4 layers24.4 × 24.4 mm
OSO SWAT C1-rounded
joeycastillo/Sensor-Watch
A board replacement for the classic Casio F-91W wristwatch
36 parts2.1k
4 layers55.5 × 64.5 mm
Pico2 12bitadc
Sev5000/Pico2_12bitADC_PCMAudio22PCB to neatly package a Raspberry Pi Pico 2 with an AD9226 12bit ADC and PCM1802 for capture with HSDAOH
- Size
- 55.5 × 64.5 mm
- Copper layers
- 4
- Thickness
- 1.6 mm
- Parts
- 36
- Nets
- 58
- Pads
- 208
- Tracks, vias
- 303, 44
- Pours
- 3
- Routed
- Yes
- KiCad
- KiCad 8.0 (file 20240108)
- Created
- 8 Dec 2024
- Updated
- 30 Mar 2025
Overview
Pico2 12bitadc is an open-source printed circuit board by Sev5000, from the Sev5000/Pico2_12bitADC_PCMAudio repository on GitHub. It is a 4-layer board of 55.5 × 64.5 mm with 36 parts on 58 nets, routed with 303 tracks and 44 vias.
Its parts include 11 connectors, 9 resistors, 5 capacitors and 1 diode. It belongs with the radio and wireless boards and the RP2040 and RP2350 boards of this library.
README
README.mdPico2_12bitADC_PCMAudio
This is a PCB to neatly package a Raspberry Pi Pico 2, AD9226 ADC PCB and a PCM1802 audio board for capture with hsdaoh. Specifically designed to still be usefull without smds (no head switch input then). Through-hole only works just fine. For use with https://github.com/steve-m/hsdaoh-rp2350/tree/pcm1802
Features:
- The Pico 2 can be socketed with and without a DVI sock
- Mounting holes for the AD9226 pcb, PCM1802 and a socketed Pi Pico 2 with DVI sock (original and adafruit verfied)
- Audio input with either chinch or 3.5mm jack
- Jumper to choose between head switch input and clipping bit of the AD9226
- Protected head switch input has footprints for jst, as well as edge and horizontal SMA/SMB
Bill of material:
- 1x This PCB (Send the Gerber .zip to JLC, PCBWay, ..)
- 1x Raspberry Pi Pico 2
- 1x AD9226: https://aliexpress.com/item/1005003038271519.html
- 1x PCM1802: https://aliexpress.com/item/1005006412873984.html
- 2x RCA-105 or RCA-106: https://aliexpress.com/item/1005006152724809.html
- 1x PJ-324M 5P: https://aliexpress.com/item/1005006146950431.html
- 1x 3pin 2.54mm pin header horizontal for the headswitch/overflow selection jumper
- 1x 9pin 2.54mm pin-socket header
- 1x 2x10pin 2.54mm pin-socket header
- 1x 3pin 2.54mm pin header (remove the center pin for connecting R/L of the PCM1802)
- 1x 3pin 2.54mm pin-socket header (remove the center pin for connecting R/L of the PCM1802)
No SMD variant:
- 1x DVI-Sock: https://github.com/Wren6991/Pico-DVI-Sock for a flush fit with the pcb edge, otherwise the adafruit DVI sock works fine too
- 2x 15pin 2.54mm pin-socket header
SMD Variant:
- 1× Stewart SS-53000-001 connector (See https://github.com/Wren6991/Pico-DVI-Sock BOM for details)
- 8× 0402 270 ohm resistors
- 5x 0805 100nF ceramic capacitors
- 2x 20pin 2.54mm pin-socket header (For socketed Pi Pico 2 only)
For head switch input:
- 1x SOD123 3.3V zener diode
- 1x SOD123 standard diode
- 1x 0805 1k resistor
- 1x edge SMA/SMB or horizontal SMA/SMB and/or 2pin header
Notes: The PCM1802 board needs MODE0 (MODE1 only with previous HSDAOH releases) bridged and connected to 3.3V with a wire (Those boards have a design error): NOTE: Picture shows the configuration for the older firmware, now only MODE0 needs to be bridged and connected to 3.3V
Parts
36| Qty | Value | Footprint | References |
|---|---|---|---|
| 8 | 270 | Resistor_SMD:R_0402_1005Metric | R1, R2, R3, R4, R5, R6, R7, R8 |
| 6 | , , , , , | ||
| 5 | 100nF | Capacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C1, C2, C3, C4, C5 |
| 1 | 1k | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R9 |
| 1 | AD9226 PCB | Connector_PinSocket_2.54mm:PinSocket_2x10_P2.54mm_Vertical | J3 |
| 1 | AudioJack2_Ground_Switch | Connector_Audio:Jack_3.5mm_CUI_SJ1-3515N_Horizontal | J8 |
| 1 | D | Diode_SMD:D_SOD-123 | D1 |
| 1 | D_Zener3.3V | Diode_SMD:D_SOD-123 | Z1 |
| 1 | HeadSw | Connector_PinHeader_2.54mm:PinHeader_1x02_P2.54mm_Horizontal | J9 |
| 1 | HeadSw/Clipping | Connector_PinHeader_2.54mm:PinHeader_1x03_P2.54mm_Horizontal | J6 |
| 1 | L | RCJ-047:CUI_RCJ-047 | J5 |
| 1 | L R | TerminalBlock:TerminalBlock_MaiXu_MX126-5.0-02P_1x02_P5.00mm | J4 |
| 1 | NOT_HDMI_A | Connector:HDMI-SS-53000 | J1 |
| 1 | PCM1802 PCB | Connector_PinSocket_2.54mm:PinSocket_1x09_P2.54mm_Vertical | J2 |
| 1 | Pico | MCU_RaspberryPi_and_Boards:RPi_Pico_SMD_TH | Pico 2 |
| 1 | R | RCJ-047:CUI_RCJ-047 | J7 |
| 1 | SMA90 | Connector_Coaxial:SMA_Amphenol_901-143_Horizontal | J10 |
| 1 | SMAEdge | Connector_Coaxial:SMA_Samtec_SMA-J-P-H-ST-EM1_EdgeMount | J11 |
The 34 most common of 36 parts.
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Questions
How big is the Pico2 12bitadc PCB?
It measures 55.5 × 64.5 mm and has 4 copper layers, 1.6 mm thick.
What parts does the Pico2 12bitadc use?
36 parts. 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 Pico2 12bitadc KiCad files?
From the Sev5000/Pico2_12bitADC_PCMAudio repository on GitHub, at the commit this page was made from: the board is pico2_12bitadc.kicad_pcb and its schematic pico2_12bitadc.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Pico2 12bitadc design in my own project?
Its repository states no licence, so its author keeps all rights: ask Sev5000 before reusing the design.