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Showing content from https://github.com/Sev5000/Pico2_12bitADC_PCMAudio below:

Sev5000/Pico2_12bitADC_PCMAudio: PCB to neatly package a Raspberry Pi Pico 2 with an AD9226 12bit ADC and PCM1802 for capture with HSDAOH

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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