Item,Description,Specification,Quantity,Unit Cost,Total Cost,Source Notes
E1,Power Supply,Mean Well IRM-240-24 / Hi-Link HLK-240M24 (24V 10A 240W),1,$50.00,$50.00,Digi-Key / Amazon
E2,12 AWG Silicone Wire,Red + Black 600V rated 5m spool,1,$15.00,$15.00,McMaster-Carr / AliExpress
E3,PG7 Cable Gland,M20 IP67 5-8mm cable,2,$3.00,$6.00,AliExpress / Heilind
E4,Varistor (MOV),18-28V 1kA,1,$1.00,$1.00,Digi-Key
E5,Fuse 25A,T25 Slow-blow 5x20mm,1,$0.50,$0.50,Digi-Key
E6,Fuse Holder,5x20mm inline 20A rated,1,$2.00,$2.00,Amazon
E7,Crimp Ring Terminals,M3 12 AWG tin-plated,8,$0.20,$1.60,Heilind / AliExpress
E8,Strain Relief Sleeve,5mm ID silicone 1m,1,$5.00,$5.00,McMaster-Carr
C1,Pogo Pin Assembly,"Spring-loaded Ø5.5mm 20mm 20A 4mm travel",2,$10.00,$20.00,Preci-Dip / Jst / AliExpress
C2,Brass Contact Pad,Ø12x2mm H68 brass bare,2,$3.00,$6.00,OnlineMetals / Metals USA
C3,Solder Lug M3,Copper ring tin-plated,4,$0.40,$1.60,Heilind / Amazon
L1,5mm LED Red,2.0V 20mA diffuse,1,$0.30,$0.30,Digi-Key
L2,5mm LED Yellow,2.1V 20mA diffuse,1,$0.30,$0.30,Digi-Key
L3,5mm LED Blue,3.2V 20mA diffuse,1,$0.50,$0.50,Digi-Key
L4,5mm LED Green,2.1V 20mA diffuse,1,$0.30,$0.30,Digi-Key
R1-R4,Resistor 1kΩ 1/4W,Metal film 1% tolerance,4,$0.10,$0.40,Digi-Key
J1,Pin Header 2.54mm,1x6 right-angle,1,$0.50,$0.50,Digi-Key
S1,INA219 I2C Shunt Monitor,16-bit I2C 0x40 26V max (Optional),1,$5.00,$5.00,Adafruit / Digi-Key
S2,SMD Resistor 0.1Ω,1206 1W (Optional current sense),1,$1.00,$1.00,Digi-Key
M1,M20 Hex Nut,Steel DIN 934 ~86g,8,$0.80,$6.40,Grainger / Home Depot
M2,M4x16 SHCS,Stainless A4 DIN 912,16,$0.30,$4.80,Grainger
M3,M4x10 BHCS,Stainless A4 DIN 7380,8,$0.25,$2.00,Grainger
M4,M4 Heat-Set Insert,Brass threaded,20,$0.15,$3.00,McMaster-Carr
M5,M3x16 SHCS,Stainless,4,$0.20,$0.80,Grainger
M6,M3 Hex Nut,DIN 934,4,$0.10,$0.40,Grainger
M7,M8x40 BHCS,Zinc-plated floor anchor,4,$0.50,$2.00,Grainger
M8,Rubber Foot,Ø20x5mm self-adhesive,4,$0.80,$3.20,Amazon
A1,ArUco Marker Print,"100x100mm ID=42 DICT_4X4_250 glossy photo (qty 2)",2,$1.50,$3.00,Print locally / AliExpress
A2,Lamination Pouch,A4 80µm,2,$0.40,$0.80,Amazon / Staples
A3,Acrylic Cover Sheet,Clear 3mm 150x150mm,1,$3.00,$3.00,McMaster-Carr
X1,Solder Wire,63/37 Sn/Pb lead-free 1m,1,$3.00,$3.00,Digi-Key
X2,Flux Paste,No-clean 25mL,1,$4.00,$4.00,Digi-Key
X3,Loctite 243,Thread-locker 10mL,1,$4.00,$4.00,Grainger
X4,Epoxy Adhesive,Two-part 25mL,1,$6.00,$6.00,Home Depot
P1,PETG Filament (3D Print),"Natural/White 1kg ±15% waste factor",2.5,$20.00,$50.00,Prusament / Overture
,,,,,
SUBTOTAL (Electrical + Hardware + Consumables),,,,,,$234.00,excludes 3D printing
SUBTOTAL (With 3D filament @ $20/kg),,,,,,$284.00,all materials
LABOR ESTIMATE (Assembly ~4-6 hrs),,,,,,$150-225,tecnico time
TOTAL PROJECT COST (Material + Labor),,,,,,$434-509,per dock