electronics – linux – model railroad
To get them work edit the /home/$USER/.config/openbox/lubuntu-rc.xml. Replace the commands within the <command> statements to:
<!-- Keybinding for Volume management --> <keybind key="XF86AudioRaiseVolume"> <action name="Execute"> <command>amixer -D pulse sset Master 5%+</command> </action> </keybind> <keybind key="XF86AudioLowerVolume"> <action name="Execute"> <command>amixer -D pulse sset Master 5%-</command> </action> </keybind>
If there are performance issues with Kicad and the schematics editor running on a ATI Radeon GPU hardware consider to add a xorg option in the file
/usr/share/X11/xorg.conf.d/20-radeon.conf:
Section "Device" Identifier "Radeon" Driver "radeon" Option "AccelMethod" "exa" Option "MigrationHeuristic" "greedy" Option "EXAPixmaps" "false" EndSection
The option EXAPixmaps is documented here: https://www.x.org/archive/X11R7.6/doc/man/man4/radeon.4.xhtml
Please have a look at:
http://ll.tips/llcat.network-manager-strongswan-in-ubuntu-16.04/
Please have a look at http://askubuntu.com/a/812312
and also http://askubuntu.com/questions/58584/can-i-automatically-deactivate-my-touchpad-when-a-usb-mouse-is-connected
Have you ever waited so long for an optional kernel module to compile? Yes?
Then you should add in your linux system following file:
/etc/profile.d/make.sh
The contents are:
export MAKEFLAGS=j4
With this option you tell the compiler to start 4 threads to compile. Please tune this suitable for your system!
After steaming for about ten months I was not satisfied with the industrial manufactured battery carriers. After about two months the push buttons get defect or the electronics does what it not should do.
My newest creation to solve this problem is “Dampfe V2” with documentation online!
I am proud to introduce you now my newest electronic hardware:
battCharger – a free and open hard- and software design to evaluate buck-converters charging a battery.
[more]
The hardware circuit consists foremost of a secondary switched micro-controller driven buck-converter. An Arduino Micro board controls the output levels, while it is measuring voltage, current and temperature.
The main reason to build this “monster” was that most manufacturers do not free the source code and schematics. What if a “new” battery technology is out and the manufacturer does not update it’s firmware any more?
With the battCharger no problem: Source code is available for public.
The battCharger can charge battery types like Ni-Cd, Ni-Mh, Li-ion and Lead acid. Although it is designed for charging batteries, the battCharger has a power supply mode and an electronic load mode because the main hardware design consists of a power supply.
The software is currently mostly functional and following features are implemented:
Charger mode:
Batteries are charged within given parameters: Voltage, current, capacity, cells, temperature, battery type. A security shutdown occurs if over-/undervoltage, -temperature and overcurrent is detected, or a timeout is reached.
Batteries are discharged within given parameters: Voltage, current, capacity, cells, temperature, battery type. A security shutdown occurs if over-/undervoltage, -temperature and overcurrent is detected.
The resistance is measured by discharging at 0,1C for 20 seconds and by discharging afterwards at 1C for 20 seconds. If finished, the resistance will be calculated. (DC load method, http://batteryuniversity.com/learn/article/how_to_measure_internal_resistance)
Power supply mode:
Electronic load mode:
Hardware
External data acquisition tools
The USB UART of the Arduino Micro can be grabbed with any tool understanding serial communications. A GUI is developed to inspect electrical loads, sources and batteries. Remote SSH connection is supported.
Also an email alert function is implemented.
The soft- and hardware sources are available at: http://bazaar.launchpad.net/~tuxstef/mrsd/trunk/files/head:/BattCharger/
Two PCBs were manufactured by Eurocircuits and one of them is now under stress-test. Note that a new PCB release will be publicated to patch some errors.
Further on more info will be presented onto this site.
Some summarizing word about it:
The source code is available at:
http://bazaar.launchpad.net/~tuxstef/mrsd/trunk/view/head:/fiddleyard/arduino/fy_2/fy_2.ino
And the schematics:
http://bazaar.launchpad.net/~tuxstef/mrsd/trunk/view/head:/fiddleyard/eagle/fy_2.png
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Don not forget to load the Arduino Duemilanove bootloader onto your microcontroller otherwise the serial upload and debug will not work!
At my university of applied sciences the OpenVPN-Traffic is blocked by the internal WLAN. So you could set up your OpenVPN server like this:
http://www.vpntutorials.com/tutorials/openvpn-sharing-a-port-with-a-webserver-on-port-80-443/
This sucessfully bypasses the firewall and all VPN traffic will go trough….
Hello,
I got a Faller crane without motors build in. This was not acceptable so I build in some.
Please have a look at the pictures:
[more]
…and a video:
download/mrsd/ServoGoldV2/1.mp4
The source code is available at:
http://bazaar.launch … /arduino/ServoGold_2
I used “Chinese” gear motors and cheap potentiometers with an angle of 360° because I have not found any servo motor that’s rotational speed is useable for my needs -> it seems that the industry has no interest on it…
The hot glue is optional you could also use thin metal plates for fixing the motor onto the ground plate and the potentiometer onto the motor….
Software features:
-Movement training program, 3 lists with each 16 entries
-Manual movement
-Every horizontal movement includes a regulated vertical movement
-CV support