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  • December 11, 2014 at 8:54 pm in reply to: Networking Issues #867
    uRADMonitor
    Keymaster

    I think you’re right Ben. And this makes it strange: to get inconsistent behaviour depending on the network!

    I have a router that I know was causing some problems with uRADMonitor units. I’ll need to find it and run some tests before I can report back.

    The DHCP code was mainly written by me, and in the last revision I added the hostname option (in the form uRADMonitor-). Previously you would only see the MAC, the allocated IP and no hostname. I might have done something wrong so hopefully things will clarify.

    Another option is checking it against the Arduino implementation, but I find that complicated with all the Arduino libs and custom I/O code.

    December 11, 2014 at 8:47 pm in reply to: Client side charts #864
    uRADMonitor
    Keymaster

    Sounds great! And nice work

    December 11, 2014 at 8:40 pm in reply to: 12000012 – My uRADMonitor installation #862
    uRADMonitor
    Keymaster

    Looks great, Peter! Congrats on the nice installation.

    December 11, 2014 at 8:38 pm in reply to: Networking Issues #860
    uRADMonitor
    Keymaster

    The 02…. are locally administered addresses. Nothing special about them just that they are free. To register universal administered addresses I will have to pay some money. I will do that in the future.

    Vinz, are you getting the same issues with DHCP? can you post more details?

    In my local tests, DHCP was fine, so it’s a bit hard for me to replicate this for a fix:

    Attachments:

    1. Screen-Shot-2014-11-30-at-17.21.58.png

    December 11, 2014 at 8:34 pm in reply to: [Solved] Unit won’t connect from 4G network #859
    uRADMonitor
    Keymaster

    I’m afraid there were no updates. So the change must have been local. Yes, currently there are several IP used. The one for data is correct: 23.239.13.18.

    Lars, just as a note, I don’t think this is physical, nevertheless if you are unable to find the problem, you can send the unit back anytime to get a replacement.

    December 9, 2014 at 6:27 pm in reply to: Security: invalid data injection #796
    uRADMonitor
    Keymaster

    Hello Vinz,

    I think you have covered pretty much everything to secure the problem and even beyond that to detect if a device is behaving suspicious.

    Also @Jeff ‘s suggestion on checking upload interval is important in limiting invalid data.

    Unless anyone has anything else to add, I will propose this as solution, and standardise it in a specs document written for the next firmware release.

    December 9, 2014 at 6:14 pm in reply to: Security: invalid data injection #792
    uRADMonitor
    Keymaster

    Indeed patching would automate the production of unique firmware binaries, without compiling the source code every time.

    But there is also the approach presented here: https://www.uradmonitor.com/topic/automated-device-ids/

    The eeprom can also be written without changing the firmware using a separate script, after main firmware is written.

    December 9, 2014 at 5:54 pm in reply to: Android/iOS App #782
    uRADMonitor
    Keymaster

    Very good ideas, I find the one with the favourite station particularly useful.

    December 9, 2014 at 5:53 pm in reply to: uRADMonitor Wiki #781
    uRADMonitor
    Keymaster

    I’d say yes, it seems a useful thing to have, although my experience with Wiki is limited.

    December 9, 2014 at 5:51 pm in reply to: Client side charts #780
    uRADMonitor
    Keymaster

    highcarts.com looks interesting, I will check it out in more detail.


    @vinz    , would you post the link to your implementation here?

    December 9, 2014 at 5:43 pm in reply to: more than one central-server? #779
    uRADMonitor
    Keymaster

    I love this idea. Clean and efficient!

    December 9, 2014 at 5:41 pm in reply to: Database optimisations #777
    uRADMonitor
    Keymaster

    Yes, this makes sense. Regarding 2) what would be the memory requirements on the linux box?

    • This reply was modified 9 years, 10 months ago by uRADMonitor.
    December 9, 2014 at 5:40 pm in reply to: Firmware upgrade #776
    uRADMonitor
    Keymaster

    The first uRADMonitor devices used the mega168, but the project grew in complexity so the upgrade was natural.

    I was wondering if it would be possible to integrate OTA, using an exotic technique: having the code run in the first 16KB section of flash (offset 0), download the new firmware in the second section (offset 16K), than move new firmware block to offset 0 when download is ready. This might require a bootloader. I wonder if its possible to do it without one?

    Anyone has any experience with this?

    December 9, 2014 at 4:51 pm in reply to: Plans for the network – data access #774
    uRADMonitor
    Keymaster

    With the current hardware, OTA updates are impossible. Those interested in updating will have to do it manually. It is not complicated at all, but requires physical access to device’s PCB board and a USBAsp programmer
    (http://www.ebay.com/itm/171505112768)

    December 9, 2014 at 4:49 pm in reply to: Database optimisations #773
    uRADMonitor
    Keymaster

    A cron script to compute average/month, ran once per month?

    Probably this can be taken further: the cron script would compute the average for last month, and move all previous month rows to “archive” db.

    However some people would like to “go back in time” and analyse data: say there is a spike that happened two months ago on a given station. One might want to check the data including “zooming” to see max resolution data to understand the phenomenon better. Then move to other stations nearby to check for the same thing.

    I wonder how this scenario could be implemented efficiently.

    There is one row/device/minute added to the db constantly.

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