So battery on this Dell Mini 9 I got the other day has a terrible battery life, about 2 hours, I decided to do an experiement to see if sticking the battery in the freezer ACTUALLY does something useful
li-ion battery
all testing done with no interaction of the laptop
-- day 1 --
Day one was basically starting from 0% battery to full charge and then letting it run down back to 0% and repeating this several times
Charging from 0% to 100% took 2 hours
Discharging from 100% to 0% was also 2 hours
-- day 2 --
08:30 battery placed in freezer in two bags as per guides on the internet
-- day 3 --
12:00 Battery is removed after 27 hours in the freezer and given two hours to get back to room temperature.
Charging from 0% to 100% takes 2 hours
Discharge from 100% to 0% also takes 2 hours
-- Results --
Freezing the battery has done nothing what so ever to the battery!
-- addendum --
Some people have said that I need to cycle the battery at least 4 times to see an effect, this is currently being done and the results will be posted later on. I dont think it will work...
Sunday, 4 March 2012
Dell Mini 9 Linux wifi broadcom drivers (solved)
OK so most of this weekend I have spent fucking about trying to find a lightweight linux OS that worked with the broadcom wifi built in.... here are the results
Crunchbang - doesn't install from USB (using unetbootin)
Ubuntu 12.04 beta - didn't work out the box
Ubuntu 10.04 - worked but way way too heavy
Ubuntu 11.10 - too heavy hate gnome3 and unity
Arch - argghhhh just NO
Xubuntu - lightweight but didn't work out the box
Linux mint debian xfce - didn't work out the box
Linux mint 12 - Live CD worked fine - useable but installed didn't work and needed a wired connection
So what have I gone for? Linux Mint 12, set up with a wired connection to install the bcm-kernal-sources which i am hoping to move over to xfce.
Crunchbang - doesn't install from USB (using unetbootin)
Ubuntu 12.04 beta - didn't work out the box
Ubuntu 10.04 - worked but way way too heavy
Ubuntu 11.10 - too heavy hate gnome3 and unity
Arch - argghhhh just NO
Xubuntu - lightweight but didn't work out the box
Linux mint debian xfce - didn't work out the box
Linux mint 12 - Live CD worked fine - useable but installed didn't work and needed a wired connection
So what have I gone for? Linux Mint 12, set up with a wired connection to install the bcm-kernal-sources which i am hoping to move over to xfce.
Tuesday, 14 February 2012
Network Thumbnails in Ubuntu
Just found this out as a cure for a little annoyance of mine, not seeing thumbnails of images/files over network shares.
goto Nautilus > edit > preferences > preview
and change thumbnails to Always rather than Local Only.
Another small problem in life fixed!
goto Nautilus > edit > preferences > preview
and change thumbnails to Always rather than Local Only.
Another small problem in life fixed!
Friday, 27 January 2012
3d Rep-rap printer build (phase 2)
Thought I would share the current state of the 3d Rep-rap printer I am building... z-motors installed along with Z-guides, the Y axis wood bed (the Z motor wires are sitting on it) is also installed now and everything is now tightened up and secure - the weight has pretty much trebled too!
Saturday, 21 January 2012
ATM card skimmer (real)
Well as I am being all photographic today, I thought I should get some photos up of the ATM I aquired from some friends who found it on an ATM machine in Oxford Street London (they contacted the police but they didnt seem to care - nice!) So after some months I have it and here it is in its full glory.
Now to try to figure out how it works and get into some proper hardware reverse engineering!
Now to try to figure out how it works and get into some proper hardware reverse engineering!
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