Karthik's Effective FIRST Strategies 2024 (ChiefDelphi) / Slides / Video
10-5-2-1 Cycles Per Match (CPM) analysis
Score 6+ game pieces per match
Rank Points matter
Build within team's capabilities
The jack of all trades, is a master of none (be really good at one thing before trying to master all of it)
There are many ways to reduce cycle times, but these critical path concepts are the fundamental top priorities that will show the path to success
Smart Strategic Design: Follow Karthik's Effective Strategy and Design Principles
100% Mobile: Never break on the field where the robot is immobile
Overheated motors will shutdown. Set current limits and use proper gear reduction ratios to optimize motor life
Never implement untested code that can result in unresponsive robot
Watch Center of Gravity (CG) of robot so it does not tip over due to aggressive maneuvering or getting hit by another robot
Use proper electrical wiring strain relief techniques to prevent disruptions
Touch It Own It: Take no more than 1 sec to acquire gamepiece
Intake system should be able to almost instantly intake the object without fumbling
Driver needs to know quickly when object is acquired from across the field to avoid coming back with nothing
100 in 1: Scoring should be made with 100% consistency and within 1 sec after stopping
Robot should be able to shoot/place game object within 1 second after getting into position without missing
Shoot and move is an advanced feature that reduces overall cycle times but isn't a fundamental must have
Better to be slower but 100% consistent -- make every shot count
Don't forget the programmers! Never compensate a bad mechanical design with programming
Reduce gearbox backlash. Use a chain/belt reduction at the last stage of motion transmission as it can mask any backlash from the motor's gearbox
Select the appropriate gear reduction that provides the most controllability. The easier it is for the motor to turn (measured in how many Amps it draws), the easier it is to control. Choose a reduction that keeps the motor around Max Efficiency as much as possible. This depends on the amount torque or power that is required.
Understand and consider the following when choosing an Archetype:
Low goal vs high goal is worth x more points
Archetype x is the most likely to seed first
Archetype x will need archetype y in elimination matches
Which Archetype the team is capable of completing ON TIME in build season
Basic Archetypes:
Defender: Come in 3 categories: boxes on wheels, robots with broken mechanism, and 3rd robot in elims where their offensive potential is not as high as their defensive potential
3 ways to defend:
Zone defense: Stay in a specific area, cutting off lanes of traffic for the opposing alliance
Target defense: Focus on a signal opponent
Descoring: Descore game pieces from the other alliance. Check the rules first to see if it allows it!
Low goal specialist: Score only in the easiest location.
Super simple, only having one or two degrees of freedom outside of their drive train
Driver will have had a ton of stick time, and will be naturally quick
In early weeks of competition, you may see this type of robot being a top seed
Easy to achieve Rank Points based on number of pieces scored at expense of overall score (which would be low in early weeks of season)
Becomes less valuable as season goes on and teams interate their designs
High Goal specialist: Same concept as the low goal specialist but focus on scoring in the spot worth the most points in teleop
More complicated than the low goal bot which means more build time and less drive practice time
All Rounder: High goal specialist that also emphasizes auton and end game
Maximizes all scoring potential
Most flexible when partnering with other teams in alliance
Takes more time and more drive practice
Requires specific playbook to keep team and alliance in sync and provide strategic value
May be an Event 2 or State/District Championship goal rather than Event 1