Bill of Materials (BOM)

BOM Tables

Component

Number

Cost per unit (EUR)

Total cost (EUR)

Source of materials

Material

Hardware Controller PCB

1

3.8

3.8

JLCPCB

FR4

Arduino Nano, rev3 (A000005) - development board

1

19.18

19.18

RS Components

Single-row female header, 36-pin, 2.54mm pitch

2

1.1

2.2

RS Components

CL13845G - 3.5mm jack, mono, female, w/nut

5

2.61

13.04

RS Components

3.5mm jack, mono, male

5

2.77

13.85

RS Components

5.5x2.1mm DC barrel jack, panel mount

1

1.16

1.16

Conrad

12V DC power supply, 5A (60W)

1

29.99

29.99

Conrad

FQP30N06L - N-channel MOSFET, TO220 package

5

0.82

4.1

RS Components

1N4004 - rectifier diode, axial package

5

0.14

0.7

RS Components

10kOhm resistor, 1/4W, axial package

5

0.13

0.65

RS Components

100uF electrolytic capacitor, 35V, 2.5mm leg pitch, radial package

1

0.08

0.08

Conrad

Screw, M3x8mm, DIN912

10

0.03

3.49 [1]

Conrad

Stainless steel

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BOM Notes

Required Tools

  • FDM 3D printer

  • Small drill press, hand drill, or rotary tool (e.g. Dremel)

  • Cyanoacrylate (super) glue

  • Soldering iron

  • Flux-core solder

  • Side cutters or similar (e.g. Knipex 78 61 125)

  • 2.5 mm hex wrench

Optional Tools/Components

  • Isopropanol – for cleaning residual flux from PCB

  • Heat-shrink tubing – for DC input jack wire joint protection

  • Self-adhesive silicone feet - for hardware controller and valve stand