FLL Advance Driving Base Guide¶
The Advance Driving Base is the standard reference robot used in FIRST LEGO League competitions around the world. It provides a balanced, reliable platform with dual motors for differential drive, a rear caster for low-friction gliding, and downward-facing color sensors for navigation.
Technical Specifications¶
| Component | Part ID | Description | Sim Offsets & Physics |
|---|---|---|---|
| SPIKE Prime Hub | 45601 | 6-axis gyro/accelerometer, battery, 5x5 LED matrix | Center of chassis, mass: 215g |
| Left Drive Motor | 45602 | Angular Medium/Large Motor | Port A, anchor: [-0.064m, -0.007m, 0m] |
| Right Drive Motor | 45602 | Angular Medium/Large Motor | Port B, anchor: [0.064m, -0.007m, 0m] |
| Drive Wheels (Pair) | 56145 | 56mm diameter x 26mm width balloon rubber tires | Friction: 1.0, Radius: 0.028m |
| Rear Caster Skid | 49283 | Ball caster housing & 16mm steel ball | Friction: 0.005, Offset: [0, -0.025m, -0.065m] |
| Color Sensor Left | 45605 | Downward facing reflection sensor | Port C, Offset: [-0.024m, -0.01m, 0.075m] |
| Color Sensor Right | 45605 | Downward facing reflection sensor | Port D, Offset: [0.024m, -0.01m, 0.075m] |
| Chassis Beams & Frames | 39793, 32524 | Technic 11x15 and 7L structural frames | Compound box colliders |
Physical Dimensions¶
- Track Width (\(W\)): 128 mm (16 Technic studs apart).
- Wheel Diameter (\(D\)): 56 mm.
- Wheel Circumference (\(C\)): \(\approx 17.59\) cm.
- Total Mass: \(\approx 475\) g.
- Ground Clearance: 8 mm to 12 mm above the vinyl mat.
Port Configuration¶
- Port A: Left Drive Motor
- Port B: Right Drive Motor
- Port C: Left Downward Color Sensor
- Port D: Right Downward Color Sensor
- Internal: 6-Axis Motion Sensor (Gyro) in PrimeHub