Two robots. One hill. Three minutes.
The STEMsters Robotics Competition. An autonomous robotics competition for middle and high school teams in Southern California.
Deadline: Saturday, October 17
Drag the robot, or press the arrow keys.
Summit
Summit is the SRC game for 2026. Two autonomous robots, one red and one blue, compete on a small raised hill. A robot wins by pushing its opponent off the Hill, or by being higher on the Hill when time expires. Once a match begins, no one may touch or control them.
- Constraints
- Robots fit within 10 cm by 10 cm at the start and weigh 500 g or less. No height limit, and after the start signal they may expand without restriction.
- Controller
- A micro:bit running the team's own code controls the robot. Every other part is the team's choice.
- Match
- Matches last three minutes. The referee's field controller starts and stops both robots at once.
- Tournament
- Every team plays the same number of qualification matches, then the field seeds into a single-elimination bracket.
The Hill
A 3D-printed PLA mound, 42 cm across, rising 2 cm to a flat top. Each ring is a different colour so that a colour sensor can identify where the robot is.
| Zone | Outer dia. | Profile |
|---|---|---|
| 1 Plateau | 10 cm | flat, +2.0 cm |
| 2 Inner Slope | 16 cm | 18.4° |
| 3 Outer Slope | 22 cm | 18.4° |
| 4 Flat Band | 36 cm | flat, start zones |
| 5 Edge Band | 42 cm | flat, boundary |
Game Manual
Under $150, robot included
Most robotics competitions cost several hundred dollars per team before the first match is played, and that cost decides who gets to take part. Teams may compete with the kit, with a robot of their own design, or with a combination of the two.
- Kit bot + practice fieldOptional. A complete, competition-legal robot and a practice field. Does not include a micro:bit.
- $100
- micro:bitRequired for every robot, and sold separately from the kit.
- $20
The kit is a Wukong expansion board with a built-in battery, two continuous-rotation motors, an ultrasonic sensor for finding the opponent, a colour sensor for reading the zone, LEGO Technic chassis parts, and the starter code. It is programmed in MakeCode. The micro:bit is required and sold separately.
The optional kit gets you to a working robot quickly. The interesting part begins when you change it and see whether your idea works against another team.
Saturday, October 24, 2026
The gym at Arcadia High School, Arcadia, California. Parking and entrance details are emailed to registered teams the week before.
- 8:00–9:00 AM
- Staff setup and field testing
- 9:00–9:40 AM
- Team check-in, inspection, open practice, calibration
- 9:40–9:50 AM
- Opening meeting and rules briefing
- 9:50–10:00 AM
- Final calibration / teams queue for first matches
- 10:00–11:45 AM
- Qualification series
- 11:45 AM–12:20 PM
- Lunch + rankings finalized
- 12:20–12:30 PM
- Elimination bracket announcement / preparation
- 12:30–1:45 PM
- Elimination bracket
- 1:45–2:15 PM
- Buffer / exhibition matches if ahead
- 2:15–2:30 PM
- Awards and photos
- 2:30–3:00 PM
- Cleanup
Awards
The Champion, Finalist, Semifinalists, and Middle School Champion receive trophies. The overall Champion also takes home the Summit championship banner.
- Champion
- The bracket winner, middle school or high school.
- Finalist
- The runner-up: the team that reached the bracket final.
- Semifinalists
- The two teams that reached the semifinals of the bracket.
- Middle School Champion
- The middle school team that went furthest in the bracket, ties broken by qualification rank. If a middle school team wins the Championship, this goes to the next-best middle school team.
Register your team
Before you arrive
- Read the game manual
- Load the starter code and enter the team number we email you
- Get a signed consent and release form for each student
Every student needs a completed consent and release form. Sign it online.
$20 per team
Teams are 1–4 students in grades 6–12. You’ll receive your team number by email after registering.
Build from scratch or use the optional $100 Summit kit. A BBC micro:bit is required and can be purchased separately for $20. Practice fields are also available for testing and calibration before competition day.
Deadline: Saturday, October 17
Compete hard. Help the team that needs it. Treat a win and a loss the same way.
Climb together is the SRC conduct rule, and it applies to students and adults alike. Respect the referees and the volunteers — most of them are high school students who built this competition.