Sabtu, 12 April 2014
Hurt Locker P2P Lawsuits Move On To Canada
Jumat, 11 April 2014
extroots
the extroots is a mechanism to transfer our instalation to external device like flashdrive / hardisk external. its very important, because basicly the mr3020 doesnt have enough space in memory to install thing such luci (web interface). after flashing the kernel we should access the mr3020 via telnet / putty. Be sure to understand the basic of linux command line before you do this.
this is my 16gb sandisk cruzher. i have formatted it to ext2 with mini tool partition wizard home edition.
I format the flashdisk to 8gb fat32
(to save data whenever i want plug in to a windows operating system), 100mb linux swap, adding some additional virtual ram. And the rest space of the flashdisk to ext-2 format.
now proceed to our devices... plug in our usb flash drives.
install requirement packet by typing opkg install [packet_name]
- block-mount
- kmod-usb-storage
- kmod-fs-ext4
vi /etc/config/fstab
config global automount
option from_fstab 1
option anon_mount 1
config global autoswap
option from_fstab 1
option anon_swap 0
config mount
option target /home
option device /dev/sda1
option fstype ext4
option options rw,sync
option enabled 0
option enabled_fsck 0
config swap
option device /dev/sda2 -> this is our 100mb swap that we already created
option enabled 1 -> enabled it
config mount
option device /dev/sda3 -> this is our ext2 formated usb that we already created
option target /mnt/usb -> i mount it on /mnt/usb
option enabled_fsck 0
option options rw,sync -> mount with read and write + sync
option enabled 1 -> enabled it
option is_rootfs 1 -> to make extroots
after that press esc, then :wq to save and rewrite fstab configuration.
now restart your tplink mr3020.... either by plug off power source or type reboot in the console.
login into console....
type df
it will show
rootfs 6927587 8194 6561947 0% /
/dev/root 2880 2824 56 98% /rom
tmpfs 14580 80 14500 1% /tmp
tmpfs 512 0 512 0% /dev
/dev/sda3 6927587 8194 6561947 0% /overlay
overlayfs:/overlay 6927587 8194 6561947 0% / -> before we edit fstab there isnt there
tar -C /overlay -cvf - . | tar -C /mnt/usb/ -xf -
to pivot whole /overlay to the usb storage which already being mount from /dev/sda3 to /mnt/usb.
done. now all our further instalation will move on our storage...
ATmega328 is no longer blank it loaded with Arduino boot loader
![]() |
| Blank ATmega328 flushed with Arduino boot loader |
![]() |
| Flushed ATmega circuit built and testing with sketches (This board is named as "pixelduino") :-) |
![]() |
| Arduino UNO connected to Blank ATmega328 as an ISP programmer. After flushing its loaded with blink sketch for test and it works well. |
Kamis, 10 April 2014
Meet 蓝博文(Bowen Na
![]() |
| From Bay Area |
As of last night at 10:27pm, I am a father. XiaoQin and I picked the name because it works both in Mandarin and English (using the Pinyin Anglicization). The labor was a 18 hour process, but resulted in a C-section because the umbilical cord was wrapped around little Bowens neck, and this was the safest way to get the baby out. Mother and Baby are recovering and bonding just fine.
Ive posted more than one picture on Facebook, but this sleep-deprived dad is unable to get Two Factor Authentication to work on PicasaWebs plugin from Lightroom, so Google+ users will just have to live with this one picture posted to an account without Two Factor Auth turned on.
Given this state of affairs will persist for the foreseeable future, and I dont see myself spamming my blog with baby pictures, just ask me on Facebook to be added to the Facebook group devoted entirely to baby-spam.
Rabu, 09 April 2014
Nvidia announces next generation 64 bit Tegra K1 SoC with 192 GPU cores
Selasa, 08 April 2014
Measuring RAM Speed
Memory RAM Speed - Access Time, Megahertz (MHz), Bytes Per SecondPrior to SDRAM, speed was expressed in terms of nanoseconds (ns). This measured the amount of time it takes the module to deliver a data request. Therefore, the lower the nanosecond speed, the faster. Typical speeds were 90, 80, 70 and 60ns. Older 486 machines may have 80 or 90. More recent Pentiums will have 60 or 70. | | ||||||||||||
Often, the last digit of a memory part number will represents the speed such as -6 = 60ns. SDRAM speed is measured in megahertz (MHz). Speed markings on the memory chips may still specific nanoseconds, but in this case in represents the number of nanoseconds between clock cycles. To add to the confusion the markings on the chips dont match the Mhz value. Here is a conversion chart. To calculate bytes per second you need to know the Bus Width and Bus Speed of your PC. The first thing to remember is 8-bits = 1 byte. If you have a 64-bit bus, than 8 bytes of information can be transferred at one time. (64 / 8 bits = 8 bytes) If your bus speed is 100Mhz (100 million clock cycles per second) and the bus width is 1 byte wide, the speed is 100 MBs per second. With a 64-bit width, the speed is 800 MBs per second (64 / 8 * 100,000,000) Rambus modules are measured in megabytes per second. Rambus modules are either 400 or 300Mhz. Because they send two pieces of information every clock cycle, you get 800 or 600Mhz. They have a 16-bit bus width or 2 bytes (16/8). The 400Mhz module speed is 1600MB a second or 1.6GB a second. (400,000,000 * 2) * 2. The 300Mhz module provides 1.2GBs a second. | |||||||||||||








