{{indexmenu>.#1| nojs navbar nocookie msort }} {{indexmenu_n>213}} ====== 2.1.3 Setup Operating System onto the Orange Pi Zero 2 ====== ===== Foreword ===== The //Orange Pi Zero 2// hardware looks to be an interesting and //available// Single Board Computer (SBC). See [[http://www.orangepi.org/html/hardWare/computerAndMicrocontrollers/details/Orange-Pi-Zero-2.html|http://www.orangepi.org/html/hardWare/computerAndMicrocontrollers/details/Orange-Pi-Zero-2.html]] for the hardware details. [ i ordered from [[https://de.aliexpress.com/item/1005002002861625.html|https://de.aliexpress.com/item/1005002002861625.html]] with a plastic case for approx 40 EUR - including delivery in May 2022 ] ==== USB-Hub ==== With one single USB jack, you'll need an USB-Hub to connect multiple USB devices (RTL-SDR dongle, GPS-Mouse and additional micro-SD card). Unfortunately, the first two USB-2.0-Hubs, i tested, didn't work: data-transfer from RTL-SDR (reception) did break the connection. I assume, that higher power consumption is the reason. Not sure. With following devices, the connection looks good: * https://www.amazon.de/gp/product/B09Z2128H7 * https://www.amazon.de/gp/product/B09Q2P3NZZ ==== Not working builtin components ==== Be aware, that following things are **NOT** working with Linux: * Mali GPU * Video codec The info about that can be found - sort of hidden - in the User Manual in chapter 3.2 ''Linux4.9 kernel driver adaptation status'' of the file ''orangepi zero2_h616_user manual_v1.6.pdf''. Happily, none of these are necessary for the FMLIST-Scanner. ==== Wiring ==== Wiring (ATX-buttons, LEDs or Piezo-buzzer) is tested meanwhile - but with **not so good** results: == Output / LEDs == Using [[https://github.com/orangepi-xunlong/wiringOP|https://github.com/orangepi-xunlong/wiringOP]] can set output pins, e.g. LEDs. This does work. == Tone output / Piezo buzzer == Ideally, this is done utilizing hardware PWM support - to save CPU interrupts. But i could not find any GPIO pin, capable of hardware PWM. Software/emulated PWM for the buzzer might work - haven't tested so far. == Input / ATX-knobs == Sensing/reading GPIO input with internal pull-up/down resistors doesn't work with the WiringOP library. This, ATX-button won't give correct state - without external resistors. See [[https://kalitut.com/raspberrypi-gpio-pull-up-pull-down-resistor/|https://kalitut.com/raspberrypi-gpio-pull-up-pull-down-resistor/]], how external resistor would need to be wired. I didn't try for now. Upload of result - by pressing the button - won't work. \\ But, shutdown and reboot can be performed with the builtin //power switch//. == Resume == Happily, at least for static (non-mobile) use, you won't need any of LEDs, buzzer or ATX-knobs.\\ Buzzer and LEDs are nice to see/hear some progress, but you can go mobile without .. and check progress through an internet connection over phone/tablet and WiFi. ==== Temperature ==== I would recommend some heatsinks for the CPU - as temperature does temporarily rise over 80°C. \\ Ideally, i'd also suggest a CPU fan, but couldn't find a suitable housing. ===== Download the image ===== Orange Pi does provide a //Debian Image// for the //Orange Pi Zero 2// at [[http://www.orangepi.org/html/hardWare/computerAndMicrocontrollers/service-and-support/Orange-Pi-Zero-2.html|http://www.orangepi.org/html/hardWare/computerAndMicrocontrollers/service-and-support/Orange-Pi-Zero-2.html]]. There are also some //Ubuntu// images ; but i did only try the latest Debian one from May 9th 2022. An older Ubuntu image failed running ''rtl_test'' and ''rtl_sdr''. Following the //Debian// download link to Google Drive, choose \\ ''Orangepizero2_3.0.0_debian_bullseye_server_linux5.16.17.7z'' \\ (as i did), cause the scanner doesn't need a desktop. ===== Write to micro-SD card ===== Please follow the instructions in chapter 2 ''Instructions to use the development board'' of the user manual to write the image to a micro-SD card. ===== First boot from micro-SD card ===== You should be able to boot and login with one of following user accounts as described in the user manual ^ User ^ Password ^ | root | orangepi | | orangepi | orangepi | i strongly recommend to change the default passwords! Default hostname is ''orangepizero2''. You should be able to connect with ssh orangepi@orangepizero2 ===== Connecting multiple devices through an USB-Hub ===== It depends on the USB-Hub, if devices can be resetted .. and run flawlessly afterwards.\\ With a tested USB-Hub, after a ''resetScanDevice.sh'', the device was listed but freezed on ''rtl_test'' and ''rtl_sdr''. In the scanner configuration file, ''FMLIST_SCAN_RESET_DEVICE'' needs to be disabled.\\ ''FMLIST_SCAN_DEAD_REBOOT'' might be enabled instead. **anyway, i could NOT run ''rtl_sdr'' at all, when using an USB-Hub!!!**\\ i could run the scanner, when connecting the RTL-SDR dongle directly to the //Orange Pi Zero 2//, having no free USB jack to connect GPS mouse or a memory-stick! If you intend to use the scanner installed at a fixed place, e.g. at you home, you won't need to connect a GPS mouse, by configuring the GPS coordinates manually. And, i'd dislike, but you could write the results directly onto the same SD-card - as the OS, by configuring ''FMLIST_SCAN_MOUNT="0"'' and setting ''FMLIST_SCAN_RESULT_DIR''.\\ However, i would prefer an Orange Pi 3 LTS for a slightly higher price. ===== System Update & Configuration ===== Please continue with [[fmlist_scanner:prepare_exisiting_linux_or_preinstalled_pi|2.2 Setup on a pre-installed Pi or PC]]