FRC 1444 - 2016 Reveal

Hey all!

Here is FRC 1444 The Lightning Lancers 2016 robot. We had a great time making this robot with a relatively small team this year. We were able to get the robot running more than a week in advance which was a huge first for us; we even had time to scrimmage. This was also the first year we modeled over 90% of the bot.

http://i.imgur.com/4sDjgEl.jpg

  • Low and High goal capable with vision tracking
  • Low bar capable
  • Rock wall, rough terrain, and possibly moat capable
  • Boom is in the works for hanging, sally port, and draw bridge

We spent a good amount of time planning, shooting, and editing our reveal video this year. We hope you like it! See you in St. Louis!

Very impressed with your robot this year, guys. Can’t wait to see it in person and play against and hopefully with you at STL!

Looks great, love the shooter! It looks like it articulates to a fixed position, is that correct? How does that mechanism work? Also, it looks to me like your breaker isn’t the most accessible, you might want to think of other places to put it in case the inspectors don’t like it there.

I wish you the best of luck in building your climbing mechanism and the with the rest of the season!

That is some nice looking vision tracking. Care to give any insight about it?

Got to briefly see these guys running at 1706’s field. A ton of power in their shooter! Looking forward to seeing you guys run at Chaifetz.

Thanks!

The shooter does move to a fixed up position which can be adjusted between matches if necessary (I don’t see us ever doing that, though). Basically, the shooter has two pieces that form a smooth, quarter-ring for the ball to roll on. The pivot motor for top of the shooter (with the wheels) is able to rotate 90 degrees in its mount. This rotation opens/closes the latch which allows the shooter to pivot up and down.

Here’s a render of the mechanism: http://i.imgur.com/wV21jDP.jpg

We are using a PS3 Eye camera with a 12-RGBLED ring and running OpenCV on an ODROID. We do some thresholding to find green blobs and then look for corners. Since we know the dimensions of the target we can get the transform from the camera to the target using the eight corner points (highlighted in the video). We then find the angle (yaw) between a vector straight out of the shooter and a vector from the shooter center to the target center. The magnitude of the second vector is the distance to the target which also determines the shooter wheel speed.

The big tricks are setting the exposure correctly to minimize ambient light and finding the transform. Once you have the transform, you can do any sort of vector math you’d like to determine position on the field, etc.

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