Your toolkit
Everything on your car. The highlighted parts are the ones this mission needs.
SPIKE Hubthe brain · has a built-in gyroused this mission
2 Medium motorsleft + right wheels · ports A, Eused this mission
Large motorsteers the back · port Dused this mission
Large motorthe turret: swings the distance sensor · port Cused this mission
Distance sensorport B · looks right, left and ahead on the turretused this mission
Color sensorunderneath, pointing down · port Fused this mission
Hub gyrolevel-up: exact 90° turnsoptional level-up
Your car: the Delivery Cart with a large-motor turret carrying the distance sensor at the front, and a color sensor underneath. How to build it →
What the car must do
- Phase 1 — walls: use your stop-and-look loop (with the dead end) until the belly sensor sees the black start line.
- Phase 2 — line: switch to line following until the color sensor sees green.
- Play a sound on the tile. One program, one button, no touching.
Everything combinedSwitching modesDebugging
Playbook cards for this mission: The right-hand rule · Dead ends: everything blocked · Follow the line · Green means go · Explore, then sprint
Maze size
| Along the route | Whole maze |
|---|---|
| 2.5 → 2.2 → 2.5 → 0.9 → 1.3 → 2 → 1.5 lane widths | about 10.6 × 6.2 lane widths |
With a 30 cm lane width the maze is about 318 × 186 cm. Lane spacing is one lane width plus a wall.
Success looks like
- The car escapes the walled part, including the dead end.
- It switches to line following at the doorway.
- It stops on green and plays its sound.