2 layers120 × 170 mm
2 layers99.5 × 85 mm
Whistle synth
jeffkaufman/emh-pcb- Size
- 99.5 × 85 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 138
- Nets
- 16
- Pads
- 342
- Tracks, vias
- 366, 0
- Routed
- Yes
- KiCad
- KiCad 8.0 (file 20240108)
- Created
- 1 Apr 2024
- Updated
- 8 Feb 2026
Overview
Whistle synth is an open-source printed circuit board by jeffkaufman, from the jeffkaufman/emh-pcb repository on GitHub. It is a 2-layer board of 99.5 × 85 mm with 138 parts on 16 nets, routed with 366 tracks and 0 vias.
It is built around the LM358P. Its parts include 42 resistors, 24 capacitors, 12 diodes and 6 ICs. It belongs with the audio and music boards of this library.
Main components
1Parts
138| Qty | Value | Footprint | References |
|---|---|---|---|
| 18 | 10k | Resistor_THT:R_Axial_DIN0309_L9.0mm_D3.2mm_P12.70mm_Horizontal | R3, R3, R3, R3, R3, R3, R5, R5, R5, R5, R5, R5, R6, R6, R6, R6 +2 |
| 18 | 10uF | Capacitor_THT:CP_Radial_D4.0mm_P2.00mm | C1, C1, C1, C1, C1, C1, C2, C2, C2, C2, C2, C2, C4, C4, C4, C4 +2 |
| 18 | 33R | Resistor_THT:R_Axial_DIN0309_L9.0mm_D3.2mm_P12.70mm_Horizontal | R1, R1, R1, R1, R1, R1, R2, R2, R2, R2, R2, R2, R7, R7, R7, R7 +2 |
| 12 | 1N5818 | Diode_THT:D_DO-41_SOD81_P10.16mm_Horizontal | D1, D1, D1, D1, D1, D1, D2, D2, D2, D2, D2, D2 |
| 6 | 3.3v | MountingHole:MountingHole_2.2mm_M2_DIN965_Pad_TopBottom | H7, H7, H7, H7, H7, H7 |
| 6 | 4.7uF | Capacitor_THT:CP_Radial_D4.0mm_P2.00mm | C3, C3, C3, C3, C3, C3 |
| 6 | 5v | MountingHole:MountingHole_2.2mm_M2_DIN965_Pad_TopBottom | H6, H6, H6, H6, H6, H6 |
| 6 | 7.5R | Resistor_THT:R_Axial_DIN0309_L9.0mm_D3.2mm_P12.70mm_Horizontal | R4, R4, R4, R4, R4, R4 |
| 6 | LM358P | Package_DIP:DIP-8_W7.62mm | U1, U1, U1, U1, U1, U1 |
| 6 | Vo | MountingHole:MountingHole_2.2mm_M2_DIN965_Pad_TopBottom | H4, H4, H4, H4, H4, H4 |
| 6 | gnd | MountingHole:MountingHole_2.2mm_M2_DIN965_Pad_TopBottom | H5, H5, H5, H5, H5, H5 |
| 6 | xlr2 | MountingHole:MountingHole_2.2mm_M2_DIN965_Pad_TopBottom | H2, H2, H2, H2, H2, H2 |
| 6 | xlr3 | MountingHole:MountingHole_2.2mm_M2_DIN965_Pad_TopBottom | H1, H1, H1, H1, H1, H1 |
| 6 | xlrG | MountingHole:MountingHole_2.2mm_M2_DIN965_Pad_TopBottom | H3, H3, H3, H3, H3, H3 |
The 126 most common of 138 parts.
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Questions
How big is the Whistle synth PCB?
It measures 99.5 × 85 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Whistle synth use?
138 parts, built around the LM358P. The full list of its parts is on this page, with links to each part's symbol and footprint where PCBKit's library has them.
Where can I download the Whistle synth KiCad files?
From the jeffkaufman/emh-pcb repository on GitHub, at the commit this page was made from: the board is whistle-synth-v1/whistle-synth.kicad_pcb and its schematic eighteen-input/emandoharp.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Whistle synth design in my own project?
Its repository states no licence, so its author keeps all rights: ask jeffkaufman before reusing the design.