Build guide

5V Regulator (7805)

14×25 @ 2.54mm pitch · 10 components · 7 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.

7 wires to prepare; 156mm total wire, including end allowances.

Parts List

10 unique parts

Ref DesPartValueManufacturerPart NumberQtyLink
C1Electrolytic Cap100uF——1Amazon
C2Ceramic Cap0.33uF——1Amazon
C3Ceramic Cap0.1uF——1Amazon
C4Electrolytic Cap10uF——1Amazon
D1Diode (axial)——1—
J1Barrel Jack——1—
J2Screw Terminal 2P (5.08mm)——1—
LED1LED——1Amazon
Q1TO-220——1—
R1Resistor (axial)1k——1Amazon

Links may include affiliate referrals.

2. Cut wires

Cutting quantities by color and length

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

Cut#NetColorRouteCut LengthBends
6GNDBlackJ21 → F2120mm—
5GNDBlueI17 → I2018mm—
4GNDGreenG13 → F1620mm8mm (90°)
1LED_ARedF19 → I1918mm—
7GNDRedH12 → K535mm23mm (90°)
3VOUTWhiteE14 → D2130mm8mm (90°)
2VOUTYellowD15 → D1315mm—

Total wire: 156mm (6.2in)

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 ruler and shape for wire 2
Cut 15mm.
Bend ruler and shape for wire 3
Cut 30mm. Bend 90° down at 8mm.
Bend ruler and shape for wire 4
Cut 20mm. Bend 90° down at 8mm.
Bend ruler and shape for wire 5
Cut 18mm.
Bend ruler and shape for wire 6
Cut 20mm.
Bend ruler and shape for wire 7
Cut 35mm. Bend 90° right at 23mm.

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 · F19I19
W2 · D15D13
W3 · E14D21
W4 · G13F16
W5 · I17I20
W6 · J21F21
W7 · H12K5
W1 · F19I19W2 · D15D13W3 · E14D21W4 · G13F16W5 · I17I20W6 · J21F21W7 · H12K5

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 · F19I19
W2 · D15D13
W3 · E14D21
W4 · G13F16
W5 · I17I20
W6 · J21F21
W7 · H12K5
W1 · F19I19W2 · D15D13W3 · E14D21W4 · G13F16W5 · I17I20W6 · J21F21W7 · H12K5