TOMEK CEDRO (CeDeROM) (SQ7MHZ) HOMEPAGE

If you want to perform stock factory flashing of a Nexus device and you encounter “fastboot too old” error message, that means you need to update your local fastboot application to a newer version. One additional word would make this interesting error message self-explanatory..

I have just found and reported bug in Android [1] that allows Bluetooth Headset to ring even though the “Do Not Disturb” is set to most strict setting that should give no symptoms of incoming calls.

[1] https://issuetracker.google.com/issues/69537851

I have added support for Panasonic ToughBook CF-F9 U3G GOBI2000 to FreeBSD U3G kernel module [1]. I have added firmware for Panasonic CF-F9 and HP EliteBook 2740p along with gobi_loader updates [2] that are required for 3G modems to work.

At first U3G module will create /dev/cuaU0 interface for QDL firmware load, then after successful firmware load device will reload itself to a modem mode and U3G module will provide additional /dev/cuaU0.* nodes for operations (/dev/cuaU0.2 is the AT command intarface).

In order for this modem to work on FreeBSD you also need to tune some configutation files:

• /etc/devd.conf:

  attach 100 {
   match "vendor" "0x04da";  #adjust your device VID
   match "product" "0x250e"; #adjust your device PID
   action "/usr/local/sbin/gobi_loader -2000 /dev/cuaU0 /boot/firmware/gobi/";
  };
  

• /etc/ppp/ppp.conf:

  default:
   set log Phase Chat LCP IPCP CCP tun command
   ident user-ppp VERSION
   set device /dev/cuaU0.2
   set phone *99\#
   set redial 5 10
   set speed 115200
   set dial "ABORT BUSY ABORT NO\\sCARRIER TIMEOUT 5 \
             \"\" AT AT-OK-AT ATH OK ATZ OK ATE1Q0 OK \
             AT+CFUN=1 OK-AT-OK \
             AT+CPIN? READY-AT+CPIN=\"YOUR_PIN_HERE\"-OK \
             AT+CGDCONT=1,\\\"ip\\\",\\\"internet\\\" OK \
             \\dATDT\\T TIMEOUT 40 CONNECT"
   set timeout 20
   enable dns
   set ifaddr 10.0.0.1/0 10.0.0.2/0 255.255.255.255 0.0.0.0
   add default HISADDR
  

You now should be able to use your 3G modem connection with ppp -ddial, after you add your local user to the dialer group with pw groupmod dialer -m your_user_name. Remember to have U3G compiled in. Enjoy the Internets! 🙂

[1] https://github.com/freebsd/freebsd/pull/115
[2] https://github.com/cederom/gobi_loader

Matplotlib is a nice Matlab-like environment for Python. If you encounter a backend related problem while using Matplotlib [1] on a Python Virtualenv [2], then you need to explicitly select one (i.e. backend : Qt5Agg) in a ~/.config/matplotlib/matplotlibrc (or directly in a matplotlib file located in current working directory) configuration file. Then remember to use modern interpreter and meet dependencies requirements. Example below:

$ mkdir ~/.matplotlib
$ echo "backend : Qt5Agg" >> ~/.config/matplotlib/matplotlibrc
$ echo "backend : Qt5Agg" >> matplotlibrc
$ python3.6 -m venv venv-mac-36
$ source venv-mac-36/bin/activate
$ which python
$ pip install matplotlib pyqt5

Now you can use Matplotlib inside created Python Virtualenv (assuming you had Python 3.6 and Qt5 [3] already installed on your system). Other backends are: TKAgg, GTKAgg, Qt4Agg, Qt5Agg, WXAgg [4].

[1] https://matplotlib.org/
[2] https://www.python.org/
[3] https://www.qt.io/
[4] https://matplotlib.org/faq/usage_faq.html

It is my great honor to join Free-and-Open-Source ARM mbed [1] development team! 🙂

[1] https://www.mbed.com

If you wonder to use Docker [1] or Travis CI [2] for build test or more advanced automation, note that these are Linux [3] only solutions and will not work with other operating systems such as FreeBSD [4]. You may want to take a look at old good Jenkins [5] for wider application possibilities 🙂

[1] https://www.docker.com/
[2] https://travis-ci.org/
[3] https://www.linux.com/
[4] https://www.freebsd.org/
[5] https://jenkins.io/

I was great pleasure to take part in European Canopy Formation [1] at SkyCamp [2] Polska 2017! So many experienced and relaxed people, so much fun, and so much development (I was part of CRW-16-DIAMOND). Thank you!! Hope to see you soon folks! 🙂

I am also happy to announce that I had become a website editor and administrator 🙂

[1] http://europeancanopyformation.eu/
[2] http://www.skycamp.pl

I am gearing up and starting a new adventure. I have just bought my own PD Lightning 176 canopy dedicated to CRW/CF [1]. Thanks to Simon and the “Lost in Space” crew first jumps were really awsome and safe. Thank you guys! 🙂

[1] https://en.wikipedia.org/wiki/Canopy_formation

It is my great pleasure to join Tixon’s IDeA mHealth project. I will develop a custom electronics towards mass market as well as create system architecture and manage project development..

I just did a self-assembly of JTAGulator. This simple and amazing device indeed works and shortens JTAG pinout search from days to seconds. AMAZING! I have some spare devices to sale cheap in EU, if you want one let me know! 🙂

JTAGulator is an open source hardware tool, created by Joe Grand / Grand Idea Studio, that assists in identifying OCD connections from test points, vias, or component pads on a target device. All you need is a target device, bunch of tap wires / cables, USB-Mini cable, and serial terminal to operate JTAGulator.

On-chip debug (OCD) interfaces can provide chip-level control of a target device and are a primary vector used by engineers, researchers, and hackers to extract program code or data, modify memory contents, or affect device operation on-the-fly. Depending on the complexity of the target device, manually locating available OCD connections can be a difficult and time consuming task, sometimes requiring physical destruction or modification of the device.