4 layers119.4 × 119.4 mm
2 layers66 × 52 mm
Pi pico microphone
computer-whisperer/acoustic_array- Size
- 66 × 52 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 31
- Nets
- 47
- Pads
- 177
- Tracks, vias
- 676, 63
- Pours
- 1
- Routed
- Yes
- KiCad
- KiCad 6 (file 20211014)
- Created
- 1 Oct 2022
- Updated
- 8 Oct 2022
Overview
Pi pico microphone is an open-source printed circuit board by computer-whisperer, from the computer-whisperer/acoustic_array repository on GitHub. It is a 2-layer board of 66 × 52 mm with 31 parts on 47 nets, routed with 676 tracks and 63 vias.
It is built around the AP63205WU, NAU8315YG and ICS-43434. Its parts include 10 capacitors, 7 ICs, 4 resistors, 4 diodes and 3 connectors. It belongs with the audio and music boards and the RP2040 boards of this library.
Main components
3
AP63205WU
TSOT-23-6-40℃~+85℃@(TA) 1 1.1MHz 22uA 2A 3.8V~32V 5V Buck Built-in Fixed Overcurrent Protection、Light load efficient mode、Cycle-by-cycle current limiting、Hiccup current limiting、EMI optimization (spread spectrum) Step-down type Yes TSOT-23-6 DC-DC Converters ROHSDiodes IncorporatedDC-DC Converters
NAU8315YG
QFN-20(4x4)-40℃~+85℃ 0.017% 1-Channel 2.5V~5.25V 3.2Wx1@4Ω 82dB 91% Automatic mute/no-noise switch、Enable/shutdown function、Filterless architecture、Analog voltage gain、Built-in audio processing Class D QFN-20(4x4) Audio Amplifiers ROHSNuvoton TechAudio Amplifiers
ICS-43434
LGA-6(3.5x2.7)-26dB -40℃~+85℃ 0.98mm 1.65V~3.63V 2.65mm 3.5mm 550uA 64dB I2S Omnidirectional Omnidirectional pickup LGA-6(3.5x2.7) MEMS Microphones ROHSTDK InvenSenseMEMS Microphones
Parts
31| Qty | Value | Footprint | References |
|---|---|---|---|
| 4 | 0.1uF | Capacitor_SMD:C_0603_1608Metric | C1, C2, C3, C4 |
| 4 | APA102 | LED_SMD:LED_RGB_5050-6 | D1, D2, D3, D4 |
| 4 | ICS-43434 | Library:MIC_ICS-43434 | U1, U2, U3, U4 |
| 2 | 0 | Resistor_SMD:R_0603_1608Metric | R4, R5 |
| 2 | 100k | Resistor_SMD:R_0603_1608Metric | R1, R2 |
| 2 | 22uF | Capacitor_SMD:C_0603_1608Metric | C9, C10 |
| 2 | Conn_01x02 | Connector_JST:JST_XH_S2B-XH-A-1_1x02_P2.50mm_Horizontal | J2, J3 |
| 2 | MountingHole_Pad | MountingHole:MountingHole_3mm_Pad_Via | H3, H4 |
| 1 | .1uF | Capacitor_SMD:C_0603_1608Metric | C5 |
| 1 | 100nF | Capacitor_SMD:C_0603_1608Metric | C8 |
| 1 | 10uF | Capacitor_SMD:C_0603_1608Metric | C7 |
| 1 | 4.7uF | Capacitor_SMD:C_0603_1608Metric | C6 |
| 1 | 4.7uH | Inductor_SMD:L_0603_1608Metric | L1 |
| 1 | AP63205WU | Package_TO_SOT_SMD:TSOT-23-6 | U7 |
| 1 | Conn_01x02 | Connector_JST:JST_XH_B2B-XH-A_1x02_P2.50mm_Vertical | J1 |
| 1 | NAU8315 | Library:QFN50P400X400X80-21N | U6 |
| 1 | PicoW | RPi_Pico:RPi_PicoW_SMD_TH | U5 |
Questions
How big is the Pi pico microphone PCB?
It measures 66 × 52 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Pi pico microphone use?
31 parts, built around the AP63205WU, NAU8315YG and ICS-43434. 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 Pi pico microphone KiCad files?
From the computer-whisperer/acoustic_array repository on GitHub, at the commit this page was made from: the board is pcb/pi_pico_microphone.kicad_pcb and its schematic pcb/libs/picow_vga_sd_aud.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Pi pico microphone design in my own project?
Its repository states no licence, so its author keeps all rights: ask computer-whisperer before reusing the design.
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