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Topics - Travis7s

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Rules Discussion / Multibots
« on: August 22, 2015, 11:24:25 am »
I'm working on a multibot and I have a few questions:

In the case of multi-bots, the countdown will begin when greater than 75% of the mass of
the multi-bot is unable to move. For multi-bots with an even number of robots (2, 4, etc…)
and equal weights for each portion the team will identify which are considered to be the
heaviest.


If 75% must be disabled, why do teams have to declare a 'heaviest' robot when they are equal weight?


In the event that both robots enter the death zone simultaneously they will be returned to
the combat area and the match will resume. A robot that places its opponent in the death
zone must be able to do so without also becoming stuck itself. If it is not able to separate
from the other robot this will be treated as simultaneous entry


What happens when one of the multibots does this to the opponent and the other multibot is still functional in the arena?

2
Rules Discussion / Weight Verification
« on: July 15, 2015, 08:02:50 pm »
Weight Verification:
A robot may be re-weighed at any time during a tournament at the request of an event
official or judge. The time required to verify that the robot is still within the legal weight limit
will not be counted against the robots guaranteed time between matches. In the event that
the robot in question is less than 5% over the weight limit they will need to be made
underweight prior to their next match. If the robot is in excess of 5% above the weight limit
they will forfeit their prior match and will need to be made underweight prior to their next
match. If repeated infractions occur in during the same event the robot will be disqualified
from the event. If a robot has been modified since its last match the team will be responsible
for ensuring that any repairs or modifications done stay within the weight limit. In the event
that an event official calls for a re-weigh immediately following a match (prior to either robot
returning to the pit area or having any work done to them) both robots will be weighed to
confirm that they are within the weight limit. If one of the two robots is overweight it will
immediately forfeit the match. If both robots are found to be overweight the original match
result will stand and both robots will be required to be brought below the weight limit prior to
their next match.


Is it just me or are these rules full of loopholes? Why does it matter if my robot is overweight in the pits when its not fighting? How will my robot gain weight during a fight that would require a weighin immediately after?

Doesn't it make more sense to just do a weighin immediately before a match starts and then not care if the robot is overweight at any other time?

3
SCRC (Saskatoon Combat Robotics Club) / Event Organization
« on: July 15, 2015, 07:53:12 pm »
Ethan has done a good job, but now he is leaving us, so we should figure out what we are doing...

In the past the EO has basically been responsible for everything but, since nobody really seems to be jumping at the chance to replace Ethan, maybe we should try something different?

We could be more like a club and try to delegate jobs to different people, I suppose we could take turns each event if needed.

Event planner: this person books the venue, is the contact for the people at the venue, and makes sure we have what we need prior to the event. Once we are setup I figure this persons job is finished unless something comes up that we need to talk to venue staff.

Scheduler: this person creates the fight trees and is responsible for scheduling the matches throughout the event.

Safety Guy: this person does weigh-ins and  safety checks by the book for all robots and enforces them.

Refs and Judges: I think we have no choice to do this as we normally do, use whoever is available and qualified. I think it would be a good idea to use one of our meeting nights to go over all the guidelines together, watch the SPARC video examples, discuss, and just get on the same page.

What else am I missing? Thoughts?

4
SCRC (Saskatoon Combat Robotics Club) / Innovation Place Demo
« on: June 27, 2015, 06:56:39 pm »
Hi all,

We have the potential opportunity to do a sponsored demo at Innovation Place. It would mostly likely be in early August on a Friday afternoon for 2-4 hours. It would probably be outside in one of the parks or parking lots. This could be a good chance to raise some funds and maybe get some new builders interested as the audience will mostly be 'techy' adults.

My thoughts are we could provide a bunch of bots and let the audience fight in rumbles, have destruction demos with our bots, and have grudge fights if people want.

What we need is a rough headcount of people who would be able to help out with this, then we could finalize the details with the sponsor.

5
SCRC (Saskatoon Combat Robotics Club) / Rebranding
« on: June 22, 2015, 12:13:01 pm »
We are looking into getting a new logo, before that goes too far there was some previous talk about changing out name/image.

Personally I think we should go away from the 'club' aspect. It makes it seem more exclusive and there is really no perks to being a member other than you sort of get to have a vote for things.

Ideas? Thoughts?

Saskatoon Combat Robotics (SCR) (IMO these days combat sounds more like mechwarrior style to me)

Saskatoon Fighting Robotics (SFR)

Saskatoon Battle Robotics (SBR)

6
Progress Reports / Super Shooter McGavin - Travco Robotics
« on: June 07, 2015, 02:47:14 am »
Super Shooter McGavin is basically a beetle version of my reasonably successful ant, Shooter McGavin (v4.0). Basically a 2 wheeled undercutter that has a 'house' shaped 1 piece UHMW frame.


Here is the original SM (missing blade) with the block of 2" thick UHMW



Rough cut the block on the bandsaw and then cleaned up the edges on the mill. One difference I tried with SSM was belt driving the wheels. I made some pulleys out of delrin and made some grooves in Fingertech foam wheels to use round belts.



The frame is mostly done being hollowed out.





The blades are some type of lawn care edging blade. The stock one is on top and is 9" long and has a strange square/round bore. This is good for me as I am using a square 'nub' machined into my 4130 shaft, although I guess I forgot to take a photo of that. I also trimmed the length of the blade so it wouldn't hit my wheels.



Spark motors for drive, aluminum pulleys for the weapon and HobbyKing Mule motor, possibly the cheapest motor money can buy. :P

[/img]

Fast forward to the night before the competition and its 'done'. It was late and I said meh to adding any armour.

SSM did very poorly at its first event, going 0-2. There was some major operational issues that I knew about going that I didn't have time to fix. I was too cheap to buy new sparks in a faster so ratio so the robot was very slow. There was also quite a bit of slipping in the weapon belt and this led to pretty slow spin up time. I lost to Utopia, a powerful drumbot who easily dug into the unprotected UHMW and juggled me more or less. I put anti-getting-stuck screws on the back but didn't think to put them on the front, and promptly got stuck a few times.

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

Next fight was against Shark Beetle, a fast brick/rammer. This fight was going alright up until my weapon belt broke, ended up losing judge decision.

https://www.youtube.com/watch?v=Rs4Q7VBSdjE

Rumble:

https://www.youtube.com/watch?v=mHw9iMdeu7M







7
SCRC (Saskatoon Combat Robotics Club) / Trophies
« on: April 16, 2015, 11:35:44 pm »
One of the things we aren't very good at is having trophies for events, so I'm trying to build some!

So far I have the toppers, which are cheap toy bugs I got off Amazon and am painting accordingly:



I have 72 of the ants and 24 beetles so thats enough for lots of events

I also got these cool laser cut metal ones for Spectrum as I think thats a higher tier event. It took my like 3 hours to assemble them.



The stands I need to work on but they can be junk metal/bolts/sawblades and will vary from event to event to be unique. Does anyone know where you can buy super cheap saw blades?

I'm also hoping I can find somebody local with laser to engrave little plaques to mount on them..... hint hint...

8
SCRC (Saskatoon Combat Robotics Club) / Tools
« on: April 09, 2015, 08:02:25 am »
I'm always on the lookout for tools, so just thought I would post ones I find like I did on Delphi.

http://www.kijiji.ca/v-view-details.html?adId=1063028048&utm_source=alerts&utm_medium=email&utm_campaign=email_alerts

Bit of a drive but would make an decent small bot lathe.

9
SCRC (Saskatoon Combat Robotics Club) / Autonomous Weight Bonus?
« on: March 28, 2015, 12:23:22 am »
So we used to have a 50% weight bonus for this but nobody ever used it. Of course now that the bonus is gone I want to build an auto ant!

What are the odds it can be reinstated?

Here is a shot of the electronics out of a robo-vacuum that I want to use.



It has 3 IR sensors for pushout detection, although I'm not sure how well they would work on the all black floor. It has a bump sensor (opto switch) for detecting walls. The stock drive motors are 370 sized so it should easily be able to run Sparks. It also drives 1x 370 motor for the vacuum and 2x 320 motors for the brushes so i could use those for a brushed spinner weapon.

Use a regular RC on/off switch to turn it on, and either arduino or a 555 timer in monostable driving a FET to do the timeout function.

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