We are a High School Engineering and FIRST Robotics Competition Team from St. Agnes Academy and Strake Jesuit College Preparatory located in Houston, Texas. Spectrum focuses on introducing students to Science, Technology, Engineering, and Math (STEM) while enriching our members, schools, community, and the world. Thank you to our Sponsors for your support.

We are a High School Engineering and FIRST Robotics Competition Team from St. Agnes Academy and Strake Jesuit College Preparatory located in Houston, Texas. Spectrum focuses on introducing students to Science, Technology, Engineering, and Math (STEM) while enriching our members, schools, community, and the world. Thank you to our Sponsors for your support.















The FRC Season is fast approaching, and it's time to start preparing. The priority list window for FIRST Choice round 1 has started, and every team should have their lists submitted by Dec 1st.Spectrum has prepared a few documents that can help you set up your Priority list and use your Virtual Kit of Parts Vouchers.1. 2023 FIRST Choice & Voucher Recommendations GuideThis guide has recommendations for your priority list and how to use each voucher. This should be the starting point.2. 2023 Spectrum recommended FIRST Choice ItemsWe believe these items will help the majority of FRC teams and explain some of our reasons and how you can use the items. There are lots of FIRST Choice items, and some of the ones not listed on our list may be perfect for your team, so be sure to look through the entire list.3. 2023 Voucher Sample ChecklistNew for this year, we have created a Voucher Checklist Template. Thank you to FRC#1745 for the suggestion. Make a copy of this google spreadsheet so you can check off when you use your voucher codes and keep them in an easy-to-access location.  [Read More]

Dripping Springs District Recap

We are thrilled to be the 2022 Dripping Springs District Winners with 6800 Valor and 5503 Smithville Tiger Trons.A big thank you to 6800 for picking us to be on your alliance, you all have an awesome team and robot this year. Thank you to 5505 for joining us and being a great alliance member, your driving skill made our alliance so much better. Infrared Mechanism Notes from the Event1. Drivetrain - The SDS MK4i modules worked extremely well, we swapped 5 wheel treads during the event due to wear and cuts/delamination which is better than we experience with the MK3s at the Texas Cup event this past summer. Other than adding grease (we use PTFE) the swerve modules were maintenance-free.2. Intake - The intake performed very well, the floating roller was able to precisely pick up the cargo we wanted and do so quickly. We have a 3D printed pneumatic cylinder clevis break that we swapped with a metal one but that was honestly to be expected. The belt slipped off the pulley a few times but the design doesn't allow to fully come off so the intake continues to work, we will reprint that pulley slightly wider and possibly increase the flange height to prevent this in the future. 3. Ball Path - The ball path indexer and feeder rollers were pretty much maintenance free they just worked all competition. We clean all our rollers with simple green between matches to remove hair and dust and that's all we had… [Read More]

2022 Week 6 Recap

Week 6 Design RecapIntake TestingWe were able to do some destructive testing of the intake and so far it looks pretty good. Some minor damage to the front bar which is just there to protect the roller from direct impacts anyway. We were already planning to switch that to polycarbonate so it shouldn't dent in the future.VideoClimber TestingThe climber is working cleaner, the next steps will be to reduce the swinging and automate the climb. We will be getting the climber on the competition robot shortly.VideoMore progress photos - https://photos.spectrum3847.org/2022-FRC-1/2022-Build-Season-1/Week-7/- Spectrum [Read More]

2022 Day 37: Design Recap and Launcher Videos

 Design RecapLauncher Test VideosFender ShotTarmac ShotMore videos on our photo gallery.- Spectrum [Read More]

2022 Day 36: Climber Test and Practice Bot Progress

Climber Test VideoHere is our latest climber test video from this weekend. We still have several tweaks to do but it is working well. This is climbing with around 80lbs and conservative current limits on the two falcons (40A) and being cautious with the control input.  Climber VideoPractice Robot ProgressWe were able to get the practice robot near-complete (it won't have a climber until later in the season if at all). We should have some launcher and driving video in the next few days. We happen to have built our 2022 robot to same dimensions as our 2021 robot, so we are using a pair of 2021-8515 bumpers to test on the practice robot, this robot will be 3847.Intake Test Video- Spectrum [Read More]

2022 Day 32 & 33: Build Progress

A quick update showing some of the build progress.Our CNC router, laser cutter, lathes, and 3D printers have been getting used a lot this week turning out parts for the practice robot.We use the lathe to insert star nuts into the end of the tubes we use as dead axles and standoffs on the robot.We upgraded our tube clamp to the WCProducts tube clamp and it works great on our ShopSabre 23 router.We 3D print the vast majority of pulleys that we use on our robots.The practice robot drive train is assembled, we should be able to wire it this weekend.As we test the first versions of some mechanisms we will make them out of plywood as we know we will iterate these quickly. This does allow us to produce all of the shafts, rollers, motor mounts, etc.Her is the current state of the practice robot with much of the ball path plates, and the wooden launcher being held in place.- Spectrum [Read More]

2022 Day 29: CAD Updates

 We have been working on completing the CAD model of our robot the past few days. We still have a few things to add (intake roller and modifications,  the main 4" wheel in the ball path, and ball path funneling) but it's very close to complete.The full CAD is available here: 0. Infrared 2022 (Top Level Document)Current Design SpecsSize: 24.5 x 27.5Motors: 15 Falcons: 8 drive, 1 intake, 2 ball path, 2 launcher, and 2 climber (space for 4), 2 Linear servosPneumatics: Intake, and climber, we may add a physical stop to the ball path with pneumatics.- Spectrum [Read More]

Everybot Alternatives, Changes, and Checklist

 Photon 8515 is building an EverybotLast season we created our development team FRC#8515 Photon to allow our new students a chance to have more hands-on experience during the season and get to compete at 2 district events with the robot they are building.They are using the Everybot 2022 Design and making minor adjustments based on the way that Spectrum often designs and builds robots. Several Spectrum mentors and alumni went through the Everybot CAD and build documentation and worked out some alternatives and possible changes to the build that may work for some teams.We also have begun making a document that lists the things we think are important to check on your Everybot 2022 to ensure it will be able to compete fully in every match.Before we link to the documents we have a couple disclaimers. Please head these warnings, it is recommended that most teams follow the Everybot Build Documentation as closely as possible to replicate the result they showed in the reveal video. AlternativesThe listed alternatives are all options that may work but haven’t been tested.These are most useful if you already have some items on hand and would like to use them without ordering new things due to budget constraints.You will likely need to make other modifications to the build instructions, other parts of the robots, software, etc if you use any alternatives that aren’t listed in the official Everybot BOM. The Everybot team nor Spectrum will be able to support many of these possible alternatives.Don’t make substitutions… [Read More]

2022 Day 22, 23, & 24: Design Recap

Day 22: Bootcamp Build Day 2We had 5 young FRC teams from the Houston area in our lab to help them get their drive trains started and talk to them about the Everybot design and what they need to do to produce it.Day 23: Intake/Ball PathAs we show below in the design recap the intake and ball path system was in heavy development the past few days. We had a lot of detailed requirements on how we wanted to make the intake function and getting all those requirements packaged into the robot and functioning nicely wasn't going to be easy. Early on we assumed we'd have a multi-roller deployable intake similar to our 2020/2021 intakes and many of the ones we have seen by other teams. Last week we realized we could base our intake off our 2019 and it would allow us to have our intake not extend as far out of the frame and still let us meet our other intake objectives. The test setup we made this weekend confirmed the single intake roller with a kicker bar deployed on the bumper would bring the ball up onto the bumper nicely but there was a potential dead space before the ball would hit our ball path rollers. Through conversation, we were able to figure out that flipping out another ball bath roller that stays above our bumper so we can confidently leave it deployed all match will solve the dead space issue, prevent unwanted balls from entering our robot,… [Read More]