Full Moon Robotics 2020 - Robot Reveal: FM-87

Hi everybody! Full Moon Robotics is proud to announce our 2020 robot for our Robot in 3 Days challenge: FM-87! Watch our reveal video below!

image

We’ve had a great time doing the challenge for our first year! Thanks to all of our sponsors, and everybody who watched our stream and our videos! We can’t wait to see what you build, and we hope you have a great season!

10 Likes

Hey all, I’d love to chime in here! I’m the Visual Media team lead for FMR- we’re planning on releasing more videos throughout the season from all the footage we captured, but please check out our build thread for links for the videos we’ve already released!

1 Like

I’m wondering about some of the strategic decisions made on the robot and whether they were intentional or time/resource based. Was not climbing a conscious decision or forgone to show other game elements in more detail? Similarly was the inability to hold 5 balls a choice?

It would be awesome to see some recommendations for teams regarding how to improve upon the design if they were going to take inspiration from you guys! I worry that if this were presented to a rookie team as “you should do this” that they might not do some parts of the game that are absolutely critical to having a successful season.

10 Likes

Hi, Alex from Full Moon Robotics here. There’s quite a few sections of this question, so I’ll do my best to answer each part.

For your first point about climbing, it was our intention to climb during the match. From our strategy, we believe that to be a competitive robot you must be able to manipulate power cells well and either climb or spin the control panel. We attempted to do both of these, and as a result of our time constraints and resource constraints we were unable to finish a fully functional climber on our robot before the end of the three days. We prototyped our climber mechanism starting on day one, focused a good bit on it on day two, but ran into issues on day three. Our original intention was to deploy a hook onto the generator switch and climb using a winch mechanism. However, with little time left, we decided to not attempt a climber we were unsure of and having difficult with. For your second point regarding 5 power cells, we should be able to hold them all whiten our robot (though, due to only securing one game piece, couldn’t test it). The tube in the middle is large enough to hold three power cells, leaving two to be near the base of our robot.

As mentioned above, our robot design is not quite up to what we would recommend a rookie team to do. With this said though, I believe every team should strategize and design based on the resources (time, material, experience, manpower, etc) available to them. If a team has a similar or less level of resources available than we did, then this would be a reasonable robot to be constructed. However, we do hope that teams also improve upon our design in the following three ways:

  1. Improved/Redesign of intake
  • We believe that an important part of this years game (and most games) is the speed and reliability that you can intake and control game pieces. An unreliable intake can greatly slow down your cycle time, and in this game where reaching capacity is important, this is no exception. Our current design struggles with getting the balls from the roller to the main body of the robot. We considered adding in curved poly-carbonate to help direct the ball as it enters the bot. The intake itself also likely should be compressing the ball a bit more, perhaps moved back about 1/2."
  1. Reliable climber
  • Through our strategy discussion, we realized the importance of having a climber, specifically a reliable one. A consistent solo climb with keeping the generator switch level will yield 40 points, which is a huge incentive to go for. We believe that the best climbers (and the ones teams should target to build) will be the most consistent climbers at 40 points. This holds especially true in eliminations, where the extra ranking point doesn’t matter. There is a fair risk to double climbing; robots could fail to climb, hit opponents in the rendezvous zone or unlevel the switch. Since two robots climbing with an unlevel switch would only yield 50 points, there is a large emphasis on consistency.
  1. High goal shooting
  • We passed over high goal shooting from the beginning, preferring to go for (hopefully) quicker low goals to reach capacity quicker. Since the inner high goal shot appears to be difficult, the reward for shooting towards the high goal is ~2x (or reasonably close). When you account for the occasional miss, the extra time shooting, and possibility of defense, the extra points earned by shooting high may not outweigh the faster capacity. We do believe that shooting high can yield you extra points at the highest levels of competition where the capacity will be reached quickly, but low goal robots can be just as effective at low to mid-tier competitions.

Is the bot able to go over the bump with 4 inch wheels?

Sam from FMR here-

The bot was designed to go under the trench for most of the match, and our wheel choice matched that. With effort, it can cross into the rendezvous zone for the climb.