We got 14th! Which, let's face it, is not as good as last year, when we got 11th. Nor is it as good as we were hoping we'd do with our fancy hydrophones. But hey, it was quite the ride. Read more in this excerpt from the Dallas Morning News story about us:
http://smu.edu/newsinfo/excerpts/robotics-club-dmn-5aug2008.asp.
We were estatic, however, that our friends at the University of Texas at Dallas ended up getting 2nd place. (And they only got 2nd place because they did exactly what the 1st place team did just a little slower.) Go UTD!
It's sad to know that we won't get another shot at the competition, since almost all of our team members are graduating. Many of the other teams encouraged us by saying, "Oh don't worry, you'll get it to work next year for sure." When we informed them that we wouldn't be returning, though, they had a new idea: "Well in that case...can we have your robot?"
She may have had a few bugs, but one thing's for sure. Seahorse III was and is the sexiest 'bot around.
If you've been following this blog, please leave a comment to tell the guys of the Robotics Club--once last time--just how they rock!
Thursday, August 7, 2008
Sunday, August 3, 2008
Saturday
Static judging on Friday left us in 14th place, so we got 14th choice of competition times on Saturday. We competed at 10:30 am, which put a time crunch on our preparations. Nevertheless, the guys prepared Friday night, got an early practice time (and Chris Pilcher got here at 6:15 am in order to sign up for it! Go Chris!), and then did more tests in the dolphin pool. They worked hard up until the very moment of the competition time, working to get the hydrophone task functioning.
Seahorse III drove through the gate easily and then headed straight toward the pinger. It was obvious that the robot was locked on to the pinger correctly, and we all held our breath as it drove closer and closer. About halfway there, though, it suddenly slowed to a stop. Seahorse III rotated back and forth, still seemingly locked on to the pinger, but not moving forward. Unfortunately, then, our time ran out, and it was apparent that we would not be able to move forward to the Finals.
Now the pressure is off, and our team is enjoying watching the rest of the competition play out. We've made some friends at other universities, and we'll be cheering them on.
Seahorse III drove through the gate easily and then headed straight toward the pinger. It was obvious that the robot was locked on to the pinger correctly, and we all held our breath as it drove closer and closer. About halfway there, though, it suddenly slowed to a stop. Seahorse III rotated back and forth, still seemingly locked on to the pinger, but not moving forward. Unfortunately, then, our time ran out, and it was apparent that we would not be able to move forward to the Finals.
Now the pressure is off, and our team is enjoying watching the rest of the competition play out. We've made some friends at other universities, and we'll be cheering them on.
Friday, August 1, 2008
Isopropyl Alcohol Fixes Everything
This competition is starting to feel a bit more intense. Since we were the third team to pre-qualify by driving through the gate yesterday, we got third choice of competition times today. We chose 12 o'clock noon to give ourselves to time to prepare before and after.
After some hard decision-making, we decided to eschew the vision events in favor of concentrating on the hydrophones and detecting the pinger. We also decided to toss the floating antenna that attached to our sub with a long, waterproof cable. Instead, we made a last-minute trip to Home Depot for a long, indoor antenna that would attach directly to the sub. It worked like a charm.
Thirty minutes before our competition time, we had a moment of panic when the sub's right motor wouldn't turn on (unless you poked it). Also, the sub was leaking just a tad. The guys quickly took the sub apart and discovered that the motor drivers needed to be switched. The leaking was taken care of with a few squirts of isopropyl alcohol and a liberal application of a toothbrush. (Over the course of this competition, I've come to the realization that isopropyl alcohol (IPA) will fix just about anything. Hydrophones not working? Clean the boards with IPA. Motors not working? Clean the boards with IPA. Software error? Re-code and then clean everything with IPA for good measure.)
We rushed up to the competition dock at the last possible minute, where Dave, the man in charge, grinned and tapped his watch. "12:14." (We had until 12:15.) However, we were surprised to find out that the rules of the pinger were different than we though. One of two pingers (with two different frequencies) is turned on, and the robot is supposed to find the pinger, no matter which frequency is going. We thought that at the beginning of the run, Dave would reveal the frequency of the pinger. Oops. Unsure that we could complete the hydrophone task under these new conditions, we elected to do only the simplest task of all: driving through the gate. We managed it easily, twice. Of course, only the last run counts towards points.
Now the guys are focusing on making the hydrophones work under the new conditions, a task that they believe is entirely possible.
Next up on the schedule is a practice run at 2:30 and static judging shortly thereafter. In static judging, the judges will come by the booth and examine our sub while the guys explain the ins and outs of its design and technology. This judging determines who gets first choice of competition times tomorrow, so we're all planning to be at our most charming, witty, and knowledgeable when the judges come by.
After some hard decision-making, we decided to eschew the vision events in favor of concentrating on the hydrophones and detecting the pinger. We also decided to toss the floating antenna that attached to our sub with a long, waterproof cable. Instead, we made a last-minute trip to Home Depot for a long, indoor antenna that would attach directly to the sub. It worked like a charm.
Thirty minutes before our competition time, we had a moment of panic when the sub's right motor wouldn't turn on (unless you poked it). Also, the sub was leaking just a tad. The guys quickly took the sub apart and discovered that the motor drivers needed to be switched. The leaking was taken care of with a few squirts of isopropyl alcohol and a liberal application of a toothbrush. (Over the course of this competition, I've come to the realization that isopropyl alcohol (IPA) will fix just about anything. Hydrophones not working? Clean the boards with IPA. Motors not working? Clean the boards with IPA. Software error? Re-code and then clean everything with IPA for good measure.)
We rushed up to the competition dock at the last possible minute, where Dave, the man in charge, grinned and tapped his watch. "12:14." (We had until 12:15.) However, we were surprised to find out that the rules of the pinger were different than we though. One of two pingers (with two different frequencies) is turned on, and the robot is supposed to find the pinger, no matter which frequency is going. We thought that at the beginning of the run, Dave would reveal the frequency of the pinger. Oops. Unsure that we could complete the hydrophone task under these new conditions, we elected to do only the simplest task of all: driving through the gate. We managed it easily, twice. Of course, only the last run counts towards points.
Now the guys are focusing on making the hydrophones work under the new conditions, a task that they believe is entirely possible.
Next up on the schedule is a practice run at 2:30 and static judging shortly thereafter. In static judging, the judges will come by the booth and examine our sub while the guys explain the ins and outs of its design and technology. This judging determines who gets first choice of competition times tomorrow, so we're all planning to be at our most charming, witty, and knowledgeable when the judges come by.
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