Tracks for slopes and soft ground.
Tracks for slopes and soft ground.
Special Tracks spread 40 kg over a big footprint and hold slopes up to 25°.
Weakness Slowest of the six; tracks scuff the turf on tight turns.
Gen 3 · Climber · Concept. Simulated (tracks approximated by road wheels).
An 86 × 76 cm tracked robot for steep banks, wet lawns and soft soil, where wheels dig in or slide. Rubber tracks spread its 40 kg over a large area, so it marks the lawn less than its weight suggests. Turning on the spot scrubs the tracks hard, so the planner's gentle corners matter most here.
Graviton is a concept: simulated, not built. Parts and prices are estimates, in US dollars (Nov 2026). Drawings are generated from the profile the simulator uses.
| Body (L × W × H) | 86 × 76 × 45 cm |
|---|---|
| Mass | ≈ 40 kg |
| Drive | Tracks (skid-steer), 18 cm wheels, up to 0.5 m/s |
| Blades | 46 cm → 46 cm cut |
| Battery | 10S 15 Ah ≈ 540 Wh |
| Stripe spacing | 41.4 cm (10% overlap) |
| Edge lap | 43 cm from the edge; uncut band ≈ 20 cm for the trimmer |
| Turning in place sweeps | a 115 cm circle |
| 3D lidar blind zone | 83 cm ahead of the nose |
| Margin at raised beds | 85 cm |
| Best for | Slopes up to 25°, wet or soft lawns. |
| Slopes | up to ≈ 25° |
| Part | What it does | Price | Source |
|---|---|---|---|
| Rubber track set with sprockets and road wheels | Drive | ≈ $300–500 | estimate |
| Welded steel or extrusion frame + panels | Chassis and blade guard | ≈ $200 | estimate |
| 2 × geared BLDC drive motors with encoders | Drive | ≈ $250 | estimate |
| 2 × ODrive S1 motor controllers | Drive | $298 | ODrive shop |
| BLDC blade motor + VESC-class controller with braking | Cutting | ≈ $150 | estimate |
| 10S Li-ion pack with BMS (~540 Wh) | Power | ≈ $350 | estimate |
| Raspberry Pi 5 8 GB + SSD + cooler | The brain | ≈ $215–245 | Raspberry Pi list price |
| simpleRTK2B GNSS + antenna | Centimetre positioning | ≈ $235 | ArduSimple |
| BNO085 IMU | Heading and tilt | $30 | Adafruit |
| Livox Mid-360 3D lidar | Seeing obstacles | $979 | list price |
| Pico 2 + safety parts | The hardware blade interlock | ≈ $100 | estimate |
| Total | ≈ $3,107–3,337 | ||
mowlark