ESP32 3V3 Supply

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.

12 wires to prepare; 305mm total wire, including end allowances.

Parts List

7 unique parts

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2. Cut wires

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

Total wire: 305mm (12.0in)

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 — 5V — D3 → J3 — 25mm — Red

Cut 25mm.

Wire 2 — 5V — C4 → C12 — 30mm — Yellow

Cut 30mm.

Wire 3 — 3V3 — C16 → C11 — 23mm — White

Cut 23mm.

Wire 4 — 3V3 — E16 → H16 — 18mm — Green

Cut 18mm.

Wire 5 — 3V3 — J16 → L16 — 15mm — Blue

Cut 15mm.

Wire 6 — 3V3 — I15 → H25 — 38mm — Black

Cut 38mm. Bend 90° down at 8mm.

Wire 7 — GND — E5 → I5 — 20mm — Red

Cut 20mm.

Wire 8 — GND — F4 → D9 — 28mm — Yellow

Cut 28mm. Bend 90° left at 18mm.

Wire 9 — GND — E10 → H17 — 35mm — White

Cut 35mm. Bend 90° right at 23mm.

Wire 10 — GND — J17 → L17 — 15mm — Green

Cut 15mm.

Wire 11 — GND — I18 → J24 — 28mm — Blue

Cut 28mm. Bend 90° right at 20mm.

Wire 12 — GND — J26 → D24 — 30mm — Black

Cut 30mm. Bend 90° up at 20mm.

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.