4 layers61.4 × 54 mm
Wifi floppy
stefanskotte/webadf
Web-based Amiga ADF library that mounts disks to a Gotek over WiFi
84 parts3MIT
4 layers132.8 × 75.8 mm
AudioPicoBare
elrir01/AudioPicoThis board receive audio from a BT source like a phone and outputs via a DAC the audio. It's an old project of mine but I've decided to publish it just now, so the full description is not ready and will be updated in…
- Size
- 132.8 × 75.8 mm
- Copper layers
- 4
- Thickness
- 1 mm
- Parts
- 84
- Nets
- 149
- Pads
- 429
- Tracks, vias
- 1,269, 248
- Pours
- 2
- Routed
- Yes
- KiCad
- KiCad 10.0 (file 20260206)
- Created
- 24 Aug 2026
- Updated
- 24 Aug 2026
Overview
AudioPicoBare is an open-source printed circuit board by elrir01, from the elrir01/AudioPico repository on GitHub, published under the GPL-3.0 licence. It is a 4-layer board of 132.8 × 75.8 mm with 84 parts on 149 nets, routed with 1,269 tracks and 248 vias.
It is built around the RP2350B, W25Q128JVPIQ and APS6404L-3SQR-SN, with the PCM5102APW, ABM8-272-T3 and CAT16-332J4LF among its other parts. Its parts include 36 capacitors, 21 resistors, 9 ICs, 5 connectors and 3 diodes. It belongs with the RP2040 and RP2350 boards of this library.
Main components
10
RP2350B
QFN-80-EP(10x10)48 Power-on reset (POR)、Watchdog reset、External pin reset (NRST)、Built-in general-purpose timer、Integrated LDO、True random number generator (TRNG)、Hardware ECC check、Independent watchdog (IWDG) QFN-80-EP(10x10) Microcontrollers (MCU/MPU/SOC) ROHSRaspberry PiMicrocontrollers (MCU/MPU/SOC)
W25Q128JVPIQ
WSON-8-EP(5x6)-40℃~+85℃ 100,000 cycles 10uA 120ms@(32KB) 128Mbit 133MHz 2.7V~3.6V 20 Years Power-on reset、Hardware write protection、Software write protection、Write enable latch、Absolute write protection、Power lock protection SPI WSON-8-EP(5x6) NOR FLASH ROHSWinbond ElecNOR FLASH
APS6404L-3SQR-SN
SOP-8SOP-8 PSRAM ROHSAP MemoryDRAM
PCM5102APW
TSSOP-20-25℃~+85℃ 1.8V~3.3V 2 32 384kHz 500uA 50MHz Audio Decoder Digital filtering、Power-down mode I2S TSSOP-20 ADCs/DACs - Special Purpose ROHSTexas InstrumentsADCs/DACs - Special Purpose
ABM8-272-T3
SMD3225-4P-40℃~+85℃ 10pF 12MHz 50Ω SMD crystal oscillator ±30ppm ±30ppm SMD3225-4P Crystals ROHSAbraconCrystals
CAT16-332J4LF
0603x43.3kΩ 4 62.5mW 8 ±200ppm/℃ ±5% 0603x4 Resistor Networks, Arrays ROHSBournsResistor Networks & Arrays
MLZ2012M3R3HT000
0805200mΩ 3.3uH 350mA 500mA ±20% 0805 Power Inductors ROHSTDKPower Inductors
PMEG40T30ERX
SOD-123W1 Independent 28uA@40V 3A 40A 40V 525mV@3A SOD-123W Schottky Diodes ROHSNexperiaSchottky Diodes
SJ1-3524N
--25℃~+85℃ 12V 1A Brass、Copper alloy Tin - Audio Connectors ROHSCUIAudio Connectors (Headphones)
SSM3K35AMFV,L3F
SOT-7231 N-channel 10pF 12pF 1V 20V 250mA 340pC@4.5V 36pF 500mW 9Ω@1.2V N-Channel SOT-723 MOSFETs ROHSToshibaMOSFETs
README
README.mdAudioPico
Description
:construction: Work in Progress
This board receive audio from a BT source like a phone and outputs via a DAC the audio. It's an old project of mine but I've decided to publish it just now, so the full description is not ready and will be updated in the next time. Here are some photos of the board:
How to compile yourself
:construction: Work in Progress
In the meantime feel free to check the various files such as the PCB or the 3D Model.
Parts
84| Qty | Value | Footprint | References |
|---|---|---|---|
| 13 | 100nF | Capacitor_SMD:C_0402_1005Metric | C2, C3, C4, C5, C6, C7, C8, C12, C13, C14, C19, C21, C22 |
| 6 | 0.1uF | Capacitor_SMD:C_0603_1608Metric | C24, C26, C27, C29, C30, C32 |
| 5 | 2.2uF | Capacitor_SMD:C_0402_1005Metric | C1, C10, C17, C18, C20 |
| 4 | 2.2uF | Capacitor_SMD:C_0603_1608Metric | C33, C34, C35, C36 |
| 3 | 10k | Resistor_SMD:R_0402_1005Metric | R6, R18, R19 |
| 3 | 10uF | Capacitor_SMD:C_0603_1608Metric | C9, C11, C23 |
| 3 | 27 | Resistor_SMD:R_0402_1005Metric | R2, R3, R4 |
| 2 | 100K | Resistor_SMD:R_0402_1005Metric | R13, R17 |
| 2 | 10K | Resistor_SMD:R_0402_1005Metric | R8, R9 |
| 2 | 10pF | Capacitor_SMD:C_0402_1005Metric | C15, C16 |
| 2 | 10uF | Capacitor_SMD:C_0805_2012Metric | C28, C31 |
| 2 | 470 | Resistor_SMD:R_0402_1005Metric | R5, R7 |
| 2 | 470 | Resistor_SMD:R_0603_1608Metric | R20, R21 |
| 2 | 5K1 | Resistor_SMD:R_0402_1005Metric | R14, R15 |
| 2 | SW_MEC_5E | AudioPicoBare:SW_Push_434133025816_Edit | SW1, SW2 |
| 2 | ~ | Package_TO_SOT_SMD:SOT-23-5_HandSoldering | U7, U8 |
| 1 | 10uF | Resistor_SMD:R_0603_1608Metric | C25 |
| 1 | 150K | Resistor_SMD:R_0402_1005Metric | R10 |
| 1 | 1K | Resistor_SMD:R_0402_1005Metric | R16 |
| 1 | 1k | Resistor_SMD:R_0402_1005Metric | R12 |
| 1 | 1k res array | AudioPicoBare:CAT16104J4LF | RN1 |
| 1 | 220 | Resistor_SMD:R_0402_1005Metric | R1 |
| 1 | 75K | Resistor_SMD:R_0402_1005Metric | R11 |
| 1 | ABM8-272-T3 | AudioPicoBare:ABM8-272-T3_ABR | X1 |
| 1 | AP7366EA-33SN-7 | AudioPicoBare:U-DFN2020-6_AP7366EA-33SN-7_DIO | U4 |
| 1 | APS6404L-3SQR-SN | AudioPicoBare:APS_PSRAM | U5 |
| 1 | BLM18EG471SN1D | AudioPicoBare:BLM18SP221SN1B | FB1 |
| 1 | BuyDisplay Module | Display_Module_ER-TFT:ER-TFT050-6-5654_Margin | U1 |
| 1 | CAT16-332J4LF | AudioPicoBare:CAPCAV80P155X320X60-8L | RN2 |
| 1 | Conn_01x06 | Connector_PinHeader_2.54mm:PinHeader_1x06_P2.54mm_Vertical | J7 |
| 1 | DEBUG_CONNECTOR | Connector_JST:JST_SH_SM03B-SRSS-TB_1x03-1MP_P1.00mm_Horizontal | J1 |
| 1 | LED_GREEN_USER | LED_SMD:LED_0603_1608Metric | D1 |
| 1 | MLZ2012M3R3HT000 | AudioPicoBare:INDC2012X105N | L1 |
| 1 | NSR0530HT1G | AudioPicoBare:SOD2512X110N | D3 |
| 1 | PCM5102A | Package_SO:TSSOP-20_4.4x6.5mm_P0.65mm | U6 |
| 1 | PMEG40T30ERX | AudioPicoBare:SODFL3517X110N | D2 |
| 1 | Pico RM2 | AudioPicoBare:Pico_RM2 | U2 |
| 1 | RP2350B | AudioPicoBare:QFN40P1000X1000X90-81N-D | U3 |
| 1 | R_Pack04_Split | Resistor_SMD:R_Array_Convex_4x0603 | RN220 |
| 1 | SJ1-3524N | AudioPicoBare:SJ13524N | J6 |
| 1 | SSM3K35AMFV,L3F | AudioPicoBare:SSM3K35AMFVL3F | Q1 |
| 1 | Serial_Pico | Connector_JST:JST_SH_SM03B-SRSS-TB_1x03-1MP_P1.00mm_Horizontal | J3 |
| 1 | SolderJumper_2_Open | Jumper:SolderJumper-2_P1.3mm_Open_RoundedPad1.0x1.5mm | JP1 |
| 1 | USB_C_Receptacle_USB2.0_16P | Connector_USB:USB_C_Receptacle_HCTL_HC-TYPE-C-16P-01A | J2 |
| 1 | W25Q128JVPIQ | AudioPicoBare:SON127P600X500X80-9N-D | IC1 |
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Questions
How big is the AudioPicoBare PCB?
It measures 132.8 × 75.8 mm and has 4 copper layers, 1 mm thick.
What parts does the AudioPicoBare use?
84 parts, built around the RP2350B, W25Q128JVPIQ, APS6404L-3SQR-SN and PCM5102APW. 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 AudioPicoBare KiCad files?
From the elrir01/AudioPico repository on GitHub, at the commit this page was made from: the board is KiCadProject/AudioPicoBare/AudioPicoBare.kicad_pcb and its schematic KiCadProject/AudioPicoBare/AudioPicoBare.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the AudioPicoBare 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).