Posted by jpluimers on 2017/03/30
I tried to power both Raspberry B+ and Raspberry 2 B devices via the USB ports of both a Fritz!Box 7490 and Fritz!Box 7360.
At first this works, but the Raspberry B+ devices over time would become unstable: not being able to ping and/or boot.
So below are some links on power requirements and powering Raspberry Pi A, B, A+, B+, 2B and zero.
Fazit/TL;DR: use an external power supply when available.
Posted in *nix, Development, Fritz!, Fritz!Box, Hardware Development, Internet, Linux, openSuSE, Power User, Raspberry Pi, SuSE Linux | Leave a Comment »
Posted by jpluimers on 2017/03/30
Some links that helped me getting FTDI USB serial communication to Raspberry Pi systems going:
–jeroen
Posted in Apple, Communications Development, Development, Hardware Development, Hardware Interfacing, iMac, Legacy Ports: COM, Mac, Mac OS X / OS X / MacOS, MacBook, MacBook Retina, MacBook-Air, MacBook-Pro, MacMini, OS X 10.10 Yosemite, OS X 10.9 Mavericks, Power User, Raspberry Pi, USB | Leave a Comment »
Posted by jpluimers on 2017/03/24
Every time I logged onto a freshly installed Rasbian system (Debian Jessie), I had this message:
The programs included with the Debian GNU/Linux system are free software; the exact distribution terms for each program are described in the individual files in /usr/share/doc/*/copyright. Debian GNU/Linux comes with ABSOLUTELY NO WARRANTY, to the extent permitted by applicable law. Last login: Sat Aug 27 19:52:33 2016 from 192.168.171.24 -bash: warning: setlocale: LC_ALL: cannot change locale (en_US.UTF-8) -bash: warning: setlocale: LC_ALL: cannot change locale (en_US.UTF-8) -bash: warning: setlocale: LC_ALL: cannot change locale (en_US.UTF-8)
Asking for the locale settings would give this:
jeroenp@raspberrypi:~ $ locale locale: Cannot set LC_CTYPE to default locale: No such file or directory locale: Cannot set LC_MESSAGES to default locale: No such file or directory locale: Cannot set LC_ALL to default locale: No such file or directory LANG=en_GB.UTF-8 LANGUAGE= LC_CTYPE="en_US.UTF-8" LC_NUMERIC="en_US.UTF-8" LC_TIME="en_US.UTF-8" LC_COLLATE="en_US.UTF-8" LC_MONETARY="en_US.UTF-8" LC_MESSAGES="en_US.UTF-8" LC_PAPER="en_US.UTF-8" LC_NAME="en_US.UTF-8" LC_ADDRESS="en_US.UTF-8" LC_TELEPHONE="en_US.UTF-8" LC_MEASUREMENT="en_US.UTF-8" LC_IDENTIFICATION="en_US.UTF-8" LC_ALL=en_US.UTF-8
Searching for raspbian jessie “-bash: warning: setlocale: LC_ALL: cannot change locale (en_US.UTF-8)” I found fix locale issue #15 · scaleway/image-debian@543e9b4 [WayBack] that fixes Locale issue on Debian Jessie · Issue #15 · scaleway/image-debian · GitHub [WayBack]:
When logging into to a freshly booted debian jessie image:
-bash: warning: setlocale: LC_ALL: cannot change locale (en_US.UTF-8)
-bash: warning: setlocale: LC_ALL: cannot change locale (en_US.UTF-8)Source: Locale issue on Debian Jessie · Issue #15 · scaleway/image-debian
I changed the crux of that solution to this one:
echo "en_US.UTF-8 UTF-8" >> /etc/locale.gen && locale-gen
When running, it showed this:
# echo "en_US.UTF-8 UTF-8" >> /etc/locale.gen && locale-gen Generating locales (this might take a while)... en_GB.UTF-8... done en_US.UTF-8... done Generation complete.
And logging this:
The programs included with the Debian GNU/Linux system are free software;
the exact distribution terms for each program are described in the
individual files in /usr/share/doc/*/copyright.Debian GNU/Linux comes with ABSOLUTELY NO WARRANTY, to the extent
permitted by applicable law.
Last login: Sat Aug 27 20:26:34 2016 from 192.168.171.24
Problem solved: 1 line of code!
–jeroen
Posted in *nix, Arduino, Debian, Development, Hardware Development, Linux, Power User, Raspberry Pi, Raspbian | 1 Comment »
Posted by jpluimers on 2017/03/02
Interesting: [Archive.is] KPN LoRa om Van Raam fietsen te traceren Zakelijk KPN Forum via [WayBack] Nederlands bedrijf komt met narrowband-internet-of-things-ontwikkelbordje – Computer – Nieuws – Tweakers
–jeroen
Posted in Arduino, Development, Hardware Development, Hardware Interfacing | Leave a Comment »
Posted by jpluimers on 2017/02/28
Great tip from Nelis Willers:
230 V safety on the work bench.Put your power supply in an old tablet container. The high voltage is safely encapsulated and will not accidentally touch something. Of course don’t do this for a kW supply, only where low heat is generated, otherwise you might set a fire!
Source: 230 V safety on the work bench. Put your power supply in an old tablet container…
Posted in Development, Hardware Development, LifeHacker, Power User | Leave a Comment »
Posted by jpluimers on 2017/02/27
There are many single-board computers on the OpenSuSE hardware-compatibility list (HCL), including:
A lot of them have ready to go images, often for Tumbleweed, however none of the pages explain the below image differences hence the one-line for each:
Since I wanted a headless system, JeOS was what I needed.
As it wasn’t available for my ODroid C1+ but was for my Raspberry Pi 2 and as my main machine is a 15″ Retina MacBook Pro Late 2013 [WayBack] below are the steps I used to get the image working.
The below Raspberry Pi2 link will redirect to the correct image in the generic download directory http://download.opensuse.org/repositories/devel:/ARM:/Factory:/Contrib:/RaspberryPi2/images/
For other Raspberry Pi versions, you can find them here:
I installed on a 8 gigabyte SD card that revealed itself as /dev/disk1 using this diskutil command (via osx – List all devices connected, lsblk for Mac OS X – Ask Different [WayBack])
diskutil list
So this wrote the image to SD card in a sudo su - prompt:
targetDevice="disk2"
unxz --keep openSUSE-Tumbleweed-ARM-JeOS-raspberrypi2.armv7l-2016.08.20-Build2.1.raw.xz; \
diskutil umount "/dev/${targetDevice}s1"; \
dd bs=1m of="/dev/r${targetDevice}" if=openSUSE-Tumbleweed-ARM-JeOS-raspberrypi2.armv7l-2016.08.20-Build2.1.raw; \
sync; \
diskutil list; \
diskutil eject "/dev/${targetDevice}"
or if you want to select which image to “burn”:
targetDevice="disk2"
imageName="openSUSE-Tumbleweed-ARM-JeOS-raspberrypi2.armv7l-2016.08.20-Build2.1.raw"
imageName="openSUSE-Tumbleweed-ARM-JeOS-raspberrypi.armv6l-2016.11.23-Build2.22.raw"
imageName="openSUSE-Tumbleweed-ARM-JeOS-raspberrypi3.aarch64-2017.01.12-Build3.2.raw"
unxz --keep ${imageName}.xz; \
diskutil umount "/dev/${targetDevice}s1"; \
dd bs=1m of="/dev/r${targetDevice}" if=${imageName}; \
sync; \
diskutil list; \
diskutil eject "/dev/${targetDevice}"
A few notes:
Posted in *nix, Development, Hardware, Hardware Development, Linux, Odroid, openSuSE, Power User, Raspberry Pi, Single-Board Computers, SuSE Linux, Tumbleweed | 1 Comment »
Posted by jpluimers on 2017/02/23
Posted in Development, Hardware Development | Leave a Comment »
Posted by jpluimers on 2017/02/17
Interesting board: [WayBack] Supermicro A2SAV mini-ITX Board Powered by Intel Atom E3940 SoC Features 6 SATA Ports, Dual GbE, and Up to 9 USB Interfaces
All below pictures from www.cnx-software.com
Could for IoT hardware and software development.
via: [WayBack] http://www.cnx-software.com/2017/02/06/supermicro-a2sav-mini-itx-board-powered-by-intel-atom-e3940-soc-features-6-sata-ports-dual-gbe-and-up-to-9-usb-in… – Joe C. Hecht – Google+
–jeroen
Posted in Development, Hardware Development, Power User, Software Development | Leave a Comment »
Posted by jpluimers on 2017/02/07
Thanks Mathijs ter Woord for letting me know this: Get a code signing certificate – Windows 10 hardware dev
Posted in Development, Hardware Development | Leave a Comment »
Posted by jpluimers on 2017/01/30
Urs Gaudenz manufactures Open.Theremin kits using his do it yourself pick and place machine which he built from low cost scanner, ink jet printer, DVD player mechanics and some Arduino controlling. Even his solder oven is Arduino controlled!
This is months of work showing a work flow in a 11 minute youtube video. Well done!
via:
Video:
Posted in Arduino, Development, Geeky, Hardware Development | Leave a Comment »
The Wiert Corner - irregular stream of stuff 