 
 View user's profile Send private message
Nick
Experienced Roboteer


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


 Reply with quote  

Its good to see such rapid progress! Looking forward to seeing a driving video.
_________________
Australian 2015 Featherweight champion
UK 2016 Gladiator champion

Post Thu May 11, 2017 7:22 pm 
 View user's profile Send private message
chunkulator



Joined: 27 Jul 2016
Posts: 219


 Reply with quote  

Nick was good enough to turn some wheel hub adapters for me over the weekend. Here is are the parts of the wheel I'll be using. The turned adapter gets a roll pin through it which locks it to the axle. It gets welded into one half of the pressed steel hub. So far I have one side together on the robot and it's looking good (pics soon).

Post Mon May 15, 2017 8:47 am 
 View user's profile Send private message
chunkulator



Joined: 27 Jul 2016
Posts: 219


 Reply with quote  

Got the other wheel on this evening. Here's what it looks like mounted on the bot:


I jerry-rigged some electronics to the frame for a quick driving test:


It works! It's very fast and a bit of a handful as expected, but it should be good enough I think.

Post Mon May 15, 2017 10:12 pm 
 View user's profile Send private message
marto
Experienced Roboteer


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


 Reply with quote  

Weight getting close?
_________________
Steven Martin
Twisted Constructions
http://www.botbitz.com

Post Mon May 15, 2017 10:25 pm 
 View user's profile Send private message Send e-mail MSN Messenger
chunkulator



Joined: 27 Jul 2016
Posts: 219


 Reply with quote  

Probably yes. It was about 7kg without the drive. I forgot to weigh it today but will check it tomorrow.

Post Mon May 15, 2017 10:49 pm 
 View user's profile Send private message
chunkulator



Joined: 27 Jul 2016
Posts: 219


 Reply with quote  

Weighs in at 12.5 kg with only the armour left to add. i guess I'm looking for armour that weighs 1kg or less. Probably 6mm HDPE is going to be the way to go. I have some 10mm HDPE, which is too heavy I think. But I also have some 6mm polycarbonate which might work out ok.

Post Tue May 16, 2017 9:33 pm 
 View user's profile Send private message
chunkulator



Joined: 27 Jul 2016
Posts: 219


 Reply with quote  

Paintjob!

Post Thu May 25, 2017 9:18 pm 
 View user's profile Send private message
chunkulator



Joined: 27 Jul 2016
Posts: 219


 Reply with quote  

I've been working hard on this bot this weekend to make sure it's in shape for Vivid. Yesterday I spent a bunch of time wiring up all the microswitches, getting all the electronics mounted and programming the Teensy 3.2 micro that is in charge of reloading:


Then today I added 5mm HDPE armour all round:


Once I got it all together and made a few tweaks to the microcontroller code I successfully have it auto-reloading. Here it is reloading on the bench with some shock cord in place of the springs for safety:

https://www.youtube.com/watch?v=kNymFjZuf6Q

Post Sun May 28, 2017 8:42 pm 
 View user's profile Send private message
Nick
Experienced Roboteer


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


 Reply with quote  

Excellent work! Can't wait to see it in action with the springs.
_________________
Australian 2015 Featherweight champion
UK 2016 Gladiator champion

Post Sun May 28, 2017 8:50 pm 
 View user's profile Send private message
chunkulator



Joined: 27 Jul 2016
Posts: 219


 Reply with quote  

I just finished the power distribution cabling, so it's now complete, electrically speaking. On a whim I tucked a couple of blue LED strips behind the HDPE panel on the flipping arm. I think the result is reasonably pretty.

Post Wed May 31, 2017 9:39 pm 
 View user's profile Send private message
Nick
Experienced Roboteer


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


 Reply with quote  

Very Vivid! Smile
_________________
Australian 2015 Featherweight champion
UK 2016 Gladiator champion

Post Wed May 31, 2017 9:43 pm 
 View user's profile Send private message
Valen
Experienced Roboteer


Joined: 07 Jul 2004
Posts: 4435
Location: Sydney


 Reply with quote  

shiny!
_________________
Mechanical engineers build weapons, civil engineers build targets

Post Thu Jun 01, 2017 6:10 pm 
 View user's profile Send private message Visit poster's website AIM Address Yahoo Messenger MSN Messenger ICQ Number
Cpnwolfe



Joined: 29 May 2012
Posts: 454
Location: Rockhampton/qld


 Reply with quote  

nice work mate!
_________________
Creative Instigation - Build Something Awesome!

https://www.youtube.com/channel/UCTuWeJ4OrAcsmjKir9L4JNg

https://www.facebook.com/CreativeInstigation/

Post Fri Jun 02, 2017 8:32 am 
 View user's profile Send private message
  Display posts from previous:      

Forum Jump:
Jump to:  

Post new topic   Reply to topic
Page 4 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.