Field & code
The numbers you need while writing autonomous or building to spec — Section 9 and 10 of Competition Manual V1.
AprilTags
On the underside of each CELL, facing down toward the tiles, bottom edge pointing at the centre of the field.
Each hive is bi-stable and flips when enough elements land in the upward cell, so the tag facing your camera changes mid-match. Track which cluster you see rather than assuming a fixed tag.
Match flow
- 2:30Match startCavalry charge
- 2:00Auto endsBuzzer
- 2:00 – 1:52Transition8 seconds; robots must be motionless (G403)
- 2:00Teleop beginsBells
- 1:00Nectar allowed in flowersG410 — major foul per nectar before this
- 0:20Endgame warningTrain whistle
- 0:00Match endsBuzzer
Match staging
| Where | Count | |
|---|---|---|
| Pollen | In each of the 4 flowers | 4 each (16) |
| Pollen | Red garden | 4 |
| Pollen | Blue garden | 4 |
| Pollen | Pre-loaded in each robot | 4 each (16) |
| Nectar | Each upward-facing cell, matching colour | 3 each (6) |
| Nectar | Each alliance area, matching colour | 5 each (10) |
Field & hive
- Field
- 144 × 144 in (365.75 × 365.75 cm)
- Tiles
- 36 × 24 × 24 × 0.59 in
- Tolerance
- ±1 in (±2.5 cm)
- Hive frame width
- 49.46 in (125.65 cm)
- Hive frame depth
- 38.95 in (98.95 cm)
- Pivot height
- 43.95 in (111.65 cm)
- Cell spacing
- 18.8 in (47.8 cm)
- Cell opening
- 20 W × 14 H × 12 D in
Inside the perimeter wall
Soft foam, 6 × 6 grid
Design for variation between events
At its base, its widest point
Above the tiles
Between the two cells of a hive
50.8 × 35.6 × 30.5 cm
Flower
- Top opening
- ≈4 in (10.15 cm) diameter
- Opening height
- ≈21.5 in (54.6 cm)
- Backstop
- 1.25 in (3.15 cm) tall
- Retrieval opening
- 3.55 H × 3.57 D in
- Lower ring hole
- ≈2.79 in (7.1 cm) diameter
- Scoring volume
- Between the top and middle rings
Above the tiles
Guides elements into the flower
9.0 × 9.1 cm, at the bottom
An element scores when at least partially inside
Scoring elements
- Pollen
- ≈2.8 in (7.1 cm), yellow
- Nectar
- ≈3.6 in (9.1 cm), red or blue
- Material
- Gopher ResisDent polyethylene
40 on the field · am-5851_yellow
8 per alliance · am-5852
Not perfectly spherical — design for variation
Zones
- Alliance area
- 97 W × 54 D in (246.4 × 137.15 cm)
- Loading zone
- 23 W × 11 D in (58.4 × 27.95 cm)
- Garden
- 23 × 2 in (58.4 × 5.1 cm)
Outside the field; includes the tape lines
Park here — alliance-specific, includes the tape
Opposite corners; unprotected, either alliance may remove elements
Robot limits
- Starting configuration
- 18 in cube
- Weight limit
- None
- Holding the start size
- Robot may hold itself in
- Floor grabbing
- Not allowed
R102
R104 — no explicit limit in FTC
R103
R204 — no mechanism to increase traction by gripping
Source
Everything here is from Competition Manual V1, Sections 9 and 10. The AprilTag IDs were read off the rendered manual page rather than its text layer — that text layer silently drops digits, and a wrong tag ID breaks an autonomous.
Always check the manual and the Playing Field Resources page for CAD, printable tags and team updates.