6 layers94 × 78 mm
4 layers179.6 × 161 mm
- Size
- 179.6 × 161 mm
- Copper layers
- 4
- Thickness
- 1.6 mm
- Parts
- 266
- Nets
- 161
- Pads
- 1,109
- Tracks, vias
- 1,452, 334
- Pours
- 6
- Routed
- Yes
- KiCad
- KiCad 9.0 (file 20241229)
- Created
- 28 Aug 2025
- Updated
- 2 Nov 2026
Overview
Array is an open-source printed circuit board by Iari-Lab, from the Iari-Lab/OpenAcousticCamera repository on GitHub. It is a 4-layer board of 179.6 × 161 mm with 266 parts on 161 nets, routed with 1,452 tracks and 334 vias.
It is built around the SPH0641LU4H-1, WS2813C-2020-V6 and M55-7002042R. Its parts include 128 capacitors, 60 diodes and 2 connectors.
Main components
3
SPH0641LU4H-1
LGA-5(3.5x2.7)-26dB 0.98mm 1.8V 2.65mm 235uA~270uA 3.5mm 64.3dB Omnidirectional Omnidirectional pickup LGA-5(3.5x2.7) MEMS Microphones ROHSKnowlesMEMS Microphones
WS2813C-2020-V6
-- HWDG ROHSWorldsemiUncategorisedM55-7002042R
SMD,P=1.27mmSMD,P=1.27mm Wire To Board Connector ROHSHarwinWire To Board Connector
README
README.mdOpenAcousticCamera
Parts
266| Qty | Value | Footprint | References |
|---|---|---|---|
| 61 | 100nF | smd:C_0201_0603Metric | C0, C10, C12, C14, C16, C100, C102, C104, C106, C108, C110, C112, C114, C116, C118, C127 +45 |
| 60 | 4.7uF | smd:C_0402_1005Metric | C1, C11, C13, C15, C17, C19, C101, C103, C105, C107, C109, C111, C113, C115, C117, C119 +44 |
| 60 | SPH0641LU4H-1 | smd:MIC_SPH0641LU4H-1 | M0, M1, M2, M10, M11, M12, M13, M14, M15, M16, M17, M18, M19, M20, M21, M22 +44 |
| 60 | WS2813C_2020 | smd:WS2813C_2020 | D0, D1, D2, D10, D11, D12, D13, D14, D15, D16, D17, D18, D19, D20, D21, D22 +44 |
| 7 | 22uF | Capacitor_SMD:C_0805_2012Metric | C120, C121, C122, C123, C124, C125, C126 |
| 6 | MountingHole | MountingHole:MountingHole_2.5mm | H5, H6, H7, H8, H9, H10 |
| 4 | MountingHole | TH:WA-SMST | H1, H2, H3, H4 |
| 3 | TestPoint | raspberry:TestPoint_Pad_D1.5mm | TP1, TP2, TP65 |
| 2 | M55-7002042R | smd:M557002042R | J1, J2 |
| 1 | 100Ω@100MHz | Resistor_SMD:R_0603_1608Metric | FB1 |
| 1 | LOGO | smd:OSHW-Logo2_9.8x8mm_SilkScreen | G1 |
| 1 | RPICAM | raspberry:RPI_CAMERA | CAM0 |
Questions
How big is the Array PCB?
It measures 179.6 × 161 mm and has 4 copper layers, 1.6 mm thick.
What parts does the Array use?
266 parts, built around the SPH0641LU4H-1, WS2813C-2020-V6 and M55-7002042R. 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 Array KiCad files?
From the Iari-Lab/OpenAcousticCamera repository on GitHub, at the commit this page was made from: the board is pcb/mic_array/array.kicad_pcb and its schematic pcb/controller_zynq/AudioOutput.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Array design in my own project?
Its repository states no licence, so its author keeps all rights: ask Iari-Lab before reusing the design.
More from Iari-Lab/OpenAcousticCamera
1Similar boards
- 4 layers179.6 × 161 mm
- 2 layers
Ssl
meerstern/Sound_Direction_Sensor
This board detects the direction of sound with 4-pdm mems mic using GCC-PHAT algorithm.
56 parts17 - 2 layers20 × 15 mm
- 4 layers57 × 56 mm
Iot led strip pcb
0xjmux/iot_leddriver_hw
ESP32-based WS2812B LED Strip Driver PCB, designed for music visualization
85 parts9 - 2 layers100 × 100 mm
Acoustic camera
mhbbParsa/acoustic_camera
FPGA acoustic camera with real-time sound source localisation using Goertzel beamforming, displayed as a live heatmap on VGA/webcam overlay
68 parts6MIT - 2 layers43.2 × 44.5 mm
- 2 layers67.1 × 88.4 mm
DE429 001 INSTALL
Purdue-Northwest-Vibration-Anaylsis/Purdue-Northwest-Vibration-Analysis
Vibration analysis senior design project for purdue northwest.
48 parts2 - 2 layers75 × 5.5 mm
Cc ring
JackToaster/Wearable-LED-Ring
Tiny LED ring with a microphone for wearable music-reactive lighting
42 parts1