bom.csv

item,qty,spec,supplier,unit_cost_usd,make_buy,notes
1 Enclosure body with membrane vent and lugs,1,"Light grey polycarbonate, 150 x 90 x 200 mm outside (W x D x H), IP65 or better, UV stabilized; four moulded bosses on the inside of the back wall for a mounting plate; the maker's kit of four external wall-mounting lugs; M12 ePTFE pressure-equalizing vent on the bottom face","Electrical enclosure maker (for example Fibox, Hammond or Bud class) via an electronics or electrical distributor; vent from an industrial vent maker",20.00,buy,Indicative price including vent and lug kit; size per cad/src/model.py; bottom face drilled for 6 penetrations in two rows (FND-DDR-003)
2 Enclosure lid with gasket,1,Gasketed lid with captive stainless screws,Supplied with item 1,0.00,buy,Included in item 1
3 Cable glands,2,"M16 x 1.5 nylon gland, IP68, 4 to 8 mm cable; one for the panel lead, one for a fixed-cable sensor (blanking plug in item 13 when unused)",Electrical distributor,1.50,buy,Indicative price; TRL 2 had one gland blanked but the panel lead needs its own (FND-CAL-001)
4 Solar panel,1,"6 W monocrystalline, 9 V class (Vmp about 9 V at 25 C), about 290 x 200 x 17 mm, with 1 m lead",Solar or electronics distributor,14.00,buy,Indicative price; 9 V class per FND-DDR-002 (keeps about 7.4 V when hot); charger minimum input to confirm at TRL 4
5 Panel tilt bracket,1,"Two sides, each: one plate clip (aluminium angle 30 x 30 x 3 mm, 77 mm long), one post (flat bar 20 x 3 mm, 181 mm), one strut (flat bar 20 x 3 mm, 149 mm) and two panel clips (angle 30 x 30 x 3 mm, 30 mm long) on the panel frame's back lip; M6 bolts at the post foot (2), post head, strut foot and strut head; tilt set by hole position",Local make from metal stockist bar,9.00,make,Indicative material cost; 6063 class aluminium; redesigned for construction (FND-DDR-003)
6 LiFePO4 cell with fused holder,1,"32700 LiFePO4, 3.2 V, 6 Ah (about 19 Wh), charge 0 to 45 C; holder with inline 5 A fuse, 10 k NTC and plug-in lead",Battery distributor (cell from a maker that publishes a datasheet),9.00,buy,Indicative price
7 Power board,1,"1S LiFePO4 MPPT-style charger (bq24650 or LT3652 class) set to 3.6 V with NTC lockout; protection IC; fuel gauge; switched 3.3 V, 5 V and 12 V rails; serial programming header (1 x 6 straight pins at 2.54 mm: ground, 3.3 V, TX, RX, boot, reset) on the front face, wired to the controller and facing the lid so a 3.3 V USB-to-serial cable plugs in with the lid open",Custom carrier; ICs and header from an electronics distributor (DigiKey or Mouser class),22.50,make,"Indicative prototype cost: USD 22.00 carrier as before plus USD 0.50 for the pin header (distributor price class at quantity 1); header added by FND-DEC-001 (2026-10-02, firmware update by cable); board design is TRL 4 work and not started"
8 Controller and LoRa module,1,STM32WL-class LoRaWAN module (RAK3172 or Wio-E5) on a carrier with 16 MB SPI flash and status LED,RAKwireless or Seeed Studio via their stores or an electronics distributor,14.00,buy,Indicative price including carrier
9 Antenna,1,"915 MHz whip for the US915 first variant, about 2 dBi, about 190 mm, with bulkhead and pigtail",Electronics distributor,10.00,buy,Indicative price (unchanged); US915 default first variant (FND-DEC-001; DDR-001 O1); a whip for EU868 or another band replaces it only if the first adopting site is outside North America
10 Sensor ports,2,"M12 5-pin A-coded panel-mount socket, IP67, with sealing cap",Industrial connector distributor,6.00,buy,Indicative price; wired to the proposed standard pinout (FND-DEC-001; DDR-001 O2)
11 Internal mounting plate,1,"3 mm printed ASA plate, 130 x 180 mm, lifts out with cell and boards",Local make (3D printed),4.00,make,Indicative material and print cost; ASA chosen over aluminium for mass (FND-CAL-001 section F)
12 Pole mounting kit,1,"Aluminium back plate 180 x 320 x 3 mm with a 100 x 150 mm window behind the enclosure, band slots and fixing holes; two aluminium V-blocks 60 x 33 x 20 mm with a 90 deg V, each on two M4 countersunk screws; two 12 mm stainless worm-drive band clamps for 40 to 60 mm poles (about 230 to 280 mm band); wall screws and plugs",Hardware shop plus local make,8.00,make,Indicative price; V-blocks cut from 60 x 40 mm aluminium flat bar (FND-DDR-003)
13 Hardware and consumables,1,"Stainless fixings: 10 x M6 x 16 hex bolts with nyloc nuts (bracket), 8 x M5 x 12 button-head screws with nyloc nuts (lugs and plate clips), 8 x M4 x 12 pan-head screws with nuts (panel clips), 4 x M4 x 12 countersunk screws (V-blocks), 4 x M4 x 10 screws (internal plate); nylon standoffs, hook-up wire, ferrules, M16 blanking plug, desiccant pack, cable ties",Hardware shop,9.00,buy,Indicative price; no exploded-view callout
14 Sun shield (hot-climate option),0,"White powder-coated aluminium sheet 0.5 mm, one folded blank: front, two sides and top standing 15 mm off the enclosure, open bottom, 30 mm vent slot at the back of the top, 12 mm fixing flanges folded in at the back of each side; four M4 knurled thumb screws into tapped holes in the back plate, so it lifts off without tools",Local make from sheet stockist,9.00,make,"Option, qty 0 in the base node; fit 1 where the site design maximum exceeds 30 C (FND-DDR-002, FND-CAL-001 section C); hot-climate node $148.50"
15 Plug-in connectors and rail fuses,1,"Pluggable terminal block strip (5.08 mm pitch, plug and header, about 12 ways) at the lower edge of the internal plate for the panel lead, both sensor ports and the fixed-cable gland, so the plate lifts out as one unit; two resettable fuses (PTC, about 0.5 A hold), one on each switched sensor rail",Electronics distributor,5.00,buy,Indicative price; added for construction (FND-DDR-003)