Got a cascade elevator with compact rigging. 100% timing belt. Need to get it wired up, but it seems like a good first draft and is a neat concept. Based on the idea you can do a cascade elevator with 1 timing belt (in our case 2 because symmetry). COG is a little high, but concept is cool.
Building t-shirt cannon. Not quite finished, and not the most conventional way to prepare for a season, but its helped rub off some of the rust, as well as learn a lot about pneumatics (non FRC lol) as well as swerve and just good design/fabrication processes.
Same thing we do every offseason … try to take over the world.
But seriously, we spend each May to Dec doing outreach and building skills. Every subteam has at least one summer camp and then the technical subteams spend the fall skill building (cadathons, special projects [eg designing a swerve drive like everybody else], and so on).
Recruited up to 150% of our previous size. Revived our website, Youtube and Facebook presence. Studied elevators. Experimented with MK4 swerves and developed a simulator for them. Assembled two Prusas and built an enclosure for one for nylon printing. Rehabbed an abandoned Xcare router. Rounded up a couple new sponsors. Presented to the School Board. Drove a Ghostbot around the middle school handing out candy to tykes already hyped up beyond the need for sucrose and robots. And best of all…we now have a capacious storage closet with so much room that there is - I swear its true - empty shelf space.
Rookie team formed up & registered for 2 regionals. Recruited 3 new mentors to assist. Got almost all tools, materials, and equipment out of my bowling alley and moved into the school. We were able to get a KOP chassis assembled and driving. Students have a rough idea of what Onshape and Java both are. Was able to take several studends to an offseason event (Cowtown) so they have some idea of what they are in for.
Looking forward to a very fun and interesting year.
We started with a minibot (WCD 2wd skid steer chassis – 18" frame). This was built by the first 5 or 6 students to sign up for our pre-rookie team. It’s not good, but it is FRC legal with electrical and weighs ~40 lbs with battery!
We moved on to a chairiot, similar to 1477’s above, but significantly bigger. We used raptor treads, in a 4’ by 3’ frame because we forgot to trim the cross beams and thought it was funny. Turns out it can hold upwards of 400lbs and still move, although we used a limiter for “kid mode” to avoid accel issues.
We made a custom throttle motor gearbox, and have been updating it with 4 gear ratios and a dual input option (all printable with files we posted on grabCAD).
I presented at the 2056 conference and 9062 attended as spectators.
Recently we have been playing around with code for a limelight and hope to get accurate vision targeting for reflective tape before moving on to apriltags in December.
Seeded 9th at the STEMley Cup Championship, playing in the double elimination tournament with 4907’s as pick 1 on alliance 4 (used #9992, with 5406’s comp bot)
We have been running CAD training sessions and including other local FRC teams, then uploading our newest ones to YouTube.
Despite being a pre-rookie, we are now mentoring 5036 and 6135. This arrangement started in October.
Started the Covalence Crew initiative, for teams in Ontario to pool resources and share training modules. So far this has led to a shared sponsor between teams resulting in a few newer drive station laptops here in Ontario.
Started a Loaner Parts Program for teams within driving distance. This has included our good friends 3739 and 6135, among others. Most recently 6135 borrowed our minibot for an outreach while they wait for RIOs to come back in stock.
Finished a 45 page business plan for awards documentation and internal goals and values.
Ran a mock kickoff this week and had the students design robots for Stronghold, with decent success.
Students have printed multiple custom parts that make the IGUS KOP stuff compatible with hex shafts
Helped to host international exchange students to our school (CIC) and did robotics lessons with them, including a Mindstorms build day and a MarioKart Balloon Battle with Roombas (latter is posted to our YT as well).
I’ve got one or two other things planned before winter break, but honestly this team has been running at full speed since August. So darn proud of the 40 or so students on the team and the 25 or so that show up once a week or more. Next stop is SWATposium in the morning!
A lot of what we are doing on 3512 at the moment is standardization of components and processes to decrease design, manufacturing, and assembly time all in the effort to maximize software development and driver practice.
We are attacking this on multiple fronts:
Standardization of Design
Drivetrain to be SDS MK4 swerve as long as the game allows
Using WCP Tube Plugs instead of structural gussets
Using WCP Elevator Blocks instead of bearing gussets
All gear ratios to be belted reductions directly off NEO where possible
Elevator, arm, and climber powertrains to use MaxPlanetary gearboxes in all cases
Using standard 0.196 diameter x 0.500 spacing hole pattern (#10-32 clearance & 3/16 rivet) on all tubes on all faces where possible
All pulleys above 12T to be MarkForge 3D printed w/ WCP 3D print insert installed for bore reinforcement
All arm joints to be constructed with large OD alum. round tube, tube nuts, and bronze bushings
Standardization of Manufacturing
Use WCP Tube Jig to workhold tube on Omio
Face off tube to length on manual mill
Cut and drill swerve tread using drill jig
Fall 2022 Projects:
Prototype NEO Swerve Chassis
We built a prototype swerve chassis to test out our new CNC workflow and verify a new chassis design with vertical corner 1x1s. The design is meant to be modular so all drivetrain tubes are interchangeable. If the 2023 game allows, this chassis will become our 2023 proto bot chassis and software can begin auton development very early into the season.
One of our senior students is working on a configurable elevator design based on Greyt Elevator V3 using the Multibody Design Workflow in anticipation of 2023 being a pick and place game. Multibody Design is where the entire structure of a subassembly is designed as part of one single SolidWorks part. This has numerous advantages:
Easier to design in 3D compared to 2D mastersketching
Better Assembly performance as there are no mates required to mate structural components relative to each other
This Design makes use of WCP Bearing Blocks and Tube Plugs which eliminate the need for us to machine 44 gussets per elevator compared to our 2019 elevator which was based off a previous version of the Greyt Elevator.
FRC is all about time optimization. Let’s use an elevator for a comparison:
Our 2019 elevator (nakedly stolen from Greyt Elevator V1 or V2) has 44 gussets for structure and for the bearing blocks. Our new elevator design needs none of those 44 gussets.
44 gussets we don’t have to design
44 gussets we don’t have to mate in the assembly
44 gussets we don’t have to CAM
44 gussets we don’t have to machine on the CNC
44 gussets we don’t have to post process
44 gussets we don’t have cleco then rivet in place
Oh and we build 2 robots so it’s really 88 gussets. At what point does a few hundred dollars in tube plugs (sort of offset by buying less aluminum plate stock) start to make sense?