dottgonzo

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About dottgonzo

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  1. hi peter, you can copy the same fstab on opi, without the boot partition (remember to create the correct partitions for unionfs and copy there the current contents of etc and var). why you are using unionfs for home and media?, i think that is better if your app stop to write on home and use some folder on tmp (but this is only my opinion) the cmdline.txt of the opi is the /boot/boot.cmd on opi, but i'm not sure that works as the opi, the opi bootloader is different, and you have find the correct row. by the way i've some trouble with the opi (i can do it on rpi) if i need to restore the the system (for example to install some other package). It is useful in development stage.
  2. thanks pzw, i can't understand the CE certification for iot (ELV ultra low voltage category) products (not toys, or medical stuffs), when and how is needed to test something if everything is under 50v (ELV) with eventually a CE 220v 1A external standard usb power charger. The law (for me) is unclear about that, (maybe not for an eletrical engineer), and i can't found some article that cover this kind of products specifically
  3. I'm very confused about what is needed to certify a device as CE. As i read the law was changed in 2014, but i can't find something to read that is useful for my burocracy knowledge level (zero). For example i don't understand why i have to certify the psu (the common 5V 2A/3A used by all the boards) with the board, if they are separated from the main device and both certified separately... And i don't understand if a Company/Engineer can self-certify a device (and which test is needed)... someone can share a link about that? Most of the google results are written by company that promote their certifying service, and are unclear
  4. Hi tkaiser, thanks for your answer, do you know if can take a CE board, enclose it in a common case and sell in EU, or i need a CE enclosure, or i need all the package (board + enclosure) certified together??
  5. Hi devs, i'm looking for informations about the needed certifications to be able to sell a board in EU (with enclosure). I know that many board have ce/fcc certifications, and others not, but the question is: 1) when i compose the product with an hypothetical fcc/ce board + an enclosure (let's suppose an fcc/ce enclosure, if it exists) + other CE/FCC modules i need to obtain a new certification!!?? 2) there are enclosure fcc/ce approved for orange pi (or if not) for some boards? 3) is the orangepi fcc/ce certified (seems no...), expecially the zero? 4) if is mandatory that the board and the enclosure must be certified together, there is a board with enclosure included, that is ce certified? thanks
  6. dottgonzo

    ubifs

    doh! I have never used any NAND SLC? Using an SLC NAND can get a good reliability, with and without, a specific fs as ubifs? with my project, I decided to not store anything others than configuration files, but I am exploring some sort of reasonable alternative to be able to save some data while the device is in operation
  7. dottgonzo

    ubifs

    Thanks for your answer zador, i know that armbian don't support ntc chip, but i'm looking for something that allow me to use writable partitions with a system that could be switched off randomly. So there is no reliable read andwrite fs for mlc nand???
  8. dottgonzo

    ubifs

    Hi, while i was trying to work with the NTC C.H.I.P. i've started to take in consideration the ubifs instead of mounting all the system partition as read only. Someone have experience with ubifs? do it is supported by armbian? Someone can help me with some guide?
  9. after some week of uninterrupted working i can say that 3 opizero are working perfectly! And for now is my favorite board I'm just start to use it instead of the orangepiPC and raspberry
  10. Hi, i've received 5 ntc chip boards from 4 days. Build a customized OS without buildroot is partially not documented (and chip is very different from the other boards), but is asked often in many threads on ntc chip community. I hope to find another weekend to spend to obtain a custom image of a debian, then i want to try to see if i can use the armbian stack with ntc kernel. Someone other is trying to do the same? emmc+the ability to easily power the board by a battery, in 9$, is interesting and useful for some scenario, as opilite/opi zero/opi pc or small mcu in others, etc... In addition what do you think about an cortex r8 focused on realtime?
  11. seems that now my 3 opilites are working perfectly (from 2 weeks, but they aren't tested on countries with power issues). Do you plan to change this settings on the future release of armbian for rpilite? or can i send a pull request somewhere? now i'm waiting to receive the rpizero to test it
  12. with unionfs-fuse (look here https://forum.armbian.com/index.php/topic/1526-armbian-in-read-only-mode/#entry20043)
  13. i can say that is not true. I use 2 opi pc connected with ethernet on 2 places in country, in a place where the power is cut every minimum 4-5 days, and there are many issues, and my opi pc are working 1 from 5 months and 1 from 2 months, with no issues. Your problem, for my opinion, is sd corruption and problems with ethernet connectivity. If you use the sd in read only mode and send the data over internet or to other systems AND use a watchdog to recover the connectivity, you can relax with opi pc (armbian 5.16 i think, don't remember, with original psu from the same manifacturier). And i would to say that the opi pc works better then rpi2-rpi3 (with ethernet), because 1 of that was placed inside a box where the temperature is 50-60 degree (the rpi burn) From some days i'm using the opi lite with the suggestion of tkaiser on my home while i'm trying to simulate several problems (connectivity and power issues) and they are working perfect with a common 3A psu for now (sorry if i've not tested the voltage yet). I think to put the opi lite on one of the worst place where there are rpi working (this week) to see if the voltage adjustment suggested is just enough for my case
  14. as writed before, my boards works with all fs in read only mode, so i can exclude sd corruption. On my tests the opilite freeze on boot (and only on boot, while systemd load the system), but maybe because my applications are not intensive and the system is poorely loaded. So i'm waiting to find the time to conduit tests for this issue
  15. i want to try to use buildroot in the future, for now i use a script that create partitions, add the mbr, copy the file from a previously backupped / partition and from other partitions with all my programs and configurations just installed, and all works in 2-10 minutes, depends on sd speed