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Archive for the ‘Raspberry Pi’ Category

UPS PIco HV3.0 documentation not on github: “03_0x38_W_UPS PIco HV3.0.pdf”

Posted by jpluimers on 2017/10/17

I ordered a UPS PIco HV3.0 A Stack 450 Plus and it arrived without any documentation on how to solder the parts together.

So I tried searching for them: which turned mostly github based URLs.

I learned there is a bit on github:

But despite code and documentation being there, no installation instructions on how to solder the stuff together.

Luckily, they responded quickly to my tweet So I got my “UPS PIco HV3.0 A Stack 450 Plus” @ModMyPi but no assembly instructions. Where do all the non-soldered parts go when using RPi3? and a quick respons thread revealing I needed 03_0x38_W_UPS PIco HV3.0.pdf which – TADAAAA – is on Google drive and on the forums at [WayBackUPS PIco Firmware Update & Troubleshooting : Technical Support

So despite github providing an excellent platform for discussion and storing documentation, something archaic like a forum is used to store data in a disorganised way.

Too bad, as the document itself is 100+ page of invaluable documentation.

So in case of future bit-rot, here are the links:

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Posted in Development, Hardware Development, Hardware Interfacing, Raspberry Pi | Leave a Comment »

Raspberry Pi brexit – changing your locale away from GB when you’ve a different keyboard

Posted by jpluimers on 2017/10/02

A while ago I wrote about -bash: warning: setlocale: LC_ALL: cannot change locale (en_US.UTF-8) on fresh Raspbian on Raspberry

I thought my locale issues were solved and they sort of were. Until I had to logon locally and managed to get one or more of these characters in my password:

  • ~ (tilde)
  • @ (at)
  • # (hash)
  • \ (backslash)
  • | (pipe)
  • " (double-quote)

Then logon would fail locally but work via ssh. Go figure!

Lot’s of people outside the UK using their Raspberry Pi with keyboard and monitor will now say: you’ve the default GB keyboard layout and your keyboard is not GB.


This is how US keys look when using a GB keyboard layout:

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Posted in Development, Power User, *nix, Hardware Development, Linux, Raspberry Pi, Debian, Raspbian | Leave a Comment »

Oops: OF: /soc/usb at 7e980000: could not get #phy-cells for /phy

Posted by jpluimers on 2017/09/28


kvm [1]: Invalid trigger for IRQ4, assuming level low
OF: /soc/usb at 7e980000: could not get #phy-cells for /phy

Via [WayBack] Oops. – Jeroen Wiert Pluimers – Google+

This was after updating my Raspberry Pi 3 with Tumbleweed to 20170920.

Not sure what do do now. Some searches didn’t reveal much:


Posted in *nix, Development, Hardware Development, Linux, openSuSE, Power User, Raspberry Pi, SuSE Linux, Tumbleweed | Leave a Comment »

Some notes on making pi-hole work on a DHCP enabled network

Posted by jpluimers on 2017/08/24

Many networks have DHCP Manual allocation (commonly called static allocation) handing out static/fixed IP addresses over DHCP so you can centralise IP address handout based on MAC (or other attributes).

Here are some links that should me get going making my pi-hole Raspberry Pi using DHCP instead of static IP addresses.

Yucky way to set a static IP: How do I set a static IP address in Raspbian “Jessie” using /etc/dhcpcd.conf? – Pi-Hole: A Black Hole For Internet Advertisements [WayBack]


Posted in Development, Hardware Development, Power User, Raspberry Pi | Leave a Comment »

A start job is running for dev-disk-by\… – Google Photos – Jeroen Wiert Pluimers – Google+

Posted by jpluimers on 2017/08/17

Reproduction of A start job is running for dev-disk-by... – Google Photos / Oops. Let’s see if I can reproduce it, as I think this is related: https://…

Reproducible steps below.


Tried tips from last link: fails as well

These are the modifications of the steps further on based on the last link above.

  1. After first boot, verify the WiFi drivers are there:

# rpm -qa | grep bcm43xx

  1. After editing /etc/dracut.conf.d/raspberrypi_modules.conf, perform sudo mkinitrd without any -f
  2. After reboot, same error

Error result

At boot time:

A start job is running for dev-disk-by\…

After waiting:

Reproducible steps

  1. download (or a more recent one) from :
  2. Install them on a MicroSD card
  3. Put in Raspberry Pi 3 and boot
  4. Get the IP address of the machine, then SSH into it (ssh root@ip-address, password linux)
  5. Follow the steps from [WayBackopenSUSE on Raspberry Pi 3: From Zero to Functional System in a Few Easy Steps – SUSE Blog | SUSE Communities to get WiFi working:
    1. Edit /etc/dracut.conf.d/raspberrypi_modules.conf and remove the sdhci-iproc from the first and # on the last line:From :
      add_drivers+=" sdhci-iproc bcm2835-sdhost bcm2835_dma mmc_block dwc2 "
      # Workaround for Wifi
      #omit_drivers+=" sdhci-iproc"

      To :

      add_drivers+=" bcm2835-sdhost bcm2835_dma mmc_block dwc2 "
      # Workaround for Wifi
      omit_drivers+=" sdhci-iproc"
    2. Run these commands:
      mkinitrd -f
    3. Check in Yast if wlan0 exists in System -> Network Settings, then assign an SSIS plus credentials to it
      1. Verify the list contains BCM43430 WLAN card
      2. Select it
      3. Click the Edit button
      4. Put the check mark next to Dynamic Address then select DHCP and the kind of DHCP (in my caseboth version 4 and 6)
      5. Click the Next button
      6. Keep Operating Mode as Managed
      7. Click the Scan Network button
      8. Select Network Name (ESSID) from the list
      9. Select Authentication Mode from the list
      10. Put the check mark for Key Input Type as Passphrase
      11. Enter the Encryption Key
      12. Click the Next button
      13. Click the OK button
      14. Quit Yast
      15. Wait a few moments, then very with ip a that wlan0 got an IP address
  6. Update the system:
    zypper refresh
    zypper dist-upgrade
  7. Reboot
  8. Wait for the error to occur on the HDMI screen (USB keyboard does not work there, so I cannot copy logs)

Gist log until 7. is below.

IRC chat transcript opensuse-factory

10:40am<wiertIs there anyone of the dev team here with a RPi3 that can see if my steps at reproduce?
10:40amwiertTL;DR: Tumbleweed on Rpi3; enable WiFi according to site and forum instructions; zypper dist-upgrade; boot failure.
10:41amwiertwithout enabling WiFi everything is fine.
10:41amwiertspare RPi3s get in next week, so I’ll configure this one for my brother without WiFi for now.
10:43amfvogtHm, that guide can’t actually work that way (unless something changed significantly)
10:43amwiertit worked in the sense that it got WiFi working. it failed in the sense that you cannot upgrade any more (:
10:43amfvogtThe omit_drivers line removed the driver for the sd card controller, so it’s no surprise that it doesn’t boot anymore. It needs a different device tree
10:44amfvogtI guess you upgraded the kernel + DT? You must not do that
10:44amwiertfunny as after the mkinitrd, a reboot went fine.
10:44amwiertit’s only that after a zypper dup it fails.
10:44ammnowak__DimStar, I wan’t $$ only on Windows, I should not have to re-define $prompt_sign. I guess I need to move the second $prompt_sign to the if-clause below
10:45amfvogtwiert: Ah, so it ships with a WiFi enabled DT + Kernel with the TW image
10:45amfvogtIf you zypper dup then, it’ll switch to the DT + Kernel from plain TW, breaking everything
10:46amwiertWhat’s DT?
10:46amfvogtClose, device-tree
10:46amwiert(that gist has all the steps I performed)
10:46amfvogtIt contains the assignment of memory and other HW resources to each other and drivers
10:47amfvogtwiert: “dtb-broadcom  obs:// -> openSUSE”
10:47amfvogtThat’s most likely the issue
10:48amfvogtYou can recover from that by downloading the right .dtb file and putting it on the sd card manually
10:48amfvogtAlternatively, the u-boot embedded one should still work, so you can delete the DT on the SD and it should boot again (with some missing peripherals though)
10:51amwiertI’ve already put a fresh disk image on it and I’m in the midst of configuring it for my brother (he’s mentally retarded and I’m putting it behind his TV so he can view his agenda electronically to see if that gives him more stability in organising his life; I need to be at his place in 2 hours)
11:27amwiert@fvogt: I will add this part of the IRC chat to that blog post and try to get your suggestions done when the spare RPI3s get in.


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Posted in *nix, Development, Hardware Development, Linux, openSuSE, Power User, Raspberry Pi, SuSE Linux, Tumbleweed | Leave a Comment »

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