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by rln
Sun Jul 31, 2016 9:44 pm
Forum: Advanced users
Topic: Making a Compute Module image
Replies: 8
Views: 3553

Re: Making a Compute Module image

smokeAndMirrors wrote:we would like to create an image that can be flashed onto an SD card and then subsequently other Compute Modules
You may be interested in my project Nard SDK which does exactly these kinds of things. It's specifically designed for product creators.
http://www.arbetsmyra.dyndns.org/nard/
by rln
Sun Jul 31, 2016 9:35 pm
Forum: Troubleshooting
Topic: microSD - Corruption - Raspbian
Replies: 3
Views: 655

Re: microSD - Corruption - Raspbian

delpi10 wrote:My question is, to do the logging its better to store the data fetched from the analyzers on external HD?
Yes, you need a real HD for this. A database may trash the SD card. A workaround may be to simplify the log format (add new data to end of a growing file) and use larger SD cards.
by rln
Mon Jul 25, 2016 9:25 pm
Forum: Advanced users
Topic: Enabling USB boot not working on my Pi3
Replies: 22
Views: 5507

Re: Enabling USB boot not working on my Pi3

asandford wrote:I doubt if that would have helped as the sdcard is only read during boot if the root FS is on iscsi.
I was thinking of using only a SD card and nothing else.
by rln
Mon Jul 25, 2016 10:46 am
Forum: Advanced users
Topic: Enabling USB boot not working on my Pi3
Replies: 22
Views: 5507

Re: Enabling USB boot not working on my Pi3

it again ate my SDcard, and didn't boot after running avconv for a few days. I already have root on iSCSI, but this time it destroyed the config.txt on the SDcard. You may be interested in my project Nard SDK which prevents theses kinds of issues. Everything run in RAM. The SD card is only read dur...
by rln
Sat Jul 23, 2016 8:37 pm
Forum: General discussion
Topic: RAM disk for greater reliability
Replies: 7
Views: 1955

Re: RAM disk for greater reliability

I'll give ReadOnlyRoot a try. However, if there's a better starting point for this (cheap opensource router with USB port?) then please let me know You may be interested in my project Nard SDK which prevents corruption by running entirely from RAM. The SD card is only used during boot. http://www.a...
by rln
Sat Jul 23, 2016 8:35 pm
Forum: General discussion
Topic: Card corruption with proper shutdown
Replies: 3
Views: 676

Re: Card corruption with proper shutdown

Piie wrote:excessive SD card corruption - even when following proper shutdown procedures.
You may be interested in my project Nard SDK which prevents corruption by running entirely from RAM. The SD card is only used during boot.
http://www.arbetsmyra.dyndns.org/nard/
by rln
Sat Jul 16, 2016 10:56 pm
Forum: General discussion
Topic: ARRGGH Power cuts.
Replies: 28
Views: 6885

Re: ARRGGH Power cuts.

Heater wrote:if you want to build something else, like an embedded system that has to run unattended for years in a remote location, then you need to think about things.
For those cases you might want to check out my Nard SDK. It's designed precisely for such scenarios.
http://www.arbetsmyra.dyndns.org/nard/
by rln
Fri Jul 01, 2016 8:43 pm
Forum: Advanced users
Topic: Requires supporting documents
Replies: 8
Views: 1563

Re: Requires supporting documents

Unfortunately you can't get them.
by rln
Tue Jun 21, 2016 2:53 pm
Forum: Compute Module
Topic: Frequent filesystem corruption (Raspbian)
Replies: 8
Views: 1921

Re: Frequent filesystem corruption (Raspbian)

nikhaldi wrote:it seems to manifest only after cold boot
Then I also suggest checking the power supply. If warm boot were affected I would suspect flash wear.
by rln
Tue Jun 21, 2016 9:09 am
Forum: Troubleshooting
Topic: How to corrupt SD-Card for sure?
Replies: 26
Views: 5504

Re: How to corrupt SD-Card for sure?

Good news the test succeded :) Were there two Pis in the test? One of them run Nard i guess, what were the other using?

Yes, the skeleton image is the one I need. However, only if an error occurred.
by rln
Tue Jun 21, 2016 8:30 am
Forum: Troubleshooting
Topic: How to corrupt SD-Card for sure?
Replies: 26
Views: 5504

Re: How to corrupt SD-Card for sure?

Has your weekend test finished yet?
by rln
Tue Jun 21, 2016 8:26 am
Forum: Compute Module
Topic: Frequent filesystem corruption (Raspbian)
Replies: 8
Views: 1921

Re: Frequent filesystem corruption (Raspbian)

Does the error occur only after a cold boot or does it happen after warm boots too?
by rln
Fri Jun 17, 2016 9:46 pm
Forum: Troubleshooting
Topic: How to corrupt SD-Card for sure?
Replies: 26
Views: 5504

Re: How to corrupt SD-Card for sure?

I see the red/green/blue gradient square on the upper right corner, the green ACT led is flashing normally and then after a couple of seconds everything stays black and the ACT led flashes in an interval of a second. The square is an indication of bad power. Change power supply and cables. The slow...
by rln
Fri Jun 17, 2016 8:06 pm
Forum: Troubleshooting
Topic: How to corrupt SD-Card for sure?
Replies: 26
Views: 5504

Re: How to corrupt SD-Card for sure?

jarkob wrote:I tried the prebuilt image already, but it doesn't boot.. I read on your site that it is for the Pi 1 B. I have a Pi 2 B, could that be the issue?
Doesn't boot? :shock: It should work fine for Pi 2 B as well... I'll re-check it ASAP.

Update: The prebuilt image works. I've tested it again.
by rln
Fri Jun 17, 2016 7:29 pm
Forum: Troubleshooting
Topic: How to corrupt SD-Card for sure?
Replies: 26
Views: 5504

Re: How to corrupt SD-Card for sure?

jarkob wrote:Right now my Rpis are occupied for the weekend, but I'll try it next week.
Great. I'll be waiting eagerly. If a corruption occur; please make a raw image copy of the entire SD card so I can analyze it.
by rln
Fri Jun 17, 2016 5:47 pm
Forum: Troubleshooting
Topic: How to corrupt SD-Card for sure?
Replies: 26
Views: 5504

Re: How to corrupt SD-Card for sure?

Can you elaborate? What is your best solution so far? I tried Alpine Linux, which completely loads into RAM and should be safer. My solution is (of course) Nard Linux which loads completely into RAM as well. http://www.arbetsmyra.dyndns.org/nard/ You are most welcome to try the example image. If yo...
by rln
Fri Jun 17, 2016 1:13 pm
Forum: Troubleshooting
Topic: How to corrupt SD-Card for sure?
Replies: 26
Views: 5504

Re: How to corrupt SD-Card for sure?

I've been doing lots of work in the same field. To my knowledge, read-only helps but is not perfect. I go even one step further. For me, the ultimate goal is not destroying the SD-card :mrgreen: But having a pi that survives the worst circumstances, since I had a lot of trouble with corrupted SD-car...
by rln
Tue Jun 14, 2016 9:12 am
Forum: Advanced users
Topic: Automating RPi testing
Replies: 4
Views: 3175

Re: Automating RPi testing

Hi David My Nard project offers in large parts what you need. It has an online cloud testing service designed with CI in mind. You simply upload an image and it's get tested - on a real Raspberry! Every upload erase the SD card completely so you always start from virgin state. $ make # cross compile...
by rln
Wed Jun 01, 2016 11:07 am
Forum: Interfacing (DSI, CSI, I2C, etc.)
Topic: Pi as Artnet or DMX receiver?
Replies: 11
Views: 6015

Re: Pi as Artnet or DMX receiver?

I was thinking that OLA could receive over Ethernet. I haven't used DMX or OLA myself but generally speaking it shouldn't be a problem. You haven't told us what are the timing requirements but I guess it's in ms range. If you use a Pi 2 or 3 you can divide your work on separate cores.
by rln
Wed Jun 01, 2016 9:47 am
Forum: Interfacing (DSI, CSI, I2C, etc.)
Topic: Pi as Artnet or DMX receiver?
Replies: 11
Views: 6015

Re: Pi as Artnet or DMX receiver?

What about Open Lighting Architecture (OLA)?
http://docs.openlighting.org/ola/doc/la ... orial.html
by rln
Wed May 18, 2016 10:37 am
Forum: Other projects
Topic: Rackmount mounting
Replies: 2
Views: 21187

Re: Rackmount mounting

What about the BitScope Blade rack?
http://www.bitscope.com/product/BB04/

P.S. For such a system I would recommend my OS Nard. It's created for industrial embedded. :)
http://www.arbetsmyra.dyndns.org/nard/
by rln
Wed May 04, 2016 2:19 pm
Forum: General discussion
Topic: Functional safety with Pi
Replies: 16
Views: 3156

Re: Functional safety with Pi

eci wrote:Is there any restriction known that prevent the use in FS applications?
I've collected all such information I've came across in the subject on my site. Not much, but at least something:
http://www.arbetsmyra.dyndns.org/nard/a ... eliability
by rln
Fri Apr 29, 2016 10:00 am
Forum: Advanced users
Topic: Can't run things involving serial at boot?
Replies: 10
Views: 1508

Re: Can't run things involving serial at boot?

Can't figure out how to make it work correctly. Also, I need a really basic implementation. Here is a copy of ser2net.conf from my Nard project. Connect with telnet to port 10000 or 9000 for "raw". BANNER:banner1:Serial port: \d (\B)\r\n SIGNATURE:signatureA0:Serial port ttyAMA0 SIGNATURE:signature...
by rln
Thu Apr 28, 2016 8:47 am
Forum: Advanced users
Topic: Can't run things involving serial at boot?
Replies: 10
Views: 1508

Re: Can't run things involving serial at boot?

What about using "ser2net" instead? A dedicated application for serial <-> TCP/IP
by rln
Thu Apr 21, 2016 8:38 am
Forum: Troubleshooting
Topic: Prevent SD-Card Corruption
Replies: 241
Views: 243953

Re: Prevent SD-Card Corruption

expand on "Automatic repair of SD-card filesystems in the event of power loss during writing"? Have you had much success with this First of all Nard tries to prevent all SD card writes. It's only during an OS upgrade writes do occur and during this processes care is taken to write things in an orde...

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