======Data Communications Journal====== ====August 28, 2013==== *Started to learn about the rasberry pi *with the new modern age it has become harder and harder to do simplier things like send a single bit over a line *i acually have never used a rasberry pi before so this will be a different experience ====September 5, 2013==== *Learning about I/O pins today and tring to program LEDs to work with them *It should be a lot of fun ====September 9, 2013==== *Finally got the led to blink, had to ask josh which pins to use cause the diagram in backwards ====September 12, 2013==== *Started wiring up the raspberry pi to make a binary calculator with led lights *Tring to not get all of the cables crossed ====September 13, 2013==== *Started programming in low level C from the tutorials ====October 24, 2013==== *Wow its been a while... *Been working with morse code to send messages over wires ======HPC Experience I Journal====== ====September 04, 2013==== *Started checking the computers that were here during the flood to check if they still worked or not *If we can continue to use these computers we don't have to find new ones and configure them *Some of these computers are a challenge to open ====October 17, 2013==== *Found out how to run a program in one directory from another directory *You have to use parenthesis to sub-shell to spawn *More can be found from here [[http://stackoverflow.com/questions/786376/how-do-i-run-a-program-with-a-different-working-directory-from-current-from-lin|Run a program from a different directory]] ====October 18, 2013==== *Accidentally nuked /tmp in ubuntu and made the whole system do a login loop *In order to fix this i had to do a few steps while in a tty session *1. mkdir /tmp *2. chmod 777 /tmp *3. chmod +t /tmp *Exit tty and login and your good to go ====October 23, 2013==== * Been getting plagued with this message do_IRQ: 0.107 No irq handler for vector (irq -1) so i went in search of an answer to make it go away * The forum i went to stated to edit /etc/default/grub as superuser and it seems to have worked * I had to edit the file and change GRUB_CMDLINE_LINUX="" to GRUB_CMDLINE_LINUX="pci=nomsi,noaer" ====November 20, 2013==== * Started dabling around with how to write apps for my phone * It would be cool to write your own apps rather than pay someone else to do it.