Small enough for the side passage.
Small enough for the side passage.
Special Fits a 55 cm side passage. The lightest and cheapest of the six.
Weakness 24 cm cut, small battery, gentle slopes only.
Gen 2 · Scout · Concept. Simulated.
A 46 × 42 cm robot with a 24 cm blade for small city lawns and the narrow side passages bigger robots can't get through. It fits through a 55 cm gap. Its own small body is 3D-printed or moulded, with two geared wheel motors, a caster, and the same brain and sensors as every Mowlark.
Quark 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) | 46 × 42 × 30 cm |
|---|---|
| Mass | ≈ 7 kg |
| Drive | Two-wheel differential, 1 caster, 16 cm wheels, up to 0.4 m/s |
| Blades | 24 cm → 24 cm cut |
| Battery | 5S 4 Ah ≈ 72 Wh |
| Stripe spacing | 21.6 cm (10% overlap) |
| Edge lap | 26 cm from the edge; uncut band ≈ 14 cm for the trimmer |
| Turning in place sweeps | a 87 cm circle |
| 3D lidar blind zone | 41 cm ahead of the nose |
| Margin at raised beds | 40 cm |
| Best for | Lawns under ~250 m², passages from 55 cm wide. |
| Slopes | up to ≈ 12° |
| Part | What it does | Price | Source |
|---|---|---|---|
| Body (3D-printed panels or a moulded shell) | Weatherproof shell and blade guard | ≈ $60–120 | estimate |
| 2 × geared DC motors with encoders | Drive | ≈ $80 | estimate |
| Dual motor driver | Drive | ≈ $30 | estimate |
| Small BLDC blade motor + ESC with braking | Cutting | ≈ $60 | estimate |
| 5S Li-ion pack with BMS (~75 Wh) | Power | ≈ $90 | 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 | ≈ $1,879–1,969 | ||
mowlark