Build guide

Clap Switch

16×27 @ 2.54mm pitch · 14 components · 24 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.

24 wires to prepare; 568mm total wire, including end allowances.

Parts List

13 unique parts

Ref DesPartValueManufacturerPart NumberQtyLink
C1Ceramic Cap100nF——1Amazon
C2Ceramic Cap470nF——1Amazon
J1Power Input (2-pin)——1—
LED1LEDred——1Amazon
Q1, Q2NPN Transistor (TO-92)——2Amazon
R1Resistor (axial)2.2k——1Amazon
R2Resistor (axial)470k——1Amazon
R3Resistor (axial)47k——1Amazon
R4Resistor (axial)1M——1Amazon
R5Resistor (axial)10k——1Amazon
R6Resistor (axial)220——1Amazon
U1Electret Microphone——1—
U2DIP-14——1—

Links may include affiliate referrals.

2. Cut wires

Cutting quantities by color and length

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

Cut#NetColorRouteCut LengthBends
6PULSEBlackD14 → F1518mm10mm (90°)
12VCCBlackG5 → C520mm—
18GNDBlackM11 → M1623mm—
24GNDBlackC22 → I2225mm—
5MICBlueK10 → K718mm—
17GNDBlueL7 → L1018mm—
11CLAPBlueM13 → G1330mm8mm (90°), 23mm (90°)
23GNDBlueD5 → D2151mm—
4MICGreenI9 → J913mm—
10CLAPGreenK13 → K1515mm—
16GNDGreenE4 → L530mm23mm (90°)
22GNDGreenM6 → H1546mm28mm (90°)
19GNDRedL15 → J1515mm—
1TOGGLERedK19 → H1918mm—
13VCCRedI5 → F821mm—
7PULSERedE16 → I1928mm13mm (90°)
3BASEWhiteK12 → J1213mm—
9CLAPWhiteM14 → L1413mm—
21GNDWhiteL19 → J1915mm—
15VCCWhiteF19 → M1928mm—
2BASEYellowM10 → M1215mm—
8TIMERYellowD18 → I1530mm13mm (90°)
14VCCYellowE9 → E1833mm—
20GNDYellowL9 → M1835mm8mm (90°)

Total wire: 568mm (22.4in)

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 ruler and shape for wire 2
Cut 15mm.
Bend ruler and shape for wire 3
Cut 13mm.
Bend ruler and shape for wire 4
Cut 13mm.
Bend ruler and shape for wire 5
Cut 18mm.
Bend ruler and shape for wire 6
Cut 18mm. Bend 90° down at 10mm.
Bend ruler and shape for wire 7
Cut 28mm. Bend 90° right at 13mm.
Bend ruler and shape for wire 8
Cut 30mm. Bend 90° right at 13mm.
Bend ruler and shape for wire 9
Cut 13mm.
Bend ruler and shape for wire 10
Cut 15mm.
Bend ruler and shape for wire 11
Cut 30mm. Bend 90° left at 8mm. Bend 90° up at 23mm.
Bend ruler and shape for wire 12
Cut 20mm.
Bend ruler and shape for wire 13
Cut 21mm.
Bend ruler and shape for wire 14
Cut 33mm.
Bend ruler and shape for wire 15
Cut 28mm.
Bend ruler and shape for wire 16
Cut 30mm. Bend 90° down at 23mm.
Bend ruler and shape for wire 17
Cut 18mm.
Bend ruler and shape for wire 18
Cut 23mm.
Bend ruler and shape for wire 19
Cut 15mm.
Bend ruler and shape for wire 20
Cut 35mm. Bend 90° down at 8mm.
Bend ruler and shape for wire 21
Cut 15mm.
Bend ruler and shape for wire 22
Cut 46mm. Bend 90° left at 28mm.
Bend ruler and shape for wire 23
Cut 51mm.
Bend ruler and shape for wire 24
Cut 25mm.

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 · K19H19
W2 · M10M12
W3 · K12J12
W4 · I9J9
W5 · K10K7
W6 · D14F15
W7 · E16I19
W8 · D18I15
W9 · M14L14
W10 · K13K15
W11 · M13G13
W12 · G5C5
W13 · I5F8
W14 · E9E18
W15 · F19M19
W16 · E4L5
W17 · L7L10
W18 · M11M16
W19 · L15J15
W20 · L9M18
W21 · L19J19
W22 · M6H15
W23 · D5D21
W24 · C22I22
W1 · K19H19W2 · M10M12W3 · K12J12W4 · I9J9W5 · K10K7W6 · D14F15W7 · E16I19W8 · D18I15W9 · M14L14W10 · K13K15W11 · M13G13W12 · G5C5W13 · I5F8W14 · E9E18W15 · F19M19W16 · E4L5W17 · L7L10W18 · M11M16W19 · L15J15W20 · L9M18W21 · L19J19W22 · M6H15W23 · D5D21W24 · C22I22

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 · K19H19
W2 · M10M12
W3 · K12J12
W4 · I9J9
W5 · K10K7
W6 · D14F15
W7 · E16I19
W8 · D18I15
W9 · M14L14
W10 · K13K15
W11 · M13G13
W12 · G5C5
W13 · I5F8
W14 · E9E18
W15 · F19M19
W16 · E4L5
W17 · L7L10
W18 · M11M16
W19 · L15J15
W20 · L9M18
W21 · L19J19
W22 · M6H15
W23 · D5D21
W24 · C22I22
W1 · K19H19W2 · M10M12W3 · K12J12W4 · I9J9W5 · K10K7W6 · D14F15W7 · E16I19W8 · D18I15W9 · M14L14W10 · K13K15W11 · M13G13W12 · G5C5W13 · I5F8W14 · E9E18W15 · F19M19W16 · E4L5W17 · L7L10W18 · M11M16W19 · L15J15W20 · L9M18W21 · L19J19W22 · M6H15W23 · D5D21W24 · C22I22