Build guide

Dome Light Fade

15×27 @ 2.54mm pitch · 10 components · 8 wires

1. Prepare

Verify component pinouts against each manufacturer’s datasheet before wiring. Label cut wires with their wire numbers; the same numbers follow them through every stage. Wire colors are written out for black-and-white printing. Custom colors can be named in the wire library.

Progress is saved on this browser for this board revision. Changes to the board or measurements start a new checklist. Printed diagrams are references, not life-size templates.

8 wires to prepare; 215mm total wire, including end allowances.

Parts List

8 unique parts

Ref DesPartValueManufacturerPart NumberQtyLink
C1Electrolytic Cap100uF——1Amazon
J1Power Input (2-pin)——1—
LED1, LED2, LED3LED——3Amazon
Q1N-ch MOSFET (TO-92)——1Amazon
R1Resistor (axial)1k——1Amazon
R2Resistor (axial)100k——1Amazon
R3Resistor (axial)220——1Amazon
U1Tactile Button 6mm——1—

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2. Cut wires

Cutting quantities by color and length

8 wires · +5mm per end for lead-through

Cut#NetColorRouteCut LengthBends
6GNDBlackL14 → L533mm—
5GNDBlueG17 → J1425mm13mm (90°)
4GNDGreenH19 → H1618mm—
1LED_ARedD25 → F2418mm10mm (90°)
712VRedE6 → K528mm20mm (90°)
3LED_RWhiteL20 → L2523mm—
2LED_BYellowH25 → J2418mm10mm (90°)
812VYellowD7 → D2453mm—

Total wire: 215mm (8.4in)

3. Bend wires

Use the straight-line ruler to mark bend points on the wire before bending. Use the bent shape as a visual reference while bending.

Bend ruler and shape for wire 1
Cut 18mm. Bend 90° up at 10mm.
Bend ruler and shape for wire 2
Cut 18mm. Bend 90° up at 10mm.
Bend ruler and shape for wire 3
Cut 23mm.
Bend ruler and shape for wire 4
Cut 18mm.
Bend ruler and shape for wire 5
Cut 25mm. Bend 90° up at 13mm.
Bend ruler and shape for wire 6
Cut 33mm.
Bend ruler and shape for wire 7
Cut 28mm. Bend 90° up at 20mm.
Bend ruler and shape for wire 8
Cut 53mm.

4. Place wires

Component side. Select a wire to emphasize its route in its own color and highlight its endpoints. Wires follow number order, matching the bend guide and solder checklist.

W1 · D25F24
W2 · H25J24
W3 · L20L25
W4 · H19H16
W5 · G17J14
W6 · L14L5
W7 · E6K5
W8 · D7D24
W1 · D25F24W2 · H25J24W3 · L20L25W4 · H19H16W5 · G17J14W6 · L14L5W7 · E6K5W8 · D7D24

5. Solder connections

Bottom view: horizontally mirrored. Coordinate names still identify the same physical holes. Highlights mark wire endpoints; wire routes belong on the component side. Check each connection and the listed solder bridges.

Board is horizontally mirrored. Column A is on the right.

W1 · D25F24
W2 · H25J24
W3 · L20L25
W4 · H19H16
W5 · G17J14
W6 · L14L5
W7 · E6K5
W8 · D7D24
W1 · D25F24W2 · H25J24W3 · L20L25W4 · H19H16W5 · G17J14W6 · L14L5W7 · E6K5W8 · D7D24