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by on Jan.06, 2016, under 3D Printing, Hardware


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3D Printing

by on Aug.25, 2014, under 3D Printing, Arduino, Hardware


So off and on over the last few weeks , I have been dabbling around with 3D printing. cialis for sale usa

A few years back, I started to build a RepRap Prusa Mendel i1. I ran into issues and put it on the back burner.

Recently, I purchased the QUBD OneUp from Quintessential Universal Building Device. Despite the company being VERY slow at shipping, and constantly missing shipping deadlines, the printer itself is a decent entry level printer.  I was able to re-kindle my joy for 3D printing. Since getting the OneUp working, I have made a few enhancements, listed on my thingiverse profile, as well as had problems with my printrboard, as posted on the fabric8r forums. order cialis

Over the next few weeks, and probably months, I will be attempting to get my Prusa Mendel working again, making new and fun things, printing upgrades, and hopefully positing about all of it. how long will 100mg viagra last

One of the long term goals with this that I have is to do some community events with intro to 3d printing. where can you buy viagra

Just thought I would post a little update on what I have been doing lately, when I am not doing system upgrades for work!

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murmurd 1.2.8

by on Aug.24, 2014, under How-to, Linux, Software


Hello world!

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murmurd 1.2.5

by on Feb.17, 2014, under How-to, Linux, Software


Announced a few weeks ago, version 1.2.5 of the mumble client and server were released. There were a few security fixes and they urge everyone to upgrade.

By the request of a few of my readers, I have created the .spec and .rpm for my implementation for 1.2.5!

If you are running my version of the 1.2.3a instance, I suggest checking out my last post on the upgrade process to 1.2.4.

If you are running my version 1.2.4 instance, well then read on, because the upgrade is even simpler this time!

As noted last time, the .spec file is located on my github at and EPEL is still required for this install as well.

New installation

After verifying that you have the EPEL repo installed, just install the RPM!

[root@server ~]# yum --nogpgcheck --enablerepo=epel install investigate this site.rpm
  mumble-server.i386 0:1.2.5-DrD


Setting up the super password for the first time

[root@server~]# /usr/local/sbin/murmurd -ini /opt/mumble-server/mumble-server-default.ini -supw <new password>

Now start the server

[root@server ~]# /etc/init.d/mumble-server start
Starting mumble-server:                                    [  OK  ]

At this time, you may need to punch a hole in the firewall.

This setting will vary from system to system, but for common firewall settings, this should work

[root@server ~]# iptables -A INPUT -p tcp -m tcp --dport 64738 -j ACCEPT
[root@server ~]# iptables -A INPUT -p udp -m udp --dport 64738 -j ACCEPT
[root@server ~]# /etc/init.d/iptables save
iptables: Saving firewall rules to /etc/sysconfig/iptables:[  OK  ]
[root@server ~]# /etc/init.d/iptables restart
iptables: Setting chains to policy ACCEPT: filter          [  OK  ]
iptables: Flushing firewall rules:                         [  OK  ]
iptables: Unloading modules:                               [  OK  ]
iptables: Applying firewall rules:                         [  OK  ]

Upgrading from 1.2.4

make sure you have a backup of your working configuration!

Stop the server and Backup!

[root@server ~]# /etc/init.d/mumble-server stop
Shutting down mumble-server:                               [  OK  ]
[root@server ~]# tar czvpf /tmp/mumble124-$(date +%Y%m%d).tar.gz /opt/mumble-server/
tar: Removing leading `/' from member names

Upgrade the RPM

[root@server ~]# yum --nogpgcheck --enablerepo=epel upgrade
  mumble-server.i386 0:1.2.5-DrD


Start the server and test

[root@server ~]# /etc/init.d/mumble-server start
Starting mumble-server:                                    [  OK  ]

Now after the installation or upgrade, make sure to connect your client to the server to make sure things [still] work.

That should be all there is.  If you run into any issues, drop a comment with the error, and I will try to help!

Starting service at system startup

If you want the service to start upon server startup/reboot, then add to the rc init system

[root@server~]# chkconfig --add mumble-server

The mumble server should now start automatically!

Updated 02/18/2014 – Adding in command for first time supw setting and firewall rules

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Installing murmurd 1.2.4

by on Jun.06, 2013, under How-to, Linux, Software


This is a follow up to my previous post, Installing murmurd the mumble voice server. using levitra and cialis together

These instructions were written for CentOS 5.x/6.x, and for my personal setup (per my previous instructions).

I wish to convey the thought that any instructions, system changes, or RPM packages should be performed or installed at your own will, and I shall not be held responsible for any damage or problems that arise from performing the below instructions!

Please note that the RPM below was compiled on CentOS 6.3 and is currently known to be able to be installed and working on CentOS 6.3 and CentOS 5.7.

If you are doing a new installation with my RPM, just install it and start it!  If you are upgrading from my previous installation instructions, look below for the upgrade instructions.

If you would like to view the spec file used to create the RPM, you can do so on my github account can i get cialis from a walk in clinic

UPDATE!: You will need to have the Fedora EPEL yum repository installed for this to work correctly.
Install the package for your system from the site

Install a new instance

Install the RPM

yum --nogpgcheck --enablerepo=epel install

Note if this does not work, you may need to wget the file and install from the local filesystem

cd /tmp/; wget generic doxycycline Online.2.4/mumble-server-1.2.4-DrD.i386.rpm
yum --nogpgcheck --enablerepo=epel install ./mumble-server-1.2.4-DrD.i386.rpm

Set superuser password

/usr/local/sbin/murmurd -ini /opt/mumble-server/mumble-server-default.ini -supw

Start the service

/etc/init.d/mumble-server start



Upgrading from my 1.2.3 instructions are simple and quick! buy viagra tescos

Stop the running server

/etc/init.d/mumble-server stop

Create backup structure

I strongly suggest making sure these are stored somewhere outside of tmp if you want to revert down the road

mkdir -p /tmp/mumble-server-backup-1.2.3/{sbin,logrotate,etc,db}

Backup the files

mv /usr/local/sbin/murmurd /tmp/mumble-server-backup-1.2.3/sbin/
mv /etc/mumble-server.ini /etc/rc.d/init.d/mumble-server /tmp/mumble-server-backup-1.2.3/etc/
mv /etc/logrotate.d/mumble-server /tmp/mumble-server-backup-1.2.3/logrotate/
mv /var/lib/mumble-server/mumble-server.sqlite /tmp/mumble-server-backup-1.2.3/db/

Restore files for new version

mkdir -p /opt/mumble-server/
cp /tmp/mumble-server-backup-1.2.3/db/mumble-server.sqlite /opt/mumble-server/mumble-server-123upgrade.sqlite
cp /tmp/mumble-server-backup-1.2.3/etc/mumble-server.ini /opt/mumble-server/mumble-server-123_old.ini
cat /opt/mumble-server/mumble-server-123_old.ini | sed \
  -e 's,^database=.*,database=/opt/mumble-server/mumble-server-123upgrade.sqlite,g' \
  > /opt/mumble-server/mumble-server-default.ini


rm -rf /var/lib/mumble-server
chown -R mumble-server:mumble-server /opt/mumble-server/

Install new version

Note some extra packages may be needed, and should be pulled in automatically.
If they are not, make sure you install the rpmforge repo

yum --nogpgcheck install

Note if this does not work, you may need to wget the file and install from the local filesystem

cd /tmp/; wget
yum --nogpgcheck --enablerepo=epel install ./mumble-server-1.2.4-DrD.i386.rpm

I would highly suggest to update your ini with the example (/opt/mumble-server/mumble-server.ini.example)

Otherwise, at this point, you should be able to start up and go!

/etc/init.d/mumble-server start

At this point, you should have the package installed and hopefully working.

Drop me a comment if you have any questions or problems and I can try to help!

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Burning Arduino bootrom on an ATmega328-PU, part 2

by on Apr.08, 2012, under Arduino, Hardware


A recent comment on Burning Arduino bootrom on an ATmega328-PU had asked for some specific stuff, so instead of updating the existing post, I figured I would make a new one to expand on the data. cialis 20 mg effetti

First off, the guide I was using is located at  The pinout of the ATmega328-PU chip (as all is the same for the ATmega168, and ATmega328P-PU and similar chips) is as follows:

Atmega 168 Pin Map

So to answer the question, VCC is on AT Pin 20, and/or AT Pin7. the arduino writeup shows both VCC lines and both GND lines being connected, so I did both as well. comprare cialis 5 mg line

Between the breadboard and the solderboard design, I did make a small change.  Mainly I added the resister, caps, and external crystal for external clocking, instead of using the internal clock.

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Again I had made some config changes in my boards.txt files, mainly splitting them up, but this is my config as it stands. cialis coupon

Avrdude.conf:  (<a title="avrdude.conf" href=" more helpful hints.conf” target=”_blank”>download full file here)

# ATmega328 (non-picopower)

    id            = "m328";
    desc        = "ATMEGA328";
    has_debugwire    = yes;
    flash_instr        = 0xB6, 0x01, 0x11;
    eeprom_instr    = 0xBD, 0xF2, 0xBD, 0xE1, 0xBB, 0xCF, 0xB4, 0x00,
              0xBE, 0x01, 0xB6, 0x01, 0xBC, 0x00, 0xBB, 0xBF,
              0x99, 0xF9, 0xBB, 0xAF;
    stk500_devcode    = 0x86;
    # avr910_devcode    = 0x;
    signature        = 0x1e 0x95 0x14;
    pagel        = 0xd7;
    bs2            = 0xc2;
    chip_erase_delay    = 9000;
    pgm_enable = "1 0 1 0 1 1 0 0 0 1 0 1 0 0 1 1",
         "x x x x x x x x x x x x x x x x";

    chip_erase = "1 0 1 0 1 1 0 0 1 0 0 x x x x x",
         "x x x x x x x x x x x x x x x x";

    timeout    = 200;
    stabdelay    = 100;
    cmdexedelay    = 25;
    synchloops    = 32;
    bytedelay    = 0;
    pollindex    = 3;
    pollvalue    = 0x53;
    predelay    = 1;
    postdelay    = 1;
    pollmethod    = 1;

    pp_controlstack =
    0x0E, 0x1E, 0x0F, 0x1F, 0x2E, 0x3E, 0x2F, 0x3F,
    0x4E, 0x5E, 0x4F, 0x5F, 0x6E, 0x7E, 0x6F, 0x7F,
    0x66, 0x76, 0x67, 0x77, 0x6A, 0x7A, 0x6B, 0x7B,
    0xBE, 0xFD, 0x00, 0x01, 0x00, 0x00, 0x00, 0x00;
    hventerstabdelay    = 100;
    progmodedelay    = 0;
    latchcycles        = 5;
    togglevtg        = 1;
    poweroffdelay    = 15;
    resetdelayms    = 1;
    resetdelayus    = 0;
    hvleavestabdelay    = 15;
    resetdelay        = 15;
    chiperasepulsewidth    = 0;
    chiperasepolltimeout = 10;
    programfusepulsewidth = 0;
    programfusepolltimeout = 5;
    programlockpulsewidth = 0;
    programlockpolltimeout = 5;

    memory "eeprom"
    paged        = no;
    page_size    = 4;
    size        = 1024;
    min_write_delay = 3600;
    max_write_delay = 3600;
    readback_p1    = 0xff;
    readback_p2    = 0xff;
    read = " 1 0 1 0 0 0 0 0",
           " 0 0 0 x x x a9 a8",
           " a7 a6 a5 a4 a3 a2 a1 a0",
           " o o o o o o o o";

    write = " 1 1 0 0 0 0 0 0",
              " 0 0 0 x x x a9 a8",
        " a7 a6 a5 a4 a3 a2 a1 a0",
        " i i i i i i i i";

    loadpage_lo = " 1 1 0 0 0 0 0 1",
              " 0 0 0 0 0 0 0 0",
              " 0 0 0 0 0 0 a1 a0",
              " i i i i i i i i";

    writepage = " 1 1 0 0 0 0 1 0",
            " 0 0 x x x x a9 a8",
            " a7 a6 a5 a4 a3 a2 0 0",
            " x x x x x x x x";

    mode        = 0x41;
    delay        = 20;
    blocksize    = 4;
    readsize    = 256;

    memory "flash"
    paged        = yes;
    size        = 32768;
    page_size    = 128;
    num_pages    = 256;
    min_write_delay = 4500;
    max_write_delay = 4500;
    readback_p1    = 0xff;
    readback_p2    = 0xff;
    read_lo = " 0 0 1 0 0 0 0 0",
          " 0 0 a13 a12 a11 a10 a9 a8",
          " a7 a6 a5 a4 a3 a2 a1 a0",
          " o o o o o o o o";

    read_hi = " 0 0 1 0 1 0 0 0",
          " 0 0 a13 a12 a11 a10 a9 a8",
          " a7 a6 a5 a4 a3 a2 a1 a0",
          " o o o o o o o o";

    loadpage_lo = " 0 1 0 0 0 0 0 0",
              " 0 0 0 x x x x x",
              " x x a5 a4 a3 a2 a1 a0",
              " i i i i i i i i";

    loadpage_hi = " 0 1 0 0 1 0 0 0",
              " 0 0 0 x x x x x",
              " x x a5 a4 a3 a2 a1 a0",
              " i i i i i i i i";

    writepage = " 0 1 0 0 1 1 0 0",
            " 0 0 a13 a12 a11 a10 a9 a8",
            " a7 a6 x x x x x x",
            " x x x x x x x x";

    mode        = 0x41;
    delay        = 6;
    blocksize    = 128;
    readsize    = 256;


    memory "lfuse"
    size = 1;
    min_write_delay = 4500;
    max_write_delay = 4500;
    read = "0 1 0 1 0 0 0 0 0 0 0 0 0 0 0 0",
           "x x x x x x x x o o o o o o o o";

    write = "1 0 1 0 1 1 0 0 1 0 1 0 0 0 0 0",
              "x x x x x x x x i i i i i i i i";

    memory "hfuse"
    size = 1;
    min_write_delay = 4500;
    max_write_delay = 4500;
    read = "0 1 0 1 1 0 0 0 0 0 0 0 1 0 0 0",
           "x x x x x x x x o o o o o o o o";

    write = "1 0 1 0 1 1 0 0 1 0 1 0 1 0 0 0",
              "x x x x x x x x i i i i i i i i";

    memory "efuse"
    size = 1;
    min_write_delay = 4500;
    max_write_delay = 4500;
    read = "0 1 0 1 0 0 0 0 0 0 0 0 1 0 0 0",
           "x x x x x x x x x x x x x o o o";

    write = "1 0 1 0 1 1 0 0 1 0 1 0 0 1 0 0",
              "x x x x x x x x x x x x x i i i";

    memory "lock"
    size = 1;
    min_write_delay = 4500;
    max_write_delay = 4500;
    read = "0 1 0 1 1 0 0 0 0 0 0 0 0 0 0 0",
           "x x x x x x x x x x o o o o o o";

    write = "1 0 1 0 1 1 0 0 1 1 1 x x x x x",
              "x x x x x x x x 1 1 i i i i i i";

    memory "calibration"
    size = 1;
    read = "0 0 1 1 1 0 0 0 0 0 0 x x x x x",
           "0 0 0 0 0 0 0 0 o o o o o o o o";

    memory "signature"
    size = 3;
    read = "0 0 1 1 0 0 0 0 0 0 0 x x x x x",
           "x x x x x x a1 a0 o o o o o o o o";

boards.txt: (download files for breadboard and custom 328-PU Uno/Duemilanove)

# this snip is only of my custom changes for the uno/duemilanove, check the files for both breadboard data and custom full files.

###  Duemilanove atmega328-pu (non-picopower)[loclhst] Arduino Duemilanove w/ ATmega328-PU (non-picopower)



### Uno atmega238-PU (non-picopower)[loclhst] Arduino Uno (non-picopower)

Also in my testing, I found I needed to copy the bootloaders (arduino-1.0\hardware\arduino\bootloaders) folder to my custom folder for the ROMs I was burning.

I am also using a adafruit FTDI Friend for my arduino to PC communications with the Arduino 1.0 software.

With the above data, I have been able to successfully burn the Uno and Duemilanove ROMs with an external crystal, as well as the Duemilanove ROM on breadboard with the internal 8mHz crystal. can you buy viagra from a chemist

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Burning Arduino bootrom on an ATmega328-PU

by on Mar.31, 2012, under Arduino, Hardware, How-to


Like many people, I purchased a handful of the ATmega328-PU microprocessor chips, not realizing there are two, the ATmega328P-PU and ATmega328-PU.  Note the additional P in the first, which stands for picopower; in other words, it has better power consumption.

Well, since most of the arudino stuff is designed around flashing the 328P-PU chip, there are some modifications to be made to a few files to allow you to do this.  However the current instructions have you CHANGE the 328P-PU, then change it back. This does not fly for me, because I may be going between various systems, or not remember to change it back, so my solution, was to add additional support for the 328-PU chip, on top of the 328P-PU chip!

Without changing anything, you will get an error similar to

Expected signature for ATMEGA328P is 1E 95 0F Double check chip, or use -F to override this

The normal solution, provided by a number of places is to edit the avrdude.conf file, then change the signature for the ATMEGA328P chip from 0x1e 0x95 0x0F to 0x1e 0x95 0x14. [Google Search].

My solution is the copy the ATMEGA328P section, and rename the copy to ATMEGA328, then change the signature on this.  the avrdude.conf file should be located in the Arduino director, under hardware/tools/avr/etc. Remember to always make a back up of any file you edit!

Next up, you will need to replicate the Board/Hardware settings, changing the value for the mcu entry.

Since we do not want to edit the hardware.txt file directly, as this does not get saved between versions, you will want to go to your sketch folder, and make a sub folder called “hardware”, within this folder, have another sub folder called “breadboard”, and within this folder, you want a file called hardware.txt, which will contain our data.

For example, if you will be using “Arduino Duemilanove w/ ATmega328”, you will want to add an entry of:

# atmega328-pu (non-picopower) Duemilanove w/ ATmega328 (non-picopower)



Notice, I added in drd to add the atmega328.* lines, the .name field has been changed, and the .mcu line has been changed to atmega328, which is the same name I used in the avrdude.conf file.

In my case, since I am using a breadboard to program, and not using an external crystal [ArduinoISP on a Breadboard], I am using an add on breadboard hardware.txt entry which was recommended from the Arduino website.

This should only be required when installing the bootrom, using the standard hardware selection, I am able to upload without any issues.

If all goes okay, you should now have a working ArduinoISP and similar that can flash the ATmega328-PU chips with no issues!

ArduinoISP on a Breadboard


Update: 2012-04-07

Here is the completed ArduinoISP on a solder board. Though the last image is missing one piece…10 points goes to who finds it..

Arduino-Like board pt 1Arduino-Like board pt 2Arduino-Like board pt 3

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Making an Arduino-Like Board

by on Mar.31, 2012, under Arduino, Hardware, How-to


Recently, I have been getting into the whole Arduino [] micro controller scene.  It is a fun platform that combines electronics as well as programming into one device that allows you do do various tasks. cialis generic

I had recently attended a few Arduino learning courses at a local hackerspace, Pumping Station: One [], which allowed me to build my own Arduino-like board. usa viagra sales

<img src=" over at this website.47.jpg?m=1330236873″ alt=”Arduino-Like board” width=”200″ height=”120″ /> generic cialis overnight shipping

If you would like to see the schematic for this, you should visit Ed Bennett’s Website at


Taking this a step further, I decided to order parts to make a few more boards, and later try my luck at an ArduinoISP setup. After following the guide from the above setup, I was able to make an Arduino-Like board on a breadboard.

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So, I am now able to run Blink on my Boarduino!

Next up…turning it into an ArduinoISP, and flashing my own chip! can you get viagra from the chemist

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Hacked By Shade

by on Jan.09, 2012, under How-to, Linux, Software


Hacked By Shade

Hacked By Shade


GreetZ : Prosox & Sxtz

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