Tool
Bill of materials
Every part the book specifies, its listed or estimated weight, its indicative price, and what can take its place. This is a reference BOM, not yet a retailer-linked shopping list.
Prices go stale; this page cannot stop them. Figures were checked row by row between 2026-05-11 and 2026-08-11. They are US list prices in dollars, before shipping and tax. Source labels marked “URL pending” are not purchase links. Confirm stock, exact SKU and price at a named retailer before ordering.
| Build | Variant | Category | Part | Qty | Unit price | Line | In flight | Checked | Source status | Substitute with |
|---|---|---|---|---|---|---|---|---|---|---|
| Shared Gear | Shared | Radio | RadioMaster Boxer ELRS 2.4 GHzRM-BOXER-ELRSPro-tier radio for shared use across builds | 1 | $154 | $154 | — | 2026-08-10 | RDQ — URL pending | Any internal-ELRS 2.4 GHz radio with hall gimbals and EdgeTX |
| Shared Gear | Shared | Goggles | DJI Goggles 3DJI-G3Pro-tier HD goggles | 1 | $689 | $689 | — | 2026-08-10 | RDQ — URL pending | Walksnail Avatar HD Goggles X for cross-build alternative |
| Shared Gear | Shared | Goggles | Skyzone SKY04X ProSZ-04XPROBudget-tier analog alternative | 1 | $400 | $400 | — | 2026-05-11 | RDQ — URL pending | Any analog goggle with module bay |
| Shared Gear | Shared | Charger | HOTA D6 ProHOTA-D6PROCovers every cell count in both builds | 1 | $160 | $160 | — | 2026-05-11 | RDQ — URL pending | Any AC+DC 1S-6S balance charger 200W+ |
| Shared Gear | Shared | Charger | SkyRC B6neoSKYRC-B6NEOBudget alternative for 1S-4S | 1 | $55 | $55 | — | 2026-05-11 | RDQ — URL pending | ISDT 608AC alternative |
| Shared Gear | Shared | Receiver (first) | RadioMaster RP1 V2RM-RP1V2Cheap first RX for sim binding | 1 | $19 | $19 | — | 2026-08-10 | RDQ — URL pending | Happymodel EP1/EP2 alternative |
| Shared Gear | Shared | Antennas | Foxeer Lollipop 4 RHCPFX-LP4-RHCPPair for VTX and spare | 2 | $16 | $32 | — | 2026-05-11 | RDQ — URL pending | Any RHCP omni from named manufacturer |
| Shared Gear | Shared | Tools (soldering) | TS101 80W TS101 ironTS101One iron covers both builds | 1 | $75 | $75 | — | 2026-05-11 | RDQ — URL pending | Any USB-C PD iron with TS-style tips |
| Shared Gear | Shared | Tools (multimeter) | AstroAI Pocket multimeterAI-DM10Continuity test before first power-up | 1 | $25 | $25 | — | 2026-05-11 | RDQ — URL pending | Any DC voltmeter with continuity beeper |
| Shared Gear | Shared | Simulator | Liftoff FPV Drone RacingLIFTOFFSim before sky | 1 | $20 | $20 | — | 2026-05-11 | Steam | FPV Freerider or Velocidrone alternative |
| Build 1 — Whoop | HDZero | Frame | BETAFPV Meteor75 Micro frameMeteor75-frameManufacturer-supported frame for the selected HD canopy | 1 | $5 | $5 | 5.68 g | 2026-08-11 | manufacturer or named retailer | Any 75 mm HDZero-class frame matching the selected canopy |
| Build 1 — Whoop | HDZero | Canopy / camera mount | BETAFPV Micro Canopy for HD CameraMicro-HD-canopyMounts the Nano V3 without assuming an analog canopy fits | 1 | $5 | $5 | 2.5 g | 2026-08-11 | manufacturer or named retailer | Canopy documented for the frame and camera |
| Build 1 — Whoop | HDZero | Motors (×4) | BETAFPV 0802 Freestyle 22000 KV0802-22kv1S 75 mm HD torque-leaning KV | 1 | $40 | $40 | 7.52 g | 2026-08-10 | manufacturer or named retailer | Any 0702/0802 1S 18-25k KV |
| Build 1 — Whoop | HDZero | AIO FC/ESC | Happymodel SuperX HD ELRS 1-2S AIOSuperX-HD-F4-ELRSF4 with onboard ELRS and free UART for HDZero | 1 | $55 | $55 | 3.5 g | 2026-08-10 | manufacturer or named retailer | 1S 5A AIO F411/F722 onboard ELRS and free UART |
| Build 1 — Whoop | HDZero | HD VTX/cam | HDZero Whoop V2 bundleHDZ3104Weigh included antenna and hardware before final AUW | 1 | $100 | $100 | 7.6 g | 2026-08-10 | manufacturer or named retailer | Whoop-class HD VTX/cam matched to HDZero goggles |
| Build 1 — Whoop | HDZero | Packs | BETAFPV LAVA 1S 450 mAh BT2.0LAVA-1S-450-BT2One battery flies and three remain session or spare packs | 1 | $18 | $18 | 12.2 g | 2026-08-11 | manufacturer or named retailer | 1S 450-550 mAh BT2.0 named brand |
| Build 1 — Whoop | HDZero | Props | Gemfan 1610-2 40 mm 1.0 mm1610-2-1.0Three sets minimum because props are consumables | 3 | $5 | $15 | 0.96 g | 2026-08-10 | manufacturer or named retailer | 40 mm props matching frame ducts and motor shaft |
| Build 1 — Whoop | HDZero | Buzzer / finder | VIFLY Finder MiniVIFLY-FMOutdoor recovery insurance | 1 | $9 | $9 | 3 g | 2026-05-11 | manufacturer or named retailer | FC beeper if indoors only |
| Build 1 — Whoop | HDZero | Required power lead | BETAFPV BT2.0 1S Whoop Cable Pigtail00313631Install one in place of the SuperX A30 lead; five remain bench stock | 1 | $6 | $6 | 0.91 g | 2026-08-11 | manufacturer or named retailer | Direct-solder BT2.0 lead rated for AIO current |
| Build 1 — Whoop | HDZero | Crash spare | BETAFPV Micro Canopy for HD CameraMicro-HD-canopyBought for repair stock and not carried | 1 | $5 | $5 | — | 2026-08-11 | manufacturer or named retailer | Matching canopy for selected frame and camera |
| Build 1 — Whoop | Walksnail | Frame | BETAFPV Meteor75 Micro frameMeteor75-frameManufacturer-supported frame for the selected HD canopy | 1 | $5 | $5 | 5.68 g | 2026-08-11 | manufacturer or named retailer | Any 75 mm Walksnail-class frame matching the selected canopy |
| Build 1 — Whoop | Walksnail | Canopy / camera mount | BETAFPV Micro Canopy for HD CameraMicro-HD-canopyNominally matches the Avatar camera width; dry-fit the complete assembly | 1 | $5 | $5 | 2.5 g | 2026-08-11 | manufacturer or named retailer | Canopy documented for the frame and 14 mm nano cameras |
| Build 1 — Whoop | Walksnail | Motors (×4) | BETAFPV 0802 Freestyle 22000 KV0802-22kv1S 75 mm HD torque-leaning KV | 1 | $40 | $40 | 7.52 g | 2026-08-10 | manufacturer or named retailer | Any 0702/0802 1S 18-25k KV |
| Build 1 — Whoop | Walksnail | AIO FC/ESC | Happymodel SuperX HD ELRS 1-2S AIOSuperX-HD-F4-ELRSF4 with free UART for Walksnail MSP | 1 | $55 | $55 | 3.5 g | 2026-08-10 | manufacturer or named retailer | 1S AIO with onboard ELRS and a free UART |
| Build 1 — Whoop | Walksnail | HD VTX/cam | Walksnail Avatar HD Mini 1S KitWS-AVATAR-MINISystem mass includes camera and antenna; dry-fit canopy clearance | 1 | $150 | $150 | 12.3 g | 2026-05-11 | manufacturer or named retailer | Walksnail Avatar Mini 1S or current whoop-class HD kit |
| Build 1 — Whoop | Walksnail | Packs | BETAFPV LAVA 1S 450 mAh BT2.0LAVA-1S-450-BT2One battery flies and three remain session or spare packs | 1 | $18 | $18 | 12.2 g | 2026-08-11 | manufacturer or named retailer | 1S 450-550 mAh BT2.0 named brand |
| Build 1 — Whoop | Walksnail | Props | Gemfan 1610-2 40 mm 1.0 mm1610-2-1.0Three sets minimum because props are consumables | 3 | $5 | $15 | 0.96 g | 2026-08-10 | manufacturer or named retailer | 40 mm props matching frame ducts and motor shaft |
| Build 1 — Whoop | Walksnail | Buzzer / finder | VIFLY Finder MiniVIFLY-FMOutdoor recovery insurance | 1 | $9 | $9 | 3 g | 2026-05-11 | manufacturer or named retailer | FC beeper if indoors only |
| Build 1 — Whoop | Walksnail | Required power lead | BETAFPV BT2.0 1S Whoop Cable Pigtail00313631Install one in place of the SuperX A30 lead; five remain bench stock | 1 | $6 | $6 | 0.91 g | 2026-08-11 | manufacturer or named retailer | Direct-solder BT2.0 lead rated for AIO current |
| Build 1 — Whoop | Walksnail | Crash spare | BETAFPV Micro Canopy for HD CameraMicro-HD-canopyBought for repair stock and not carried | 1 | $5 | $5 | — | 2026-08-11 | manufacturer or named retailer | Matching canopy for selected frame and camera |
| Build 1 — Whoop | DJI O4 | Frame | Happymodel M80 frameM80DJI O4 needs the wider stack pocket | 1 | $20 | $20 | 7.75 g | 2026-08-11 | manufacturer or named retailer | Mobula8 O4 for an 85 mm variant |
| Build 1 — Whoop | DJI O4 | Canopy / camera mount | Happymodel Mobula7 O4 fixed camera bracketMobula7-O4-bracketFrame alone does not mount the camera; weigh screws | 1 | $5 | $5 | 0.9 g | 2026-08-11 | manufacturer or named retailer | Manufacturer-matched O4 bracket |
| Build 1 — Whoop | DJI O4 | Motors (×4) | Happymodel EX0802 22000 KVEX0802-22kvHeavier O4 payload wants a larger stator | 1 | $30 | $30 | 6.8 g | 2026-08-10 | manufacturer or named retailer | 0802/0902 1S/2S 18-25k KV |
| Build 1 — Whoop | DJI O4 | AIO FC/ESC | BETAFPV Matrix 1S 3IN1, BMI270Matrix-1S-3IN1Free UART supports O4 HD MSP | 1 | $40 | $40 | 4.2 g | 2026-08-11 | manufacturer or named retailer | 1S AIO with documented MCU and a free UART |
| Build 1 — Whoop | DJI O4 | HD VTX/cam | DJI O4 Air Unit + cameraDJI-O4-AUMatches DJI Goggles 3 | 1 | $170 | $170 | 10 g | 2026-05-11 | manufacturer or named retailer | Whoop-sized regular O4 air-unit and camera kit |
| Build 1 — Whoop | DJI O4 | Packs | BETAFPV LAVA 1S 450 mAh BT2.0LAVA-1S-450-BT2One battery flies and three remain session or spare packs | 1 | $18 | $18 | 12.2 g | 2026-08-11 | manufacturer or named retailer | 1S 450-550 mAh BT2.0 |
| Build 1 — Whoop | DJI O4 | Props | Gemfan 45 mm-3 tri-blade 1.0 mm45mm-3-1.0Three sets minimum because props are consumables | 3 | $4 | $12 | 1.72 g | 2026-08-11 | manufacturer or named retailer | 45 mm props matching frame and motor shaft |
| Build 1 — Whoop | DJI O4 | Buzzer / finder | VIFLY Finder MiniVIFLY-FMOutdoor recovery insurance | 1 | $9 | $9 | 3 g | 2026-05-11 | manufacturer or named retailer | FC beeper if indoors only |
| Build 1 — Whoop | DJI O4 | Crash spare | Happymodel Mobula7 O4 fixed camera bracketMobula7-O4-bracketBought for repair stock and not carried | 1 | $5 | $5 | — | 2026-08-11 | manufacturer or named retailer | Matching bracket for selected frame |
| Build 1 — Whoop | Analog | Frame + canopy | BETAFPV Air65 II frame + Canopy for Micro Camera 2022Air65-IICamera mount is supplied by the separate canopy SKU | 1 | $9 | $9 | 4.25 g | 2026-08-10 | manufacturer or named retailer | Any 65 mm analog frame with a camera-matched canopy |
| Build 1 — Whoop | Analog | Motors (×4) | BETAFPV 0702SE 23000 KV0702SE-23kv1S 65 mm analog motor class | 1 | $25 | $25 | 5.68 g | 2026-08-10 | manufacturer or named retailer | 0702/0802 1S 18-25k KV matching shaft |
| Build 1 — Whoop | Analog | AIO FC/ESC/VTX | BETAFPV Matrix 1S 5IN1, BMI270Matrix-1S-5IN1One-board analog solution | 1 | $50 | $50 | 3.92 g | 2026-08-10 | manufacturer or named retailer | 1S AIO with onboard ELRS and analog VTX |
| Build 1 — Whoop | Analog | Analog cam | BETAFPV C03 micro cameraC03Lightweight analog camera | 1 | $15 | $15 | 1.45 g | 2026-08-10 | manufacturer or named retailer | 1000-1200 TVL micro cam fitting the canopy |
| Build 1 — Whoop | Analog | Packs | BETAFPV LAVA 1S 450 mAh BT2.0LAVA-1S-450-BT2One battery flies and three remain session or spare packs | 1 | $18 | $18 | 12.2 g | 2026-08-11 | manufacturer or named retailer | 1S 300-450 mAh BT2.0 |
| Build 1 — Whoop | Analog | Props | Gemfan 1208-3 31 mm 1.0 mm1208-3-1.0Three sets minimum because props are consumables | 3 | $3 | $9 | 0.84 g | 2026-08-10 | manufacturer or named retailer | 31 mm tri-blade matching motor shaft |
| Build 1 — Whoop | Analog | Buzzer | Betaflight FC beeper piezoANALOG-BUZZERIndoor lost-model recovery | 1 | $3 | $3 | 0.5 g | 2026-08-11 | manufacturer or named retailer | Standalone finder if flying outdoors |
| Build 1 — Whoop | Analog | Hardware | maker Spare props and screws bundleANALOG-HWCrash consumables and bench stock only | 1 | $4 | $4 | — | 2026-08-11 | manufacturer or named retailer | Match frame and motor hardware |
| Build 2 — 5-inch HD | Shared | Frame | AOS RC AOS 5 V5AOS5V5True-X spine reference | 1 | $75 | $75 | 119 g | 2026-08-10 | RDQ — URL pending | Stretched X; replaceable arms |
| Build 2 — 5-inch HD | Shared | FC + 4-in-1 ESC | SpeedyBee F405 V5 OX32 55A StandardSB-F4V5-OX32-55-PRO-STACKCurrent 55 A 6S stack with 16 MB flash and included capacitor | 1 | $94 | $94 | 27.2 g | 2026-08-11 | RDQ — URL pending | F405/F722 stack; at least 45 A; 6S; current ESC firmware |
| Build 2 — 5-inch HD | Shared | Motors (×4) | EMAX ECO II 2306 1700 KVECO223061700Replace the planning allowance with measured motor and lead mass | 4 | $13 | $52 | 149 g | 2026-08-11 | EMAX USA direct | 2306 1700 KV 6S from a named manufacturer |
| Build 2 — 5-inch HD | Shared | Props | DAL 5×4.3×3 tri-bladeDAL-5043-3Four fly and the remaining sets are crash spares | 3 | $4 | $12 | 20 g | 2026-05-11 | RDQ — URL pending | 5×4.3×3 tri-blade from a named maker |
| Build 2 — 5-inch HD | Shared | HD VTX + cam | DJI O4 Air Unit ProDJI-O4-PROPublished system mass includes camera and two antennas | 1 | $260 | $260 | 36.2 g | 2026-08-10 | RDQ — URL pending | DJI O3 or current Walksnail/HDZero equivalent |
| Build 2 — 5-inch HD | Shared | Receiver | RadioMaster RP4TD ELRS 2.4 GHzRM-RP4TDSystem mass includes receiver and both antennas; add measured wire | 1 | $30 | $30 | 4.92 g | 2026-08-11 | RDQ — URL pending | Diversity dual-antenna ELRS receiver |
| Build 2 — 5-inch HD | Shared | Battery | Tattu R-Line V5 1400 mAh 6STATTU-RL-1400-6SFour are purchased for a session and one flies | 4 | $50 | $200 | 222 g | 2026-08-10 | RDQ — URL pending | 6S 1300-1500 mAh from a named brand |
| Build 2 — 5-inch HD | Shared | Buzzer / finder | VIFLY Finder 2VIFLY-F2Crash recovery | 1 | $15 | $15 | 5 g | 2026-05-11 | RDQ — URL pending | Self-powered beeper with internal cell |
| Build 2 — 5-inch HD | Shared | Base TPU kit | frame maker FPV-camera wedge + antenna mountsframe-tpuBase TPU only; payload mount is counted with the payload | 1 | $12 | $12 | 10 g | 2026-08-11 | RDQ — URL pending | Frame-specific TPU excluding the action-camera mount |
| Build 2 — 5-inch HD | Shared | Antennas | DJI / RadioMaster O4 + RP4TD system-matched crash sparesSPARE-ANT-KITBench spares only; installed antennas are counted in their system rows | 1 | $30 | $30 | — | 2026-08-11 | RDQ — URL pending | Match the installed O4 and RP4TD antenna specifications |
| Build 2 — 5-inch HD | Shared | Capacitor | SpeedyBee 1000 µF solid capacitorSB-V5-INCLUDED-CAPIncluded in the V5 stack package but weighed as a carried item | 0 | $0 | $0 | 3 g | 2026-08-11 | RDQ — URL pending | 1000 µF capacitor supplied with the selected stack |
| Build 2 — 5-inch HD | Shared | Hardware / wire | maker M3 kit + 18 AWG siliconeM3-KITExplicit carried planning allowance; replace with measured installed mass | 1 | $15 | $15 | 30 g | 2026-08-11 | RDQ — URL pending | Standoffs + strap + heat shrink |
| Build 2 — 5-inch HD | Shared | Spare arm + motor | frame/motor maker Match frame and motorSPARE-AMField-repair stock and not carried | 1 | $50 | $50 | — | 2026-05-11 | RDQ — URL pending | One spare arm + one spare motor |
| Build 2 — Toothpick | Both | Frame | Flywoo Explorer LR 4 V2 frame kitFW-EXP-LR4Do not count included kit parts twice | 1 | $35 | $35 | 52 g | 2026-08-11 | RDQ — URL pending | 4-inch frame kit including TPU straps pads dampers and hardware |
| Build 2 — Toothpick | Both | FC + 4-in-1 ESC | SpeedyBee F405 Mini BLS 35A 20x20 stackSPEEDYBEEF405MINIShared stack for both toothpick variants | 1 | $65 | $65 | 13 g | 2026-08-11 | RDQ — URL pending | 20x20 two-board stack matching the frame FC bay |
| Build 2 — Toothpick | Both | HD VTX kit | Walksnail Avatar HD Mini 1S KitWS-AVATAR-MINISystem mass includes camera and antenna | 1 | $150 | $150 | 12.3 g | 2026-05-11 | RDQ — URL pending | Walksnail Avatar Mini 1S or current whoop-class HD kit |
| Build 2 — Toothpick | Both | Camera adapter | custom / third-party 14-to-20 mm TPU camera adaptertp-camera-adapterDry-fit and reject if measured installed mass exceeds 3 g | 1 | $10 | $10 | 3 g | 2026-08-11 | RDQ — URL pending | Name an exact part or immutable STL before checkout |
| Build 2 — Toothpick | Both | Receiver | RadioMaster RP1 ELRS 2.4 GHzRM-RP1Published mass includes the antenna | 1 | $15 | $15 | 2.2 g | 2026-08-10 | RDQ — URL pending | Lightweight ELRS receiver with T antenna |
| Build 2 — Toothpick | Both | Buzzer / finder | VIFLY Finder 2VIFLY-F2Crash recovery | 1 | $15 | $15 | 5 g | 2026-05-11 | RDQ — URL pending | Required self-powered finder |
| Build 2 — Toothpick | Both | TPU / frame hardware | Flywoo Included in Explorer LR 4 V2 frame kittp-tpuIncluded parts are inventoried but not counted twice | 0 | $0 | $0 | — | 2026-08-11 | RDQ — URL pending | Already inside the frame-kit mass |
| Build 2 — Toothpick | Both | Antennas | Walksnail / RadioMaster Included VTX + ELRS antennastp-antIncluded antennas are inventoried but not counted twice | 0 | $0 | $0 | — | 2026-08-11 | RDQ — URL pending | Already inside Avatar kit and RP1 weights |
| Build 2 — Toothpick | Both | Electronics wire / connector allowance | maker 22-24 AWG silicone + XT30 pigtailM2-KITCount omitted wiring once | 1 | $8 | $8 | 10 g | 2026-08-11 | RDQ — URL pending | Replace allowance with installed measured mass |
| Build 2 — Toothpick | Light | Motors (×4) | EMAX ECO Micro 1404 3700 KVEMAX-ECO2-1404Light-variant toothpick stator class | 1 | $32 | $32 | 34.4 g | 2026-08-11 | RDQ — URL pending | 1404 3700 KV class for selected 3S path |
| Build 2 — Toothpick | Light | Props | maker 3.5-4 inch toothpick tri-bladetp-prop-35Four fly and the remainder are crash spares | 1 | $12 | $12 | 6 g | 2026-08-11 | RDQ — URL pending | Match motor class and buy at least twelve |
| Build 2 — Toothpick | Light | Battery | Tattu 3S 450 mAh XT30TATTU-3S-450Three are purchased for a session and one flies | 3 | $13 | $40 | 48 g | 2026-08-11 | RDQ — URL pending | Weigh exact flight pack before payload planning |
| Build 2 — Toothpick | Performance | Motors (×4) | maker 1507 3600-4000 KVtp-1507-perfPerformance-variant stator class | 1 | $55 | $55 | 56 g | 2026-05-11 | RDQ — URL pending | 1507 3600-4000 KV class for 4S |
| Build 2 — Toothpick | Performance | Props | maker 4×2.5×3 tri-bladetp-prop-4x25Four fly and the remainder are crash spares | 1 | $12 | $12 | 6 g | 2026-05-11 | RDQ — URL pending | Match motor class and buy at least twelve |
| Build 2 — Toothpick | Performance | Battery | maker 4S 650 mAh 90C+ XT30tp-4s-650Three are purchased for a session and one flies | 3 | $18 | $55 | 75 g | 2026-05-11 | RDQ — URL pending | 4S 550-650 mAh 90C+ from a named brand |
| Parts subtotal | ||||||||||
“In flight” is not “what you buy.” A spare canopy has a cart quantity and no flight mass, because it lives in your toolbox until you break the one on the quad. The flight column is what the AUW calculator plans against.
Subtotal, not delivered price. The figure above is the sum of the currently selected parts, generated from the dated BOM. Shipping and tax land on top and vary by region and retailer. Budget that gap before ordering; do not turn a parts subtotal into a promise about the checkout total.