💰 Budget & Funding · Strategist + All · Intermediate
Budget in the Judge Interview
Judges will ask "what constraints did you work within?" Most teams answer with size or time. Teams that answer with specific cost data — and can point to it in the notebook — stand out immediately. Here are the six questions and the exact formula for answering them.
Why this matters: Judges score Criteria & Constraints. A team that mentions cost without data scores Proficient. A team that says "our drivetrain budget was $250, which eliminated 6-motor configurations, so we optimized gear ratio instead" — and then opens their notebook to the BOM — scores Expert. The notebook and the answer must match.
Every budget-related answer follows the same structure. Drill this until it's automatic.
Example: "Our drivetrain budget was $250 [constraint], which meant we couldn't afford a 6-motor configuration — that would have cost $400 [decision]. So we optimized gear ratio to 450 RPM on 4 motors, which hit our target speed without the extra motors [outcome]. It worked — we finished top 5 in driver skills."
🎤 The 6 Budget Judge Questions
"What was your budget for this robot?"
Developing
"We didn't really have a set budget — we just bought what we needed."
Red flag. Suggests no planning. Judges hear this constantly.
Proficient
"We had a limited budget so we tried to keep costs down where we could."
Vague. Not scorable against the rubric.
Expert
"Our build budget was $680 for parts, not counting the Brain and Controller which the district provides. That breaks down to $250 for the drivetrain, $180 for the intake, $60 for sensors, and $190 for structure and hardware. We came in at $638 — $42 under, which we kept as reserve for motor replacements." [Open notebook to BOM page.]
"How did cost affect your design decisions?"
Developing
"We tried to use parts we already had to save money."
Expert
"Cost directly shaped two decisions. First, our motor count — we evaluated 6-motor vs 4-motor. 6-motor would have cost $80 more and consumed budget we needed for the intake mechanism. We chose 4-motor and optimized gear ratio instead. Second, we chose steel C-channel for the base plate structure because it saved $18 over aluminum — the base plate doesn't benefit from being light. Those two decisions saved $98 total, which funded our GPS sensor."
"Did you consider any alternatives that were too expensive?"
Developing
"Not really, we went with what made the most sense."
Expert
"Yes — three specifically. [1] Pneumatic actuation for our intake deployment: the kit cost $120 and we needed the budget for motors, so we used a servo instead. [2] GPS sensor in addition to our IMU: $80 — we decided our odometry setup was accurate enough for this season and saved the $80. [3] Full aluminum frame: we used steel on non-critical structure and saved about $40. All three are documented in the notebook." [Point to alternatives table.]
"How did you fund your season / championships?"
Developing
"The school paid for most of it."
Expert
"Our district covers registration and core electronics — about $850 in value. For build parts we had a $680 self-fund target, which we covered through [two bake sales / team fundraising]. For Worlds travel — $4,200 for five people — we secured $2,500 from [a local engineering firm] who came in as a Gold sponsor, and $800 from [a parent's employer] through their community giving program. We raised the remaining $900 ourselves. We have it documented in our notebook including the sponsor thank-you report from last season."
"What would you build differently with a bigger budget?"
Expert — This is a Gift Question
"Two things immediately. First, we'd add GPS sensing — $80 — for absolute field positioning. We tested odometry this season and it drifts about 2 inches over a 15-second auton. GPS would fix that. Second, we'd add a third battery — $60 — so we can run three consecutive matches without any thermal management concern. Those two purchases total $140 and would have the highest impact on our competition consistency."
This answer shows engineering judgment, cost awareness, and that you know exactly what your robot's limitations are. It's very strong.
"How did you track your spending?"
Expert
"We use Onshape's BOM panel to maintain a live parts list — every part in our assembly has a part number and unit cost in the Description field. When we export to CSV and open in Google Sheets, our budget tracker updates automatically with per-subsystem subtotals. We check it before any new purchase to confirm we're within allocation. The current version is on page [X] of the notebook."
If you don't use Onshape BOM: "We maintain a Google Sheet with every purchase logged by subsystem, date, and cost. We reconcile it against our budget allocation monthly."
2-Person Budget Interview Drill
- Set up: One student is the judge. One student is the interviewee. The interviewee has their notebook open to the budget section.
- Round 1: Judge asks the 6 questions above in order. Interviewee answers without looking at notes. Time each answer — target 30–45 seconds each.
- Score each answer: Judge rates Developing / Proficient / Expert. Anything Developing gets retried immediately.
- Round 2: Repeat with notebook closed. If an answer changes significantly, the student doesn't actually know the numbers — more notebook review needed.
- Switch roles. Every team member who might be interviewed needs to be able to answer these questions, not just the strategist.
🚩 Red Flags That Lose Points
"We didn't really have a budget." This tells judges your program has no financial planning and the team has no awareness of what their robot cost. Even if true, never say this. Know the numbers.
Listing the BOM after you already built the robot and saying it was a constraint. Judges ask follow-up questions. "When did you establish this budget?" If the answer is "after we finished designing," it wasn't a constraint — it was a receipt.
Not knowing the price of your own parts. If you can't tell a judge what a V5 motor costs, you haven't engaged with the budget at all. Know: motor ($40), IMU ($30), GPS ($80), battery ($60). These come up.
"The district/school pays for everything." This might be mostly true, but it signals to judges that you have no independent program ownership. Frame it correctly: "The district provides the core electronics — about $850 in value — and we manage the build and championship budget ourselves."
The notebook is your backup. For every answer, you should be able to say "and you can see that on page X." Judges who see a student open their notebook and point to a specific page with real numbers know immediately that the answer was planned, documented, and real — not improvised. That's Expert.
Budget interview preparation applies ROI analysis — quantifying the return on every investment decision. Each part purchase generates a quantifiable performance benefit. The ROI framework converts budget decisions from preference-based to evidence-based — the same language judges use when they evaluate engineering rigor.
🎤 Interview line: “We prepare for budget interview questions by documenting the ROI of our three largest purchases. For our GPS sensor: $100 investment, auton win rate improved from 62% to 78%, generating approximately 1.6 additional auton points per match. Over 12 qualification matches, that is 19.2 expected additional points. This is the level of specificity that separates Expert budget answers from Developing ones.”
A judge asks: "How did your budget influence your robot design?" What is the strongest answer?
⬛ "We tried to keep costs low by reusing parts from last year."
⬛ "Our $350 budget required choosing between pneumatics and a GPS sensor. We ran an expected value analysis and chose GPS because consistent autonomous scoring generates more points per match than a one-time pneumatic endgame."
⬛ "We did not have a specific budget — we bought what we needed."
📝Notebook entry tip: Appendix — Grey slide — Document budget decisions in the Appendix as they happen: each time a cost trade-off was made, write a one-sentence entry. "Chose 11W cartridge over 5.5W to reduce stall risk, accepting a $12 cost increase" is a budget decision entry. These entries show cost was considered throughout the design process — not just at checkout.