How to assign a static IP address in Ubuntu
February 23, 2014
· admin
Ubuntu 11.10
Unix
Ubuntu 11.04
Ubuntu
Linux
Ubuntu 12.04
Setting a static IP address in Ubuntu involves editing /etc/network/interfaces. If the interface is currently using DHCP, you will find these lines in the file.
auto lan
iface lan inet dhcp
You will have to replace the above lines with a section that looks like:
auto lan
iface lan inet static
address 192.168.1.80
netmask 255.255.255.0
network 192.168.1.0
broadcast 192.168.1.255
gateway 192.168.1.200
dns-nameservers 8.8.8.8
Make the changes effective by either rebooting or by issuing this command:
sudo /etc/init.d/networking restart
How to change the network interface name in Ubuntu 12/13
February 22, 2014
· admin
Unix
Ubuntu
Linux
Ubuntu 12.04
Two files need to be modified to change the name of a network interface in Ubuntu. For example, if you want to change eth0 for lan, simply change the NAME attribute from eth0 to lan in these files and reboot. Do not modify the KERNEL attribute.
/etc/udev/rules.d/70-persistent-net.rules
/etc/network/interfaces
Simple, Yet Stylish Phone Stand Printable Rods
February 16, 2014
· admin
3D Printing
object
Printable rods for Simple, yet stylish phone stand. Length is 50 mm, 10 mm in diameter.
40 Mm Fan Deflector
February 16, 2014
· admin
3D Printing
object
40 mm fan deflector compatible with Misan's Another Compact Extruder Fan Holder.
Power Outage Protection for 3D printers
January 4, 2014
· admin
3D Printing
object
This device is a protection against power outage for a 3D printer. If the power goes out, the printer will not be turned back on when the power comes back.
The scenario I have experienced is the following. I was printing an object using a laptop. While printing, the power went out. The Arduino stayed powered by the laptop. When the power came back, the extruder was turned back on but no filament was pushed in by the extruder. The result was a ruined J-Head. The filament was burned solid in the extruder. I had to replace it.
When power is applied to the device, the push button must be depressed to have power on the output terminal.
Be careful when building this device. It deals with a lot of currents: 16A per printer. It is enough to catch on fire if not assembled properly or the right components are not used.
This device can drive only one device at the time. If you want to drive two printers, you shall replace the wiring gauge, the relay, the switches, etc.
Shame on me! I did not print the case. This case cost less than $5. It simply does not worth it designing one and printing it.
Bill Of Materials
- 1 relay NVF4-4C-Z30A-12VDC. It is a relay used for cars. [K1]
- 1 bolt and nut to attach the relay to the case
- 1 four posts terminal [CONN2]
- 1 two posts terminal [CONN1]
- 1 switch with a 12VDC light [S3/GL1]
- 1 push button normally open [S1]
- 1 12VDC light [GL2]
- 1 switch to select which printer is active (The one I got has a neutral position.) [S2]
- 1 12 ohms 1/2 watt resistors [R2]
- 2 36 ohms 1/4 watt resistor [R1/R3]
- Solderless terminals.
- 6 feet of 12 AWG wire
- 1 Hammond case 1591XXSSFLBK
The resistors are required only if you are using a 13.8VDC power supply.
Simple Spool Bushing V2
December 31, 2013
· admin
3D Printing
object
These spool bushings are simple. Use one or two elastic bands to install them on a spool. Nothing else is required. The center hole of the bushing is for a 1/4" smooth rod. It can be easily increased with a drill bit.
I have supplied spool bushing of 31, 39 and 52 mm. They fit center holes of 32, 40 and 53 mm respectively. If you need another size, just give me the diameter of the center hole of your spool, and I will upload them. The minimum size is 30 mm.
Print Bed Center Marker
December 29, 2013
· admin
3D Printing
object
This object helps in the calibration of the center of your print bed. Its overall size is 30 mm x 30 mm x 2 mm in height.
Vertical Calibration Cylinder
December 29, 2013
· admin
3D Printing
object
This calibration object helps to assess the correctness of the motor calibrations. The external diameter of this object is 30 mm, and its height is 50 mm. Furthermore, the printed cylinder shall be perfectly round.
Desk Organizer
December 29, 2013
· admin
3D Printing
object
This desk organizer also has a storage area for 3 x 5 inches index card in the back.