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by rln
Wed Aug 22, 2018 8:38 am
Forum: Other
Topic: Help with testing Nard v2.0 kiosk?
Replies: 8
Views: 1801

Re: Help with testing Nard v2.0 kiosk?

I guess that makes sense. I will have to think about that. I don't have a problem with paid for or subscription software etc, but tend to prefer working on things where everyone else can also get on-board and legitimately do everything or benefit from that for free. Of cource I agree fully and that...
by rln
Tue Aug 21, 2018 2:35 pm
Forum: Other
Topic: Help with testing Nard v2.0 kiosk?
Replies: 8
Views: 1801

Re: Help with testing Nard v2.0 kiosk?

hippy wrote: I'd rather not. I can't see the problem in publishing a link if you want others to help test things.
This has only to do with the "add-on" in Nard being donationware. As compensation for helping the project with your time you of course acquire access. More info.
by rln
Tue Aug 21, 2018 11:09 am
Forum: Other
Topic: Help with testing Nard v2.0 kiosk?
Replies: 8
Views: 1801

Re: Help with testing Nard v2.0 kiosk?

I have a 3B so am happy to try that out if you point me to that image The PM feature in this forum is gone so I can't send you the link directly. And since it's an alpha test I don't want to post it publicly. Can you email me via the authors link ? Managed to get most of the prerequisite tools inst...
by rln
Tue Aug 21, 2018 10:15 am
Forum: Other
Topic: Help with testing Nard v2.0 kiosk?
Replies: 8
Views: 1801

Re: Help with testing Nard v2.0 kiosk?

Possibly. It may depend on what help you need, and how easy it is to help, given that I have absolutely zero Nard experience or exposure. My current test is mind is just downloading my prebuilt beta SD-card image and try out the browser kiosk feature in whatever information panel you may be adminis...
by rln
Tue Aug 21, 2018 9:13 am
Forum: Other
Topic: Help with testing Nard v2.0 kiosk?
Replies: 8
Views: 1801

Help with testing Nard v2.0 kiosk?

Next major release of the robust Nard SDK is approaching and this time it has gotten GUI support via the add-on! Nard can now operate in kiosk mode, with a webbrowser in full screen. Perfect for information panels, bulletin boards, railway guides etc. requiring years of service life with a minimum o...
by rln
Mon Aug 20, 2018 11:48 am
Forum: Compute Module
Topic: Mass deployment on Raspberry Compute Module 3.0
Replies: 8
Views: 2267

Re: Mass deployment on Raspberry Compute Module 3.0

Can we create a staged boot + rewrite eMMC process such that the aforementioned simple config-mgmt process always runs after power on, and based on a certain return value (or branch in logic) will go ahead and boot into an existing OS image, or instead will download, uncompress, write and then rebo...
by rln
Mon Aug 20, 2018 10:26 am
Forum: Other projects
Topic: POS On Pi (2018)
Replies: 9
Views: 4854

Re: POS On Pi (2018)

I would suggest using HTML5 and a thin client solution. Your database/business logic runs in a back end PC/cloud and the user watches a webpage in a browser running in full screen.
by rln
Mon Aug 20, 2018 9:36 am
Forum: Advanced users
Topic: Shutting down safely in a C++ program
Replies: 10
Views: 3790

Re: Shutting down safely in a C++ program

Another solution is to change OS to one that doesn't require safe shutdown at all. My Nard SDK project will survive just about any dirty power cuts and is designed for embedded systems.
http://www.nard.se/
by rln
Tue Jun 19, 2018 1:38 pm
Forum: Compute Module
Topic: CM3 module crash after ejecting sd card
Replies: 21
Views: 2863

Re: CM3 module crash after ejecting sd card

You might want to try the same test with my Nard SDK, which is specifically designed to be robust and withstand abuse. Use a regular Pi and eject the SD card during heavy writing to a test-file in /sdcard/ It should survive and recover fine.

http://www.nard.se/
by rln
Thu Mar 15, 2018 12:03 pm
Forum: Beginners
Topic: How do I make my Pi3b draw as much current as possible?
Replies: 13
Views: 2074

Re: How do I make my Pi3b draw as much current as possible?

I mentioned previously that the Pi3b was using 0.56A at 400% CPU load, I am now fairly confident my Pi can run off a 1A limit. With my screen attached, total draw is 0.86A at 400% CPU load. Have a test with my rpiburn program which is designed exactly for these kind of test: https://github.com/ronn...
by rln
Thu Dec 14, 2017 12:36 pm
Forum: Advanced users
Topic: Remotely update Pi's from Master image?
Replies: 9
Views: 2576

Re: Remotely update Pi's from Master image?

Surely there is a way to do this, But I have yet to find it. Has anyone else done something similar? One can use a distro specifically designed for this kind of task. My Nard SDK project keeps 99.99% of the distributed Pi's identical, only a few files make them unique and those are preserved during...
by rln
Thu Dec 14, 2017 12:26 pm
Forum: Advanced users
Topic: Secure Boot with RaspberryPi and Trust Zones
Replies: 9
Views: 3679

Re: Secure Boot with RaspberryPi and Trust Zones

As far as I know noone has ever gotten TrustZone to work on Raspberry. Likely the Pi Foundation is the only one with knowledge and resources to get that working. The "rest" of us has to resort to either a good-enough obfuscation solution where piracy is sufficiently difficult or a web-based cloud se...
by rln
Wed Dec 13, 2017 1:19 pm
Forum: Advanced users
Topic: Secure Boot with RaspberryPi and Trust Zones
Replies: 9
Views: 3679

Re: Secure Boot with RaspberryPi and Trust Zones

Unfortunately there is no good secure boot or copy protection for Raspberry Pi. Using a CM likely won't help since it can easily be hooked up to a PC via USB. Obfuscation is probably the only available protection mechanism.
by rln
Sat Nov 04, 2017 3:35 pm
Forum: General discussion
Topic: Raspbian with Read-only Root
Replies: 195
Views: 95257

Re: Raspbian with Read-only Root

About 0.5% get filesystem corruption sometimes for no obvious reason. But all of those has been reformated and reused successfully (one time issue).
by rln
Sat Nov 04, 2017 1:13 pm
Forum: General discussion
Topic: Raspbian with Read-only Root
Replies: 195
Views: 95257

Re: Raspbian with Read-only Root

Nard tries to eliminate the risk as far as theoretically possible having only a singe, cheap, non-volatile storage. During upgrade the filesystem is kept in a bootable state at all times (including power-cuts). However, would the filesystem anyhow become corrupt there is a safety feature which can r...
by rln
Fri Nov 03, 2017 3:49 pm
Forum: General discussion
Topic: Raspbian with Read-only Root
Replies: 195
Views: 95257

Re: Raspbian with Read-only Root

As an alternative to overlay I would to recommend my Nard SDK. It's a distro built from ground up to leave the SD-card alone as much as possible. Everything runs from RAM and it's designed for industrial embedded systems.
http://www.nard.se/
by rln
Tue Oct 24, 2017 10:44 am
Forum: Troubleshooting
Topic: HDMI earth /spike causing sd card corruption??
Replies: 14
Views: 2523

Re: HDMI earth /spike causing sd card corruption??

So if only some TVs cause problems; replace them.
by rln
Tue Oct 24, 2017 9:55 am
Forum: Troubleshooting
Topic: HDMI earth /spike causing sd card corruption??
Replies: 14
Views: 2523

Re: HDMI earth /spike causing sd card corruption??

You presume it is the hdmi, but do you really know it? If you are so sure about the hdmi, then replace the TV with a better one...
by rln
Tue Oct 24, 2017 9:35 am
Forum: Compute Module
Topic: eMMC and u-boot on custom compute module
Replies: 3
Views: 1936

Re: eMMC and u-boot on custom compute module

Q_Flash wrote:
Tue Oct 24, 2017 1:13 am
does the CM IO board 1 accept the CM 3?
Read this thread about it
viewtopic.php?f=98&t=172674
by rln
Tue Oct 24, 2017 9:25 am
Forum: Troubleshooting
Topic: HDMI earth /spike causing sd card corruption??
Replies: 14
Views: 2523

Re: HDMI earth /spike causing sd card corruption??

Can you monitor the system remotely somehow via WiFi, VPN, SSH etc? If not; install a complete spare system (except for TV) and attach a GPRS modem to it. Then you can SSH to it from remote and check system uptime, logs etc.
by rln
Mon Oct 23, 2017 5:12 pm
Forum: Troubleshooting
Topic: HDMI earth /spike causing sd card corruption??
Replies: 14
Views: 2523

Re: HDMI earth /spike causing sd card corruption??

Daveawalker wrote:
Mon Oct 23, 2017 2:59 pm
sorry cant do that it's a live system which has a problem maybe once a week /month
No problem, just send another Pi to same location. Let one of them be connected to a TV but let both run same software and get power from same wall outlet.
by rln
Thu Oct 19, 2017 9:23 am
Forum: Troubleshooting
Topic: HDMI earth /spike causing sd card corruption??
Replies: 14
Views: 2523

Re: HDMI earth /spike causing sd card corruption??

Does same issue occur if you disconnect the TV? (Watch the system uptime to detect reboots.)
by rln
Thu Oct 19, 2017 9:01 am
Forum: Raspbian
Topic: Minimal image?
Replies: 3
Views: 15959

Re: Minimal image?

Nard is another option. It's good for headless and stripped down systems.
http://www.nard.se/
by rln
Thu Oct 19, 2017 8:42 am
Forum: Beginners
Topic: SD card locked
Replies: 19
Views: 12187

Re: SD card locked

kaksi wrote:
Tue Oct 17, 2017 12:01 pm
A good idea would be to run the OS from RAM - it is possible, there is a tutorial, unfortunately too complicated for me.
Running from RAM is easy - just have a go with my Nard distro. It's designed for minimal SD card wear.
http://www.nard.se/
by rln
Wed Sep 06, 2017 9:50 am
Forum: General discussion
Topic: Loading up a RamDisk Pivot Root and shred or wipe entire sd card
Replies: 13
Views: 1595

Re: Loading up a RamDisk Pivot Root and shred or wipe entire sd card

What do I need to research to figure out how to load up a ramdisk with the minimal tools to shred or wipe an entire sd card ? You can use a distro that by default run only from RAM. My Nard SDK does this (but there are others too). http://www.arbetsmyra.dyndns.org/nard/ This command will erase and ...

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