View Full Version : 1519 - Video of 10 Laps in 60 Seconds...
Ken Streeter
17-02-2008, 16:45
A few days ago, the student lead of our "Speed Racer / Mach 6" effort posted a pic of our prototype speed racer (http://www.chiefdelphi.com/forums/showthread.php?t=64160) along with some robot statistics that generated a call for video. (Particularly of interest was the mention of 20fps and 6-second laps.) So, yesterday we invested some extra time in not only videotaping the robot, but also in taking an "in-car-cam" view, too.
The video is now available on the team's webpage at http://www.mechanicalmayhem.org or http://www.team1519.org
You can go directly to the page with the video on it at http://www.mechanicalmayhem.org/teamvideos.asp
Enjoy!
PS: Oh, and yes we know we're not yet done! Still need to add bumpers, a flag pole, and a lid to prevent getting squashed by trackballs or other robots.
PPS: We also realize that there's no way we'll be doing six second laps on a field full of robots!
Chuck Glick
17-02-2008, 17:04
Any chance this could be posted on youtube or google video?
I'm having trouble with it here. Everytime I try to watch the vid, it crashes my Firefox or Internet Explorer. Anyone else getting this issue?
Thanks.
-Chuck
EDIT:
Updated my quicktime player, fixed the problem. MAKE SURE YOU HAVE LATEST VERSION OF QUICKTIME TO RUN!!! I had the last rev and didn't work.
cziggy343
17-02-2008, 17:05
mine didnt even try to load when i clicked on it...
I'm having trouble with it here. Everytime I try to watch the vid, it crashes my Firefox or Internet Explorer. Anyone else getting this issue?
Worked for me (I'm running Ubuntu (http://www.ubuntu.com) ;) ). Are you able to save the mov file to your computer?
MrForbes
17-02-2008, 17:20
I didn't have any trouble downloading the video and playing it, but then I have my computer set up to mostly not have plugins in the browser.
Neat robot, looks like you'll have fun at the competitions! what are you using for control? we went with a modified R/C car controller and it seems to really help the driver control the robot, especially the transition from the turns to the straight-away
Ken Streeter
17-02-2008, 17:30
mine didnt even try to load when i clicked on it...
Due to popular demand, even though I'm not a big fan of platform-specific video formats, a Windows Media Player version has been added, too:
http://www.mechanicalmayhem.org/teamvideos.asp
MrForbes
17-02-2008, 17:38
even though I'm not a big fan of platform-specific video formats
says the guy who posted a QT movie! :)
(just kidding around...but seriously, what's wrong with .mpg?)
gam3fr3ak1
17-02-2008, 17:58
Maybe I'm just missing something, but don't you need a lap counter pole? The top of of the flag has to be 75" off the ground....
MrForbes
17-02-2008, 18:56
PS: Oh, and yes we know we're not yet done! Still need to add bumpers, a flag pole, and a lid to prevent getting squashed by trackballs or other robots.
They seem to be well aware of that...
RoXmySoX
17-02-2008, 19:01
nice vid team! :D
Uberbots
17-02-2008, 19:10
Thats insanely fast.
wilsonmw04
17-02-2008, 19:35
looks great on an empty track! I'm just trying to think of that's even remotely possible on a track with 5 other robots on it. great job!:)
BrendanB
17-02-2008, 20:57
The lap counter is still being worked on along with the flag holder.
lasereyes
17-02-2008, 21:23
Nice robot. Looks fast and very maneuverable.
What motor are you using to power your robot?
Nice robot. Looks fast and very maneuverable.
What motor are you using to power your robot?
We are using 2 CIMs. On each of them is a BaneBots 9:1 gearbox (http://banebots.com/pc/P80A-nnnn-0005-M4/P80A-33-0005-M4)
Each CIM/gearbox assembly drives a very short chain run to our 200mm (7.8in) diameter tires.
Dan Richardson
17-02-2008, 22:13
I feel like this robot is going to be extremely successful. 20 Laps is 40 pts lol, thats if you can make that many with bots on the field, but still 15 laps is 30pts. Keep in mind the winning scores from the Shake down scored 44 and 50 points as an alliance. 'Nuf Said.
Tom Bottiglieri
18-02-2008, 02:03
I feel like this robot is going to be extremely successful. 20 Laps is 40 pts lol, thats if you can make that many with bots on the field, but still 15 laps is 30pts. Keep in mind the winning scores from the Shake down scored 44 and 50 points as an alliance. 'Nuf Said.
1.5 laps in Hybrid mode = 24 more points
Ken Streeter
18-02-2008, 13:16
looks great on an empty track! I'm just trying to think of that's even remotely possible on a track with 5 other robots on it. great job!:)
Thanks for the kudos on the empty track performance.
We're also concerned about what we'll be able to attain on a crowded track -- we'll find out for sure at our week 1 regional!
Are you concerned about maneuverability? Your robot is extremely fast, but it seems like it's quite squirrelly/hard to control as it exits the turn around the lane divider.
Seems like it might make avoiding other robots somewhat difficult, though I'm sure practice will greatly help, with a robot that fast.
CDH Jeff
18-02-2008, 20:11
I like the car steering, but how fast can it go backwards if it runs into something? the car steering doesn't help the turning radius according to my beliefs.
DonRotolo
18-02-2008, 21:15
Ho. Lee. Cow.
That's pretty good, and once your driver really gets good control (not bad now, but give some practice...) you'll be going around the traffic jams.
Very nice.
Ken Streeter
19-02-2008, 15:04
I like the car steering, but how fast can it go backwards if it runs into something? The car steering doesn't help the turning radius according to my beliefs.
The car steering definitely makes for a bigger turning radius than a robot using tank drive (which could spin in place). However, the turning radius is surprisingly small -- at slow speed, the robot can drive a figure eight sideways across the field under the overpass.
Regarding how fast it can go backwards -- we have an embarrassingly entertaining "blooper video" of a backwards driving episode that we'll try to get online within a couple days after crating the robot!
We did 10.5 :P
Kidding...
Ken Streeter
20-02-2008, 19:53
Are you concerned about maneuverability? Your robot is extremely fast, but it seems like it's quite squirrelly/hard to control as it exits the turn around the lane divider.
Seems like it might make avoiding other robots somewhat difficult, though I'm sure practice will greatly help, with a robot that fast.
You're absolutely right -- when the video was filmed, the drivers were definitely having trouble exiting the 180-degree turn at the correct instant to have the robot headed straight down the track. In the time since the video was shot we have tweaked the PID loop for the steering a little to increase the precision of the steering, which has helped the drivers do better at exiting the turn at the proper instant. More practice is helping, as well.
We hope to be able to get some "obstacle avoidance" laps filmed, too!
holy cow... that's one FAST robot... barely looks big enough to have all the RC/Victors/Radio/Motors/Etc that it needs to run... I'd be worried about a big scary robot like my team's coming and rolling right over it... I'd be afraid our tracks would gobble that thing right up.
Kudos on the speed though, Wow, I didn't know the CIMs could do that.
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