How to restore the Arduino Bootloader? July 2, 2014
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How to restore the Arduino Bootloader?

July 2, 2014 · admin Linux Arduino Hardware
It can be easily done using Linux. This procedure is for the 328p processor. It can easily be adapted for a 168 processor. You will need an ICSP. First, make sure that avrdude is installed. It can be installed by issuing the command: sudo apt-get install avrdude You will need to retrieve the bootloader. It can be found in the hardware/arduino/bootloaders/atmega directory in the 1.0.5 Arduino IDE download. It is named ATmegaBOOT\_168\_atmega328.hex.

Parametrized Measuring Scoop

June 1, 2014 · admin 3D Printing object
This Openscad 3D object generates a measuring scoop. Simply modify the scoop volume (given in milliliters) in the Openscad file and generate the STL file. You will end up with a measuring scoop of the given volume. Other parameters can be modified such as:

PN532 Breakout Board Mounting Plate

May 30, 2014 · admin 3D Printing object
Specially designed for Adafruit's PN532 Breakout Board Mounting Plate (Product 364).

How to rename a user in Linux

May 20, 2014 · admin Ubuntu 11.10 Unix Ubuntu 11.04 Ubuntu Linux Ubuntu 12.04 Ubuntu 14.04
Simply issue this command: usermod -m -d /home/new-account-name -l new-account-name old-account-name It creates the home directory if it does not exists. It also copy the stuff of the old user into the new user account.

Enclosure For The Sparkfun RFID USB Reader

May 12, 2014 · admin 3D Printing object
This is an enclosure for the Sparkfun's RFID USB Reader (SEN-09963).

preinst: line 118: a2query: command not found

May 4, 2014 · admin Ubuntu apache Ubuntu 14.04
If you are getting the following errors while trying to install Apache on Trusty (Ubuntu 14.04), execute the commands below and try to re-install it. Preparing to unpack .../apache2_2.4.7-1ubuntu4_amd64.deb ... /var/lib/dpkg/tmp.ci/preinst: line 118: a2query: command not found dpkg: error processing archive /var/cache/apt/archives/apache2_2.4.7-1ubuntu4_amd64.deb (--unpack): subprocess new pre-installation script returned error exit status 1 Errors were encountered while processing: /var/cache/apt/archives/apache2_2.4.7-1ubuntu4_amd64.deb E: Sub-process /usr/bin/dpkg returned an error code (1) The commands to resolve this issue are: dpkg --fsys-tarfile /var/cache/apt/archives/apache2_2.4.7-1ubuntu4_amd64.deb | tar xOf - ./usr/sbin/a2query > /usr/sbin/a2query chmod 755 /usr/sbin/a2query Replace /var/cache/apt/archives/apache2\_2.4.7-1ubuntu4\_amd64.deb with the name of the file given in the error messages. Note that the first command is splitted on two lines in the above. So, copy both lines at once before pasting it in a terminal window.

How To Restore Skype Status Bar Icon In Ubuntu 14.04

April 28, 2014 · admin Ubuntu Ubuntu 12.04 Ubuntu 14.04
After installing Skype on Ubuntu 14.04, there is no icon in the status bar. To restore it, simply execute the following command: sudo apt-get install sni-qt:i386. This procedure works on the 64 bits version of Ubuntu.

How to change the maximum upload file size in PHP

April 28, 2014 · admin PHP apache
You can increase the maximum upload file size for only one application by creating a php.ini file in the directory where the file upload PHP script is. Add the following lines: ; Maximum allowed size for uploaded files. upload_max_filesize = 40M ; Must be greater than or equal to upload_max_filesize post_max_size = 40M It can also be changed system wide by editing the file /etc/php5/apache2/php.ini which is the global php.ini file. Modify the two lines listed above and restart apache.

20 mm wide 90 Degrees T-Slot Angle Brackets

April 28, 2014 · admin 3D Printing object
20 x 20 x 20 mm, 20 x 40 x 40 mm and 20 x 60 x 60 mm 90 degrees T-Slot brackets.

How to display the version of Ubuntu you are running

April 18, 2014 · admin Ubuntu 11.10 Ubuntu 11.04 Ubuntu Ubuntu 12.04
From a terminal window, type in: lsb_release -a