I recently purchased "ROCK64 STEREO AUDIO DAC ADD-ON BOARD" from "PINE64-STORE".

The delivered items were different from the photos posted on the store.
So I checked the items before turning on the power.
(It can be judged at a glance that the circuit diagram that is published, and the item that arrived are different.
 Therefore, i can not discuss it on a circuit diagram basis)

As a result of the preliminary check, the following doubts came out.

When I measured the terminating resistors (R14/R15/R16/R17) used to drive the "pulse-trans",
its resistance value was 1Ω or less (actual measurement was about 0.3Ω).
In addition, "062" is printed on the chip resistor.
(It may be upside down "290", but I can not judge it, so I measured the value directly)

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As another example of implementation,
We often see the use of values of several tens of ohms, for example about 50Ω.
But, I think this value of 1Ω or less is extremely small.

● Is this the correct value intended at design time ?

And

● When using it in this state does not damage rock64 itself ?

Hello all.
What is the maximum capacity MicroSD card that the pinebook will recognise?
I see the store sells 64Gb. But can it take more?

Hi, I'm veeery happy with my ROCK64 overall and I managed to setup Nextcloud manually on it. It boots via the USB3 port. (Armbian-Stretch)
I ran into a error though, which is really ruining my day:

I wanted to set another USB Flashdrive as the cloud storage, connected on a USB2 port. It all works fine when I connect it after the ROCK64 booted.
BUT the ROCK64 woun't boot at all when a second USB drive is connected. It locks before a screen output, so I think this is not an Armbian problem.
I suspect the SPI bootloader gets confused when it can't boot from the USB2 drive and it will skip booting from the USB3 port?

What I figured out yet:
Bootdrive connected on USB3 port, Storage drive connected on a USB2 port --> bootlocks before screenoutput
Bootdrive connected to a USB2 port, Storage drive connected to the USB3 port --> it boots and works perfectly fine

Question:
Can I force the bootloader to only boot from USB3 and don't check the USB2 ports?

I want to connect a strip of neopixels to the rock64 for a project.  I plan on using this: https://github.com/jgarff/rpi_ws281x

Physical pin 33 on the pi header is open so I want to use that.  That means I need PWM.  Is that pin able to do that on the rock64 or is that on a different pin?  Do I still need to disable onboard audio or is the a raspberry pi thing?  What DMA channels are available/unused?

If these should really be multiple threads, let me know and I'll break it up.  I didn't want to risk spamming the forums with multiple posts for one issue.

Has anyone ever ordered these in bulk or is that not allowed?

I do some volunteer work with a few non-profits that serve low income families and children. All of these kids have been using Linux for about 9+ years. Many of the older kids go on to LPIC programs for their summer jobs and beyond.

I got the 11 inch Pinebook and I am loving it. I am pretty sure many of the people I serve would love them to as they use Raspberry Pi's with Raspian to complete HW assignments at the Community Centers and at their schools. They also use Ubuntu Mate in the gaming room to play games on Steam and do other multimedia stuff programs.

Would be nice to pick up a few of these for them. I have a meeting on Monday with some grant writers to see what we can do as an end of a year gift to the kids that are going on to college. Maybe these would be good for them to have as a main or fall back computer to complete assignments.

How do you lock the CPU at 1.2ghz?  I have a 1080p Pinebook running the stock OS.

Thanks.

Hi, I want a sd to emmc image for my Pinebook but it seems that there are only two options: Xenial (old) and Android (usable but not the most suitable for office tasks) at the same time the 1080 version has updated KDE Neon and everything indicates that the project is alive.

my question is, are there more sd to emmc images that I can install? And if not, can Xenial be upgraded to Bionic at least without breaking it?

I am proud to announce the Rock64 is currently clocking the best performance of the available NEMS Linux builds!

If you're unfamiliar with NEMS Linux, here's a quick description:

Quote:NEMS is the Nagios Enterprise Monitoring Server for Single Board Computers

NEMS Linux is a modern pre-configured, customized and ready-to-deploy Nagios Core image designed to run on low-cost micro computers. At its core NEMS is a lightweight Debian Stretch deployment optimized for performance, reliability and ease of use.

NEMS Linux is free to download, deploy, and use. Its development however is supported by its community of users. Please consider contributing if you can.

Did find that the media keys were missing so I did a little bit of duckduckgo to find out.    You have to add them in to ~/.config/openbox/lxde-rc.xlm under the <keyboard> section.  You find out the <keybind key=""> with the command line program xev.  Then you can configure the keys <command> with amixer (better) and pactl. 

The alsamixer commands are; XF86AudioMute = amixer -D pulse sset Master toggle, XF86AudioLowerVolume = amixer -D pulse sset Master 10%-, XF86AudioRaiseVolume = amixer -D pulse sset Master 10%+

Pavucontrole = pactl set-sink-volume @DEFAULT_SINK@ +1000 (up in % or db ending), pactl set-sink-volume @DEFAULT_SINK@ -1000 (lover),  mute = pactl set-sink-mute @DEFAULT_SINK@ toggle

Here is the modification of my ~/.config/openbox/lxde-rc.xlm
---------------------------------------------------------------
<!-- media -->
<keybind key="XF86AudioPlay">
      <action name="Execute">
          <command>smplayer</command>
      </action>
  </keybind>

<!-- hljóðstillingar -->
<keybind key="XF86Tools">
      <action name="Execute">
          <command>pavucontrol</command>
      </action>
  </keybind>

<!-- mute sbr. https://wiki.archlinux.org/index.php/Xbi...me_control -->

<keybind key="XF86AudioMute">
      <action name="Execute">
          <command>amixer -D pulse sset Master toggle</command>
      </action>
  </keybind>

<!-- hækka sbr. https://wiki.archlinux.org/index.php/Xbi...me_control -->
<keybind key="XF86AudioRaiseVolume">
      <action name="Execute">
          <command>amixer -D pulse sset Master 10%+</command>
      </action>
  </keybind>


<!-- lækka sbr. https://wiki.archlinux.org/index.php/Xbi...me_control -->
<keybind key="XF86AudioLowerVolume">
      <action name="Execute">
          <command>amixer -D pulse sset Master 10%-</command>
      </action>
  </keybind>


  <!-- Launch Task Manager with Ctrl+Alt+Del -->
  <keybind key="A-C-Delete">
      <action name="Execute">
          <command>lxtask</command>
      </action>
  </keybind>

  <!-- skjámynd  -->
  <keybind key="Print">
      <action name="Execute"><command>shutter</command></action>
  </keybind>

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Hi All,

As a long time Linux user, I am used to the Xwindows method of copy/paste (select text, middle mouse click to paste).

Is there a way to emulate the middle mouse button on the trackpad on the Pinebook 1080?

TIA

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Using KDE Neon