Discrete H Bridge

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.

16 wires to prepare; 358mm total wire, including end allowances.

Parts List

6 unique parts

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2. Cut wires

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

Total wire: 358mm (14.1in)

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 — IN1 — F23 → F19 — 20mm — Red

Cut 20mm.

Wire 2 — IN2 — J23 → J19 — 20mm — Yellow

Cut 20mm.

Wire 3 — VPLUS — G10 → E10 — 15mm — White

Cut 15mm.

Wire 4 — VPLUS — I10 → K10 — 15mm — Green

Cut 15mm.

Wire 5 — OUTA — D7 → D13 — 25mm — Blue

Cut 25mm.

Wire 6 — OUTA — E14 → G14 — 15mm — Black

Cut 15mm.

Wire 7 — OUTA — F13 → F20 — 28mm — Red

Cut 28mm.

Wire 8 — OUTA — D20 → D22 — 15mm — Yellow

Cut 15mm.

Wire 9 — OUTA — F15 → J12 — 28mm — White

Cut 28mm. Bend 90° right at 13mm.

Wire 10 — OUTB — L7 → L13 — 25mm — Green

Cut 25mm.

Wire 11 — OUTB — K14 → I14 — 15mm — Blue

Cut 15mm.

Wire 12 — OUTB — J13 → D12 — 33mm — Black

Cut 33mm. Bend 90° left at 8mm. Bend 90° up at 23mm.

Wire 13 — OUTB — J15 → J20 — 23mm — Red

Cut 23mm.

Wire 14 — OUTB — L20 → L22 — 15mm — Yellow

Cut 15mm.

Wire 15 — GND — F18 → J18 — 20mm — White

Cut 20mm.

Wire 16 — GND — K17 → J4 — 46mm — Green

Cut 46mm. Bend 90° up at 8mm.

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.