Sev5000/Pico2_12bitADC_PCMAudio：PCB 用来整齐封装 Raspberry Pi Pico 2

项目介绍

Sev5000/Pico2_12bitADC_PCMAudio 是一个托管在 GitHub 上的开源项目，目前获得 22 个 Star、3 次 Fork。

仓库全名: Sev5000/Pico2_12bitADC_PCMAudio

README 摘要

Pico212bitADCPCMAudio 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…

完整内容见 GitHub 原始 README 或本页。

常见问题

如何获取 Pico2_12bitADC_PCMAudio 的源码？

可以直接克隆仓库：git clone https://github.com/Sev5000/Pico2_12bitADC_PCMAudio.git，默认分支为 main；安装与运行步骤见仓库 README。

Pico2_12bitADC_PCMAudio 最近还在维护吗？

仓库最近一次更新为 2025年3月31日，当前有 1 个未关闭 Issue；Star 数为 22，可作为社区活跃度的参考。

关于

GitHub 原始描述（英文）

PCB to neatly package a Raspberry Pi Pico 2 with an AD9226 12bit ADC and PCM1802 for capture with HSDAOH

ad9226 adc cvbs-decode dvi fm-rf-capture hsdaoh hstx ld-decode ms2130 ms2131 ntsc pal pcm1802 raspberry-pi-pico-2 rp2350 sdr tape-decode vhs-decode

22 Stars
3 Forks
4 Watching

描述取自 GitHub 官方 API，保持仓库作者书写的原文。

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Sev5000

Pico2_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

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Pico2_12bitADC_PCMAudio

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