Roulette Wheel

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.

40 wires to prepare; 1406mm total wire, including end allowances.

Parts List

11 unique parts

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2. Cut wires

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

Total wire: 1406mm (55.3in)

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.

Wire 1 — Q7 — M18 → M27 — 33mm — Red

Cut 33mm.

Wire 2 — Q4 — O8 → N31 — 81mm — Yellow

Cut 81mm. Bend 90° down at 10mm. Bend 90° left at 69mm.

Wire 3 — CLOCK — G34 → J31 — 21mm — White

Cut 21mm.

Wire 4 — SPIN — R36 → R33 — 18mm — Green

Cut 18mm.

Wire 5 — SPIN — P33 → K33 — 23mm — Blue

Cut 23mm.

Wire 6 — TIMING — N38 → N36 — 15mm — Black

Cut 15mm.

Wire 7 — TIMING — M39 → G38 — 28mm — Red

Cut 28mm. Bend 90° up at 20mm.

Wire 8 — TIMING — M37 → F34 — 31mm — Yellow

Cut 31mm. Bend 45° left at 16mm.

Wire 9 — DISCH — J38 → F38 — 20mm — White

Cut 20mm.

Wire 10 — DISCH — L38 → M33 — 25mm — Green

Cut 25mm. Bend 90° right at 18mm.

Wire 11 — BUTTON — P40 → R32 — 35mm — Blue

Cut 35mm. Bend 90° right at 25mm.

Wire 12 — Q8 — L19 → P30 — 42mm — Black

Cut 42mm. Bend 45° down at 19mm.

Wire 13 — Q0 — G15 → J27 — 48mm — Red

Cut 48mm. Bend 90° right at 35mm.

Wire 14 — Q6 — O15 → L27 — 48mm — Yellow

Cut 48mm. Bend 90° left at 35mm.

Wire 15 — Q1 — G11 → I27 — 56mm — White

Cut 56mm. Bend 90° down at 10mm.

Wire 16 — Q9 — G18 → M31 — 58mm — Green

Cut 58mm. Bend 90° right at 38mm.

Wire 17 — Q2 — I8 → K27 — 60mm — Blue

Cut 60mm. Bend 45° down-right at 48mm.

Wire 18 — Q3 — L7 → N27 — 63mm — Black

Cut 63mm. Bend 45° down-right at 51mm.

Wire 19 — Q5 — Q11 → H27 — 74mm — Red

Cut 74mm. Bend 90° left at 46mm.

Wire 20 — CATHODES — Q18 → Q16 — 15mm — Yellow

Cut 15mm.

Wire 21 — CATHODES — O16 → O12 — 20mm — White

Cut 20mm.

Wire 22 — CATHODES — S18 → O19 — 23mm — Green

Cut 23mm. Bend 90° left at 8mm.

Wire 23 — CATHODES — N20 → L20 — 15mm — Blue

Cut 15mm.

Wire 24 — CATHODES — J20 → H20 — 15mm — Black

Cut 15mm.

Wire 25 — CATHODES — P13 → N10 — 23mm — Red

Cut 23mm. Bend 90° up at 10mm.

Wire 26 — CATHODES — M9 → K9 — 15mm — Yellow

Cut 15mm.

Wire 27 — CATHODES — J8 → I9 — 14mm — White

Cut 14mm.

Wire 28 — CATHODES — G19 → G16 — 18mm — Green

Cut 18mm.

Wire 29 — CATHODES — E16 → E12 — 20mm — Blue

Cut 20mm.

Wire 30 — 9V — C5 → G30 — 84mm — Black

Cut 84mm. Bend 90° right at 69mm.

Wire 31 — 9V — H31 → H34 — 18mm — Red

Cut 18mm.

Wire 32 — 9V — I35 → E38 — 28mm — Yellow

Cut 28mm. Bend 90° left at 13mm.

Wire 33 — 9V — D37 → O39 — 43mm — White

Cut 43mm. Bend 90° right at 10mm.

Wire 34 — GND — Q22 → P28 — 28mm — Green

Cut 28mm. Bend 90° left at 20mm.

Wire 35 — GND — P29 → K31 — 28mm — Blue

Cut 28mm. Bend 90° left at 10mm.

Wire 36 — GND — R23 → R34 — 38mm — Black

Cut 38mm.

Wire 37 — GND — P34 → P37 — 18mm — Red

Cut 18mm.

Wire 38 — GND — Q35 → I31 — 35mm — Yellow

Cut 35mm. Bend 45° up-left at 15mm.

Wire 39 — GND — N37 → E34 — 40mm — White

Cut 40mm. Bend 90° up at 18mm. Bend 90° left at 25mm.

Wire 40 — GND — S22 → D5 — 91mm — Green

Cut 91mm. Bend 90° left at 48mm.

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.

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.