Check everything off before you start. Quantities are for one complete aircraft.
#Kit contents
| Item | Qty | NDAA kit | Standard kit | As shipped |
|---|---|---|---|---|
| Main plate with 4-in-1 ESC | 1 | ARK 4IN1 ESC | HGLRC 60 A 4-in-1 BLHeli_S ESC | ESC mounted; motor bullets and XT90 battery lead fitted; rail clamps pre-installed |
| Motor arm with motor | 4 | Ewing EM3115 860 KV | EMAX ECO II 3115 640 KV | Built; motor leads end in bullet connectors |
| Landing leg | 2 | Same | Same | Built |
| Battery plate | 1 | Same | Same | Rod clamps and clamping screws pre-installed |
| Rail tube (carbon) | 2 | Same | Same | Loose |
| Top plate (carbon) | 1 | Same | Same | Loose |
| Compute plate (carbon) | 1 | Same | Same | Loose |
| Standoff, M3 | 4 | Same | Same | Loose, with 8 M3 × 6 screws |
| Optical-flow sensor mount | 1 | Same | Same | Loose; clamps onto the rail tubes |
| Optical-flow sensor | 1 | ARK Flow (flow + rangefinder, DroneCAN) | MicoAir MTF-01P (flow + laser ToF, UART) | Loose, with cable |
| Telemetry radio pair (air + ground) | 1 | RFDesign RFD 900x-US, with all cables | MicoAir LR900-F 500 mW, with antennas and JST-GH cables | Loose |
| ESC signal cable, JST-SH to 4-pin Dupont | 1 | Same | Same | Loose |
| XT90 to XT60 adapters | 1 set | Same | Same | Connect an XT60 power module between the XT90 battery and ESC leads |
| Double-sided tape | 1 | Same | Same | For the flight controller, radio and flow sensor |
| Battery strap | 1 | Same | Same | Threads through the slots in the battery plate |
| Propeller, Master Airscrew MR 10×4.5 | 4 | Same | Same | 2 CW, 2 CCW |
| Prop adapter rings | 4 | Same | Same | On a sprue |
#Hardware
All screws are M3 socket-head cap screws (2.5 mm hex). All nuts are M3 nylon-insert lock nuts.
| Item | Qty | Used in |
|---|---|---|
| M3 × 6 socket head | 8 | Step 5, compute-plate standoffs (no nuts) |
| M3 × 30 socket head | 6 | Step 7, landing legs (3 per leg) |
| M3 × 35 socket head | 16 | Step 6, arms (4 per arm) |
| M3 nylon-insert lock nut | 22 | Steps 6 and 7 |
Tip
Lay the hardware out in labelled piles by length now. Every step tells you exactly which screws it uses, and a wrong length is the most common build mistake.
#Not included: you supply these
| Item | Notes |
|---|---|
| Flight controller | Any Pixhawk-standard autopilot (Cube, Pixhawk 6C/6X, CUAV or similar) running ArduPilot or PX4. It needs four DShot-capable outputs, a serial port for telemetry, and a CAN port (NDAA kit) or a second serial port (Standard kit) for the flow sensor. |
| Power module | XT60, 6S-rated, matched to your flight controller. The kit's adapters connect it to the XT90 leads. |
| RC transmitter and receiver | Needs a spare channel for the motor-interlock / kill switch. |
| Battery | 6S 5000 mAh LiPo with XT90. NDAA kit: use a pack of verified origin. |
| Companion computer and payload | Optional. Mounts on the compute plate. |
| Ground station laptop | Mission Planner or QGroundControl. The ground-side radio is in the kit. |