23
Jan
11

FRC build week 2 musings

I hope everyone’s Robot planning is going well. I’m also hoping all the teams have their strategy down and have a plan to fit the Robot to the strategy. Make sure whatever strategy is chosen is done well. If it’s a defensive strategy make sure the Robot is built to push other Robots around or to be the best blocker possible. If you have a scoring robot, make sure you can score quickly and efficiently.

The Kit Of Parts (KOP) came with many sensors, everyone should try to make use of them where they can. The sensors can be used to aid the driver in Robot operation and to help in autonomous mode. Some of the sensors like the wheel encoders can let you know the distance you move. The linear encoder can help the Robot tell the distance an actuator moves. The gyro can help your robot tell which direction it is pointing. All the sensors have examples that are runnable. To get to them, open LabVIEW and in the lower right hand corner of the opening screen are the FRC examples. All examples have diagrams of how to hookup the sensor. Also, all the data sheets are located on the site http://www.usfirst.org/roboticsprograms/frc/content.aspx?id=18530. Make sure you scroll down.

Right now is a very important time in the build, some parts of the Robot are coming together well, some parts are not coming together and are in need of redesigned. Don’t get discouraged, just keep working at it. There are only four weeks left in the build season but it is plenty of time to get things together.

One thing people should think about is Prototyping. Prototyping is to build a quick and dirty model of whatever you are prototyping. One example is the kicker on last year’s robot. We (team 704) built a wooden frame, screwed it down to the floor and then used different things to kick a soccer ball. We made a kicker and tried various pneumatics, surgical tubing, and bungee cords. We made prototypes of different ways to kick a soccer ball. This year you might prototype various ways to put the game pieces on the scoring pegs. Come up with a way to score the game pieces and build something to try out your ideas.

It’s important to get your robot to a point you can test it before the ship date. Getting out there and running it through its paces is a key to success. Last year’s FRC challenge contained humps the robot had to go over. Our robot was ready somewhat early (a week early) and so we did some testing on a practice field.

During testing last year, after a couple of test runs our chains started to fall off and this bent axle is what we discovered. This along with a torn aluminum pan holding the battery. You don’t want to find out about this during the competition.

Good luck to all. Figure out what to do and do it.

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