The goals for this robot are to be similar to those we explained in the FRC Guide to the MCC. We want this robot to be the 3rd robot on a competitive alliance.
We are still developing this but we wanted to get the basic idea published as teams are starting to finalize their designs and we hope some teams will be able to use ideas from this design to help them this season.
Strategic Analysis and Features
- Floor loading lets this robot utilize the depot for its cargo cycles and free up the loading stations for the faster robots on its alliance who may have well practice or pre-programmed paths to/from the feeder station. Floor loading reduces your cycle time because it’s possible that the balls will roll across the ground and come near your robot without you having to go back into the HAB.
- The in-frame intake mechanism means that while playing defense this MCC could take a cargo ball and bring it back to their side of the field to score. This will slow down the cycle time of their opponents.
- The single jointed arm can lift the cargo ball to score it in
- Rocket Level 1
- Rocket Level 2
- the Cargo Ship
- Those 3 scoring locations add up to a potential of 14 cargo scoring locations (not counting the 2 front cargo ship spot that start with cargo).
- Having the ability to score in Rocket Lvl 2 means that if this robot is paired with a robot that can hatch lvls 2 & 3 and score cargo in lvl 3, each of them only needs to score 6 game pieces to be able to complete the rocket and get the ranking point.
- Kitbot drive base
- The pictures shows a square 28″x28″ AM14U3 because that is the drive base we happen to own but any kit chaiss dimension can perform this role, you would just have to change some of the dimensions of the arms and tower. A wider kit bot could have a wider intake, a longer kit bot may have more room for a hatch mechanism on the back.
- Reminder to make sure you cut your kit chassis to be within the 120″ frame perimeter rule.
- The design uses mostly 2×1 and 1×1 aluminum extrusion but it most of the cases this could be exchange for other materials that you already own or that you like to use. A robot with similar abilities can be built from wood, REV extrusion, Andymark Peanut extrusion and many more options.
- The CAD doesn’t include all the gussets that would be needed to connect all the parts together.
- Single Jointed Arm
- A single motor, gearbox, and chain reduction is able to move the cargo intake up to score.
- There are a variety of ways to build a single jointed arm, the images show a AndyMark 100:1 57 gearbox mounted to two REV Universal Motor Brackets, driving a VEXpro 12t to 60t sprocket reduction.
- Surgical tubing would be added to the arm bars at the rear to help counterbalance the arm.
- The intake is a simple roller, this could be wheels or a drum as shown in the images. The drum is based on the VEXpro Versaroller System.
- Many different gearboxes could power the intake including a Versaplanetary, or AM 57 Sport. Another option is to use the Two Sport Gearbox that teams received in the kit of parts but only install a single motor, that is what is shown.
- Hatch Mechanism
- Single pneumatic solenoid valve drive the two cylinder to release it from our velcro.
- Similar to prototype we posted here.
“That’s been one of my mantras — focus and simplicity. Simple can be harder than complex: You have to work hard to get your thinking clean to make it simple. But it’s worth it in the end because once you get there, you can move mountains.” – Steve Jobs 1998