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Sumo-bot Four - January 25, 2003
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Competitors Present: Gabriel, Greg K., Greg D., Heather, John, Jona, Josh, Steve, Tom
Spectators Present: Aaron, Larry, Joe, Rob, Sierre
For our fourth attempt at sumo-bot wrestling we decided to tweak the rules a bit. The biggest change was to impose a 2 pound weight limit for the robots. The idea behind this rule was to promote builder creativity in the robot designs. As you will sonn find out, that goal was achieved! We had a record 16 robots entered into this event, each of which being different from the last in its general strategy.
We also changed how we were scoring the matches and bouts. Steve has written software to help in this endeavor and our competition served as the third "field test" for it. It seemed to do the job well, actually allowing us to come to a solid conclusion which robot was the dominant sumo-bot after 5 rounds of matches. This is significantly fewer rounds played then there would be if we did a full round robin.
Yet again, a very fun and exciting event because of the large number of robots present.
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| Length = 6.5" |
| Width = 11" |
| Weight = 1.98 lbs |
| Rank = 5 |
| - Combine by Steve:
Utilized 8 wheels (4 on the left and 4 on the right) and 4 motors with what amounts to a wedge shaped chasis.
| Round |
Opponent (Rank) |
Bouts |
Rank |
| 1 |
Dozer (1) |
1:W, 2:W, 3:W |
1 |
| 2 |
Plow King (1) |
1:W, 2:W, 3:W |
1 |
| 3 |
Mini-Skirt (1) |
1:W, 2:L, 3:L |
1 |
| 4 |
Fingers (2) |
1:T, 2:T, 3:W |
4 |
| 5 |
Knife (1) |
1:W, 2:L, 3:L |
2 |
| Final |
|
Won: 9, Lost: 4, Tied: 2 |
5 |
|
 |
| Length = 10.8" |
| Width = 8" |
| Weight = 1.95 lbs |
| Rank = 6 |
| - Dozer by Josh:
Used 4 of the large anti-skid wheels. Was able to push 10 lbs. in pre-event testing. Represents a new platform for Josh to evolve in future sumo events. Had "floating" wedges that gave a "crumple-zone" effect to the chasis.
| Round |
Opponent (Rank) |
Bouts |
Rank |
| 1 |
Combine (1) |
1:L, 2:L, 3:L |
1 |
| 2 |
Territorial Imperative (10) |
1:T, 2:T, 3:W |
10 |
| 3 |
Razor Blade (15) |
1:W, 2:W, 3:L |
6 |
| 4 |
Plow King (10) |
1:L, 2:L, 3:L |
4 |
| 5 |
Mini-Skirt (2) |
1:T, 2: -, 3: - |
6 |
| Final |
|
Won: 3, Lost: 7, Tied: 3 |
6 |
|
 |
| Length = 11" |
| Width = 8.5" |
| Weight = 1.99 lbs |
| Rank = 3 |
| - Fingers by Heather:
Used a total of 6 wheels (2 on the left, 2 on the right and 2 down the center). Had a wedge on the front end rear faces that was constructed from axels (hence the name).
| Round |
Opponent (Rank) |
Bouts |
Rank |
| 1 |
Runaway (1) |
1:W, 2:W, 3:W |
1 |
| 2 |
Knife (1) |
1:L, 2:W, 3:T |
1 |
| 3 |
Panzer (3) |
1:W, 2:L, 3:W |
3 |
| 4 |
Combine (4) |
1:T, 2:T, 3:L |
2 |
| 5 |
Rector (6) |
1:W, 2:T, 3:W |
5 |
| Final |
|
Won: 8, Lost: 3, Tied: 4 |
3 |
|
 |
| Length = 6.5" |
| Width = 9" |
| Weight = 1.80 lbs |
| Rank = 1 |
 |
| - Knife by Steve:
Used a homebrew ultra-sonic sensor to locate and track its opponents. Basic wedge shaped front end using the long flag elements found in some of the racer sets. The wedge was very thin in profile and was able to get below many if not all of the other robots.
| Round |
Opponent (Rank) |
Bouts |
Rank |
| 1 |
Razer-Blade (1) |
1:W, 2:W, 3:L |
1 |
| 2 |
Fingers (1) |
1:W, 2:L,
3:T |
1 |
| 3 |
The Plow (6) |
1:L, 2:W, 3:W |
3 |
| 4 |
Mini-Skirt (1) |
1:W, 2:W, 3:W |
2 |
| 5 |
Combine (2) |
1:L, 2:W, 3:W |
1 |
| Final |
|
Won: 10, Lost: 4, Tied: 1 |
1 |
|
 |
| Length = 7" |
| Width = 8" |
| Weight = 1.96 lbs |
| Rank = 14 |
| - Mary Ann by Tom:
Originally built as a sparring partner for Territorial Imperative, Tom decided to bring it to the event. A Professor minifig was driving this airplane shaped robot while manning a red laser. The center of gravity was quite high as witnessed in some spectacular tumbles out of the ring.
| Round |
Opponent (Rank) |
Bouts |
Rank |
| 1 |
Panzer (1) |
1:T, 2:T, 3:T |
1 |
| 2 |
The Plow (10) |
1:L, 2:L, 3:W |
8 |
| 3 |
Rampy (6) |
1:L, 2:L, 3:W |
12 |
| 4 |
Reactor (10) |
1:T, 2:T, 3:L |
14 |
| 5 |
Runaway (14) |
1:T, 2:W, 3:W |
15 |
| Final |
|
Won: 4, Lost: 5, Tied: 6 |
14 |
|
 |
| Length = 11" |
| Width = 8" |
| Weight = 2.05 lbs |
| Rank = 3 |
| - Mini-Skirt by Jona:
Made use of a paper-board "skirt" on 3 sides to simulate the white edge of the ring to its opponents. Also had a front bumper of counter-rotating wheels to aid in pushing.
| Round |
Opponent (Rank) |
Bouts |
Rank |
| 1 |
Narsil (1) |
1:L, 2:W, 3:W |
1 |
| 2 |
PocketBot (1) |
1:W, 2:W, 3:W |
1 |
| 3 |
Combine (1) |
1:L, 2:W, 3:W |
1 |
| 4 |
Knife (2) |
1:L, 2:L, 3:L |
1 |
| 5 |
Dozer (6) |
1:T, 2:-, 3:- |
2 |
| Final |
|
Won: 7, Lost: 5, Tied: 1 |
3 |
|
 |
| Length = 9" |
| Width = 10" |
| Weight = 1.95 lbs |
| Rank = 2 |
| - Narsil by Andrew:
Very low and flat, using 4 motors for drive train and 6 wheels.
| Round |
Opponent (Rank) |
Bouts |
Rank |
| 1 |
Mini-Skirt (1) |
1:W, 2:L, 3:L |
1 |
| 2 |
Razor Blade (10) |
1:W, 2:W, 3:L |
10 |
| 3 |
Plow King (6) |
1:W, 2:T, 3:T |
6 |
| 4 |
Rampy (4) |
1:W, 2:W, 3:W |
4 |
| 5 |
The Plow (6) |
1:L, 2:W, 3:W |
2 |
| Final |
|
Won: 9, Lost: 4, Tied: 2 |
2 |
|
 |
| Length = 10" |
| Width = 7" |
| Weight = 1.96 lbs |
| Rank = 6 |
| - Panzer by Greg D.:
Having 6 motors made it quick and strong, but it was unable to turn.
| Round |
Opponent (Rank) |
Bouts |
Rank |
| 1 |
Mary Ann (1) |
1:T, 2:T, 3:T |
1 |
| 2 |
Rampy (1) |
1:T, 2:W, 3:T |
8 |
| 3 |
Fingers (3) |
1:L, 2:W, 3:L |
3 |
| 4 |
The Plow (10) |
1:L, 2:L, 3:L |
8 |
| 5 |
Razor Blade (15) |
1:W, 2:W, 3:W |
12 |
| Final |
|
Won: 5, Lost: 5, Tied: 5 |
6 |
|
 |
| Length = 6" |
| Width = 12" |
| Weight = 1.62 lbs |
| Rank = 11 |
| - Plow King by John:
Used the largest 4 x 4 wheels with 2 motors. A low and wide wedge that actually could rotate around its drive axel while pushing opponent.
| Round |
Opponent (Rank) |
Bouts |
Rank |
| 1 |
Territorial Imperative (1) |
1:W, 2:W, 3:W |
1 |
| 2 |
Combine (1) |
1:L, 2:L, 3:L |
1 |
| 3 |
Narsil (6) |
1:L, 2:T, 3:T |
6 |
| 4 |
Dozer (10) |
1:W, 2:W, 3:W |
4 |
| 5 |
PocketBot (12) |
1:L, 2:L, 3:W |
6 |
| Final |
|
Won: 7, Lost: 6, Tied: 2 |
11 |
|
|
| Length = 3" |
| Width = 7.5" |
| Weight = 1.19 lbs |
| Rank = 6 |
| - PocketBot by Steve:
Very small and quick. Barely more then a shell around the RCX and motors.
| Round |
Opponent (Rank) |
Bouts |
Rank |
| 1 |
The Plow (1) |
1:W, 2:L, 3:W |
1 |
| 2 |
Mini-Skirt (1) |
1:L, 2:L, 3:L |
1 |
| 3 |
Reactor (12) |
1:T, 2:T, 3:T |
6 |
| 4 |
Territorial Imperative (10) |
1:L, 2:T, 3:L |
8 |
| 5 |
Plow King (6) |
1:W, 2:W, 3:L |
12 |
| Final |
|
Won: 4, Lost: 7, Tied: 3 |
6 |
|
|
| Length = 10.5" |
| Width = 11" |
| Weight = 2.00 lbs |
| Rank = 6 |
| - Rampy by Josh:
Built in the last minute as a sparring partner for Dozer, Rampy sports a double wedge design with inverted plates for a surface. Uses the same program as Dozer.
| Round |
Opponent (Rank) |
Bouts |
Rank |
| 1 |
Reactor (1) |
1:W, 2:T, 3:- |
1 |
| 2 |
Panzer (8) |
1:T, 2:L, 3:T |
1 |
| 3 |
Mary Ann (12) |
1:W, 2:W, 3:L |
6 |
| 4 |
Narsil (4) |
1:L, 2:L, 3:L |
4 |
| 5 |
Territorial Imperative (6) |
1:T, 2:T, 3:- |
2 |
| Final |
|
Won: 3, Lost: 5, Tied: 4 |
6 |
|
 |
| Length = 8.5" |
| Width = 7" |
| Weight = 1.99 lbs |
| Rank = 16 |
| - Razor Blade by Gabriel:
Sporting 4 motors in the drive train and a wedge shaped front end, an IR proximity sensor, 2 light sensors and 2 touch sensors (attached to side impact bumpers).
| Round |
Opponent (Rank) |
Bouts |
Rank |
| 1 |
Knife (1) |
1:L, 2:L, 3:W |
1 |
| 2 |
Narsil (10) |
1:L, 2:L, 3:W |
10 |
| 3 |
Dozer (15) |
1:L, 2:L, 3:W |
6 |
| 4 |
Runaway (14) |
1:W, 2:L, 3:T |
16 |
| 5 |
Panzer (12) |
1:L, 2:L, 3:L |
15 |
| Final |
|
Won: 4, Lost: 10, Tied: 1 |
16 |
|
 |
| Length = 6" |
| Width = 11" |
| Weight = 1.69 lbs |
| Rank = 11 |
| - Reactor by Steve:
A pure mechanical solution (no computing power what-so-ever!) to sumo wrestling. Making use of a bumper design that integrates with 2 polarity switches to toggle the power supply on and off.
| Round |
Opponent (Rank) |
Bouts |
Rank |
| 1 |
Rampy (1) |
1:W, 2:T, 3:- |
1 |
| 2 |
Runaway (10) |
1:W, 2:T, 3:L |
10 |
| 3 |
PocketBot (6) |
1:T, 2:T, 3:T |
12 |
| 4 |
Mary Ann (14) |
1:T, 2:T, 3:W |
10 |
| 5 |
Fingers (5) |
1:L, 2:T, 3:L |
6 |
| Final |
|
Won: 3, Lost: 3, Tied: 7 |
11 |
|
 |
| Length = 8" |
| Width = 10" |
| Weight = 1.71 lbs |
| Rank = 15 |
| - Runaway by Greg K.:
Designed to avoid conflicts by detecting collisions with its uni-bumber. The bumper wraps around the entire robot and is connected to 4 touch sensors that are connected to the RCX via a multiplxor. Uses a light sensor for edge detection and has 2 light elements on the front end as an offensive weapon.
| Round |
Opponent (Rank) |
Bouts |
Rank |
| 1 |
Fingers (1) |
1:L, 2:L, 3:- |
1 |
| 2 |
Reactor (10) |
1:L, 2:T, 3:W |
10 |
| 3 |
Territorial Imperative (15) |
1:L, 2:L, 3:W |
12 |
| 4 |
Razor Blade (16) |
1:L, 2:W, 3:T |
14 |
| 5 |
Mary Ann (15) |
1:T, 2:L, 3:L |
14 |
| Final |
|
Won: 3, Lost: 8, Tied: 3 |
15 |
|
 |
| Length = 11" |
| Width = 10" |
| Weight = 2.00 lbs |
| Rank = 6 |
| - Territiorial Imperative by Tom:
Unique rotating bumper attached to a custom touch sensor. 2 motor drive train coupled to 4 tracks. Front and rear collision bumpers and edge detection via light sensors.
| Round |
Opponent (Rank) |
Bouts |
Rank |
| 1 |
Plow King (1) |
1:L, 2:L, 3:L |
1 |
| 2 |
Dozer (10) |
1:T, 2:T, 3:L |
10 |
| 3 |
Runaway (12) |
1:W, 2:W, 3:L |
15 |
| 4 |
PocketBot (8) |
1:W, 2:T, 3:W |
10 |
| 5 |
Rampy (6) |
1:T, 2:T, 3:- |
6 |
| Final |
|
Won: 4, Lost: 2, Tied: 5 |
6 |
|
 |
| Length = 8.5" |
| Width = 8" |
| Weight = 1.99 lbs |
| Rank = 11 |
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| - The Plow by John:
Used the largest 4 x 4 wheels with 4 motors. A narrow and tall chassis that focused its energy into a pivoting front end scoop.
| Round |
Opponent (Rank) |
Bouts |
Rank |
| 1 |
PocketBot (1) |
1:L, 2:W, 3:L |
1 |
| 2 |
Mary Ann (8) |
1:W, 2:W, 3:L |
10 |
| 3 |
Knife (3) |
1:W, 2:L, 3:L |
6 |
| 4 |
Panzer (8) |
1:W, 2:W, 3:W |
10 |
| 5 |
Narsil (2) |
1:W, 2:L, 3:L |
6 |
| Final |
|
Won: 8, Lost: 7, Tied: 0 |
11 |
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We played 5 rounds of matches before a dominant robot emerged. We used a piece of software developed by Steve to manage the event. After we entered all of the robot names into the software, it paired them all off and we began round 1. Each match had a cumulative time limit of 3 minutes in which upto 3 bouts could be played. The software takes care of watching the clock, keeping track of how many bouts have been played, who won and who lost each bout as well as video capture of the bout using the LEGO web camera. All in this software made the event go very smooth without hitches. Thanks to Steve for such a nice tool!
Two trophies were given out at the end of the event. One went to Knife who was the overall winner with 85% matches won. The other went to The Plow who was voted the "People's Choice" with 5 votes. You can view the trophies here.
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