os 추가
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김민서
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# OS images are intentionally kept out of git.
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os/*.7z
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os/*.img
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os/*.img.*
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os/*.xz
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os/*.zip
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# Local audio/debug captures.
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*.wav
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*.aiff
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*.flac
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# C/C++ build outputs.
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build/
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cmake-build-*/
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*.o
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*.obj
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*.exe
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*.dll
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*.dylib
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*.so
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22
README.md
22
README.md
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# mic
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wifi를 사용하는 임베디드 마이크 제작 프로젝트
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Orange Pi Zero 2W 기반 Wi-Fi 라발리에 마이크 송신기와 Mac 수신/믹서 프로젝트입니다.
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```text
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USB lavalier -> Orange Pi Zero 2W -> 2.4/5 GHz Wi-Fi router -> Mac mixer
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```
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## Structure
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- `client/`: Orange Pi에서 실행하는 마이크 송신기
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- `server/`: Mac에서 실행하는 UDP 수신/믹서
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- `os/`: Orange Pi OS 이미지 보관 위치
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- `docs/`: 보드 세팅과 스트리밍 실행 가이드
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## Current Direction
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- OS: official Orange Pi Debian 12 Bookworm Server, Linux 6.1
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- Language: C++
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## Docs
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- `docs/01-orange-pi-os.md`
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# Orange Pi Zero 2W OS setup
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## Recommended image
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Use the official Debian 12 Bookworm server image for Orange Pi Zero 2W:
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```text
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orangepizero2w_1.0.0_debian_bookworm_server_linux6.1.31.7z
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```
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Orange Pi's Zero 2W wiki lists Debian 12 Bookworm with Linux 6.1 as supported, and its Linux 6.1 driver table marks Wi-Fi, Type-C USB2.0, TF card boot, and related board features as OK.
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Official references:
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- https://www.orangepi.org/orangepiwiki/index.php/Orange_Pi_Zero_2W
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- https://www.orangepi.org/html/hardWare/computerAndMicrocontrollers/service-and-support/Orange-Pi-Zero-2W.html
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## Flashing
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1. Download the image into `os/`.
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2. Extract the `.7z` file to get the `.img`.
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3. Flash the `.img` to the microSD with Balena Etcher, Raspberry Pi Imager, or another verified imaging tool.
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4. Mount the flashed boot/root partition and configure first-run Wi-Fi before inserting it into the Orange Pi.
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## Headless Wi-Fi first boot
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On the flashed SD card, find:
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```text
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/boot/orangepi_first_run.txt.template
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```
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Copy it to:
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```text
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/boot/orangepi_first_run.txt
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```
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Then set the Wi-Fi fields. `os/orangepi_first_run.example.txt` contains a local example for Korea region code `KR`.
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The important values are:
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```text
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FR_net_change_defaults=1
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FR_net_ethernet_enabled=0
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FR_net_wifi_enabled=1
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FR_net_wifi_ssid='YOUR_WIFI_SSID'
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FR_net_wifi_key='YOUR_WIFI_PASSWORD'
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FR_net_wifi_countrycode='KR'
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```
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## First login
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For official Debian/Ubuntu Orange Pi images, the usual default accounts are:
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```text
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orangepi / orangepi
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root / orangepi
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```
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Change the password on first login.
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```bash
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passwd
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sudo passwd root
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```
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# OS image storage
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Put the Orange Pi Zero 2W OS image files here, but do not commit them.
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Recommended first image:
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```text
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orangepizero2w_1.0.0_debian_bookworm_server_linux6.1.31.7z
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```
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Why this one:
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- Debian 12 Bookworm server image keeps the transmitter small and headless.
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- Linux 6.1 is listed by Orange Pi as supporting Wi-Fi, Type-C USB2.0, TF card boot, and the usual board peripherals on Zero 2W.
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- A server image gives us a small, headless baseline for the future C++ transmitter.
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Official pages:
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- https://www.orangepi.org/orangepiwiki/index.php/Orange_Pi_Zero_2W
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- https://www.orangepi.org/html/hardWare/computerAndMicrocontrollers/service-and-support/Orange-Pi-Zero-2W.html
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Notes:
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- Use the Zero 2W-specific image only. A generic ARM64 Debian or Ubuntu image will usually miss the board kernel/DTB/Wi-Fi pieces.
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- The official download page may redirect to external storage such as Google Drive.
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- Keep `.7z`, `.img`, `.xz`, and similar files in this folder locally; `.gitignore` excludes them.
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# Copy /boot/orangepi_first_run.txt.template to /boot/orangepi_first_run.txt,
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# then use values like these before the first boot.
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FR_general_delete_this_file_after_completion=1
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FR_net_change_defaults=1
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FR_net_ethernet_enabled=0
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FR_net_wifi_enabled=1
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FR_net_wifi_ssid='YOUR_WIFI_SSID'
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FR_net_wifi_key='YOUR_WIFI_PASSWORD'
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FR_net_wifi_countrycode='KR'
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FR_net_use_static=0
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FR_net_static_ip='192.168.0.50'
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FR_net_static_mask='255.255.255.0'
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FR_net_static_gateway='192.168.0.1'
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FR_net_static_dns='8.8.8.8 1.1.1.1'
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