4 layers130 × 75 mm
2 layers
Mic array
scarbajali/mic_array_243PCB of a 24-MEMS microphones array
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 79
- Nets
- 83
- Pads
- 862
- Tracks, vias
- 35,283, 104
- Pours
- 2
- Routed
- Yes
- KiCad
- KiCad 5 (file 20171130)
- Created
- 11 Jul 2021
- Updated
- 12 Jul 2021
Overview
Mic array is an open-source printed circuit board by scarbajali, from the scarbajali/mic_array_24 repository on GitHub, published under the GPL-3.0 licence. It is a 2-layer board with 79 parts on 83 nets, routed with 35,283 tracks and 104 vias.
It is built around the 74LV244D. Its parts include 34 capacitors, 28 ICs, 2 switches and 1 connector. It belongs with the audio and music boards of this library.
Main components
1README
README.mdmic_array_24
PCB of a 24-MEMS microphones array
Software: Kicad
3D Preview:
Parts
79| Qty | Value | Footprint | References |
|---|---|---|---|
| 28 | 0.1u | Capacitor_SMD:C_0603_1608Metric_Pad1.05x0.95mm_HandSolder | C10, C11, C12, C13, C14, C15, C16, C17, C18, C19, C20, C21, C22, C23, C24, C25 +12 |
| 28 | MIC | pdm-mics:MIC_WM7216 | U1, U2, U10, U11, U12, U13, U14, U15, U16, U17, U18, U19, U20, U21, U22, U23 +12 |
| 14 | Tie | bridges:bridge_1x2_0.12mm | NT1, NT2, NT3, NT4, NT5, NT6, NT7, NT8, NT9, NT10, NT11, NT12, NT13, NT14 |
| 4 | 100u | Capacitor_SMD:CP_Elec_3x5.3 | C3, C4, C5, C6 |
| 2 | 100n | Capacitor_SMD:C_0603_1608Metric_Pad1.05x0.95mm_HandSolder | C1, C2 |
| 2 | 74LV244 | Package_SO:SSOP-20_4.4x6.5mm_P0.65mm | K1, K2 |
| 1 | CON40A | Connector_PinSocket_2.54mm:PinSocket_2x20_P2.54mm_Vertical | J1 |
Questions
What parts does the Mic array use?
79 parts, built around the 74LV244D. 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 Mic array KiCad files?
From the scarbajali/mic_array_24 repository on GitHub, at the commit this page was made from: the board is mic-array.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.
Can I use the Mic array design in my own project?
Its repository publishes it under the GPL-3.0 licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).
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