Raspberry Pi & Other SBC Computers Discussion Thread :)

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Profile Bernie Vine
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Message 1985518 - Posted: 16 Mar 2019, 18:54:07 UTC
Last modified: 16 Mar 2019, 18:55:02 UTC

Another one joins in

https://setiathome.berkeley.edu/show_host_detail.php?hostid=8687388

Just running 2 tasks at a time.

It was actually more difficult to edit the remote_hosts file for Boinc Tasks than it was to get it running.

I still hate command lines :-(
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Message 1985520 - Posted: 16 Mar 2019, 19:02:28 UTC - in response to Message 1985518.  

Another one joins in

https://setiathome.berkeley.edu/show_host_detail.php?hostid=8687388

Just running 2 tasks at a time.

It was actually more difficult to edit the remote_hosts file for Boinc Tasks than it was to get it running.

I still hate command lines :-(

Right on Bernie! :)

Have a great day! :)

Siran
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Message 1985561 - Posted: 17 Mar 2019, 4:12:33 UTC - in response to Message 1985264.  
Last modified: 17 Mar 2019, 4:14:00 UTC

So your PI's are not connecting directly to the server? I don't see them on your computer listing.

Tom

They are doing E@H work. They've been off for the last couple of weeks, just getting back into 24/7 mode now.

I fried a USB charger which was powering 4 of them. I thought I might have been pushing it a bit too much running 4 x Pi3B+ when its 30 degrees :-) Its a pity nobody has come up with a suitable power supply for running multiple Rpi demanding 2 - 2.5 amps on each connection.


I am running 4 pi using the bitscope quattro blade, connected to a UPS. Works well for me. I use a universal laptop power supply to power it.

http://www.bitscope.com/product/BB04/
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Message 1985753 - Posted: 18 Mar 2019, 12:20:09 UTC - in response to Message 1985561.  

I am running 4 pi using the bitscope quattro blade, connected to a UPS. Works well for me. I use a universal laptop power supply to power it.

http://www.bitscope.com/product/BB04/

I have a bitscope blade rack. I ran out of Pi’s to put in it.

Most of my existing Pi’s have copper heatsinks and they won’t fit into the bitscope blades so I need to get some more. I’m a bit concerned they’ll overheat once i’ve got the rack fully assembled as there isn’t much room or airflow between the Pi and the blade. I’ve got 8 of them done and they seemed to be thermal throttling as they were slower than my other Pi’s with the active cooling.
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Message 1985762 - Posted: 18 Mar 2019, 13:01:31 UTC - in response to Message 1985753.  

I am running 4 pi using the bitscope quattro blade, connected to a UPS. Works well for me. I use a universal laptop power supply to power it.

http://www.bitscope.com/product/BB04/

I have a bitscope blade rack. I ran out of Pi’s to put in it.

Most of my existing Pi’s have copper heatsinks and they won’t fit into the bitscope blades so I need to get some more. I’m a bit concerned they’ll overheat once i’ve got the rack fully assembled as there isn’t much room or airflow between the Pi and the blade. I’ve got 8 of them done and they seemed to be thermal throttling as they were slower than my other Pi’s with the active cooling.

Hi Mark,

If the Pi gets too hot a little lightening bolt will show on the taskbar. My first Pi ran with now cooling fan and the heat sink got extremely hot. That was my reason for getting the cases with fans and put my Pis in a stack build. I looked at that bitscope blade and I see no way to cool the Pis except with an external fan, let alone get to the other surface mounted connectors for purposes other than SETI. I don't think the external fan would be efficient enough to cool all the Pis.

Have a great day! :)

Siran
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Message 1985942 - Posted: 19 Mar 2019, 8:15:51 UTC

I'll post this request tonight and hope for a response tomorrow after the project returns.

Got my RPI3 today and put it together. Installed the Desktop version but not the full version of Stretch. Got it up on my Wi-Fi network in a headless installation. I can get into it with no problem via SSH but I have not been able to connect via VNC and Remmina at all. Just get an authentication error. Spent a couple of hours researching and reading of solutions to get VNC working but no luck so far. I can't figure out how to give the vncserver the correct credentials and the only solution I found was via the GUI app for vncserver. Nothing or no configuration files I tried to edit via the command line worked.

So tomorrow I am going to dig out of the closet one of my old monitors, keyboard and mouse from the contest rigs to see if I can configure stuff from the GUI Desktop.

So what is anybody using to remote into the RPI3 desktop from Linux? What was your solution and configuration?
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Message 1985946 - Posted: 19 Mar 2019, 9:01:07 UTC - in response to Message 1985942.  

I'll post this request tonight and hope for a response tomorrow after the project returns.

Got my RPI3 today and put it together. Installed the Desktop version but not the full version of Stretch. Got it up on my Wi-Fi network in a headless installation. I can get into it with no problem via SSH but I have not been able to connect via VNC and Remmina at all. Just get an authentication error. Spent a couple of hours researching and reading of solutions to get VNC working but no luck so far. I can't figure out how to give the vncserver the correct credentials and the only solution I found was via the GUI app for vncserver. Nothing or no configuration files I tried to edit via the command line worked.

So tomorrow I am going to dig out of the closet one of my old monitors, keyboard and mouse from the contest rigs to see if I can configure stuff from the GUI Desktop.

So what is anybody using to remote into the RPI3 desktop from Linux? What was your solution and configuration?


Going off memory here, but I think you have to run raspi-config and in the networking section there is an option to enable VNC.
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Message 1985947 - Posted: 19 Mar 2019, 9:14:53 UTC - in response to Message 1985942.  

I'll post this request tonight and hope for a response tomorrow after the project returns.

Got my RPI3 today and put it together. Installed the Desktop version but not the full version of Stretch. Got it up on my Wi-Fi network in a headless installation. I can get into it with no problem via SSH but I have not been able to connect via VNC and Remmina at all. Just get an authentication error. Spent a couple of hours researching and reading of solutions to get VNC working but no luck so far. I can't figure out how to give the vncserver the correct credentials and the only solution I found was via the GUI app for vncserver. Nothing or no configuration files I tried to edit via the command line worked.

So tomorrow I am going to dig out of the closet one of my old monitors, keyboard and mouse from the contest rigs to see if I can configure stuff from the GUI Desktop.

So what is anybody using to remote into the RPI3 desktop from Linux? What was your solution and configuration?


I approached my RPI's using ssh. If you use ssh -X or ssh -Y it will create a tunnel that will be used by X11. This means you can run boinc-manager and other X11 applications and the windows will show up on your Linux desktop.

Tom
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Message 1985949 - Posted: 19 Mar 2019, 10:25:07 UTC - in response to Message 1985942.  

I'll post this request tonight and hope for a response tomorrow after the project returns.

Got my RPI3 today and put it together. Installed the Desktop version but not the full version of Stretch. Got it up on my Wi-Fi network in a headless installation. I can get into it with no problem via SSH but I have not been able to connect via VNC and Remmina at all. Just get an authentication error. Spent a couple of hours researching and reading of solutions to get VNC working but no luck so far. I can't figure out how to give the vncserver the correct credentials and the only solution I found was via the GUI app for vncserver. Nothing or no configuration files I tried to edit via the command line worked.

So tomorrow I am going to dig out of the closet one of my old monitors, keyboard and mouse from the contest rigs to see if I can configure stuff from the GUI Desktop.

So what is anybody using to remote into the RPI3 desktop from Linux? What was your solution and configuration?

Hi Keith,

Wow, me helping you. who'd a thunk? :)

Do: sudo raspi-config and select Interfacing Options. Then enable VNC. From there, I cannot help. Not using VNC myself.

Have a great day! :)

Siran
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Message 1985952 - Posted: 19 Mar 2019, 10:44:53 UTC - in response to Message 1985949.  

From my Desktop notes:
sudo apt-get -y install dconf-tools
dconf write /org/gnome/desktop/remote-access/require-encryption false /usr/lib/vino/vino-server --sm-disable start

This is for a Linux System. Basically using dconf editor. I'm not sure what the Pi has/uses.
But disabling encryption via the dconf app lets you get in through VNC. Just follow the /org/gnome/desktop/remote-access/require-encryption Tree.
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Message 1985953 - Posted: 19 Mar 2019, 10:50:31 UTC

As I use Anydesk for all my other PC's so I just installed it on the Pi, works perfectly and means I only need one remote access program for Win and Linux

Anydesk install
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Message 1985993 - Posted: 19 Mar 2019, 14:33:12 UTC

VNC is enabled on rpi3. Can't make any connection to it because of authentication issues. I'll try Brent's suggestion.
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Message 1986009 - Posted: 19 Mar 2019, 19:38:18 UTC - in response to Message 1985993.  

VNC is enabled on rpi3. Can't make any connection to it because of authentication issues. I'll try Brent's suggestion.

If it is authentication issues, you need to make sure the encryption standard the server (RPi) is using is the same as the client (viewer). It can't work unless they both speak the same language. Be buried in the preference/connection GUI. (Oh and you do want newish, some of the old standards are very broken)

P.S. Don't forget to change your password on your Pi if you enable SSH. Millions out there sending the default login to every IP on the planet.
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Message 1986018 - Posted: 19 Mar 2019, 20:26:10 UTC - in response to Message 1986009.  
Last modified: 19 Mar 2019, 21:15:11 UTC

The problem was that you can't change or disable vncserver authentication from the ssh command line. Very simple to do this morning from the vncserver gui configuration menu once I hooked the pi up to a display.

Also changed the default account from pi to my own username and changed all the passwords.

Set up samba and shares like I do with all my rigs for easy file access.

Now that the project is back, time to get BOINC installed and the pi3 attached to Seti.
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Message 1986056 - Posted: 20 Mar 2019, 3:21:36 UTC

In case anybody else needs to use Remmina to access their rpi3 vncserver instance on their pi, the trick is to configure the vncserver from its gui interface in the Top bar. The Options menu has the Security settings and all you have to do to make it work with Remmina is to change the authentication protocol from default Unix password to VNC password. Apply and then restart. You don't have to change anything in your client regarding encryption with the dconf-editor after all. Just fill in the VNC password you set in the Options/Security menu in your VNC profile for the rpi3 in Remmina and you are good to go.
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Message 1986308 - Posted: 21 Mar 2019, 7:18:45 UTC - in response to Message 1985762.  
Last modified: 21 Mar 2019, 7:19:40 UTC

I am running 4 pi using the bitscope quattro blade, connected to a UPS. Works well for me. I use a universal laptop power supply to power it.

http://www.bitscope.com/product/BB04/

I have a bitscope blade rack. I ran out of Pi’s to put in it.

Most of my existing Pi’s have copper heatsinks and they won’t fit into the bitscope blades so I need to get some more. I’m a bit concerned they’ll overheat once i’ve got the rack fully assembled as there isn’t much room or airflow between the Pi and the blade. I’ve got 8 of them done and they seemed to be thermal throttling as they were slower than my other Pi’s with the active cooling.

Hi Mark,

If the Pi gets too hot a little lightening bolt will show on the taskbar. My first Pi ran with now cooling fan and the heat sink got extremely hot. That was my reason for getting the cases with fans and put my Pis in a stack build. I looked at that bitscope blade and I see no way to cool the Pis except with an external fan, let alone get to the other surface mounted connectors for purposes other than SETI. I don't think the external fan would be efficient enough to cool all the Pis.

Have a great day! :)

Siran


I found having heat sinks with an external fan (I have a cheap USB fan running next to my stacks) is enough to keep my 8 Pis (3B+) cool enough. They are generally in the 40s with each running 4 units at a time. When I just have the heat sinks, it does tend to run a little too hot and will start throttling performance.

But then I run all of them via command line and don't have to worry about a GUI to run as well.
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Message 1986355 - Posted: 21 Mar 2019, 15:40:26 UTC

Since I had absolutely no knowledge or experience with the rpi3 and I have traditionally had issues with cooling all my PC's, I went with a case supplied with heat sinks and a fan. Unit is sitting on a top shelf in my entertainment rack in a dead air corner of the living room. Unit runs at 43°C with two tasks running and the desktop. Will probably be much higher once the heat of summer is here and the house becomes a sauna even with air conditioning.

At what temp does the rpi3 throttle itself? Does it have different temps for the cpu and the gpu?
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Message 1986370 - Posted: 21 Mar 2019, 16:53:08 UTC

It does throttle itself, I think it's 80C, which is "a tad on the warm side" for my liking, so I'm adding a fan to help it stay cooler than "OUCH, that smarts" on the finger test (even with an added heatsink).
I don't think there is separate measurement on the GPU.
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Message 1986376 - Posted: 21 Mar 2019, 16:58:31 UTC - in response to Message 1986370.  

Thanks, Rob. I am worried that the big chip on the bottom side of the board, guessing that is the gpu, would be at a disadvantage for having trapped air and no airflow from the little fan blowing on the cpu heat sink on the top side of the board. There are little rubber nubbin feet on the case to give about 1/4" of clearance so only convection cooling on that chip.
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Message 1986391 - Posted: 21 Mar 2019, 18:11:25 UTC

The GPU isn't used by the SETI app, and runs quite a bit cooler than the processor chip - I suspect it gets warmed up by conduction from the CPU as the two appear to be tightly connected.
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