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The Weird Fuses In Laptop Batteries
2016-09-05 14:36
I called them "externally triggerable fuse" in my first post. The datasheets call them "Combined Thermal Fuse/Resistor" or "Fuse-Resistance protector".Chances are your first time seeing one… Read More
Hacking The R2J240 With LGC Firmware
2016-08-30 10:34
The second battery controller I looked at was the Renesas R2J240-10F020. It's a complete black box with very little information available except for some outtakes from the datasheet on Chi… Read More
Hacking The Bq8030 With SANYO Firmware
2016-08-30 10:34
As mentioned in the previous article the bq8030 is the blank version of the bq20z90. If you bought some from Aliexpress they'd come up with the TI Boot ROM and you could use the flashing too… Read More
SMBusb - Hacking Smart Batteries
2016-08-26 15:40
Having gone deep down the rabbit hole of researching smart laptop battery controllers I've ended up reverse engineering a couple of them used in ThinkPad batteries. Looking around there's ve… Read More
2016-05-01 13:34
The Qualcomm Gobi2000 is an internal Mini PCI Express 3G modem. It was used in a variety of machines including the Lenovo Thinkpad X100e.It's a bit unintuitive to set up (to say the least) s… Read More
2016-03-02 21:03
Continued from Part 1.I checked around for a replacement display and ended up buying a Samsung LTN170X2-L02 (datasheet) for $25 shipped. Bargain.Another thing the UniMac adapter comes with i… Read More
2015-10-16 20:18
So my father's browsing PC bit the dust. It was a 15 year old dinosaur with USB1.1, SD-RAM and a Northwood core Pentium 4. Wasted way more time trying to save it than the whole thing is wort… Read More
2014-11-21 13:48
Quick follow-up to my Fixing the cable post from last year.I never looked for anything else after Cosm went down to plot the numbers from my cable modem. There wasn't really a good enough al… Read More
2014-11-21 13:25
So a few months ago I switched from ADSL to cable. The installation didn't really go smoothly as everyone seems to have forgotten about an extra splitter in the attic which was left in the p… Read More
2014-11-16 19:23
This was a pretty lengthy project so I won't post it all in one go, this is just the beginning.Some background info:I've been using the same Core2Duo workstation (actually a ThinkPad on a do… Read More
2014-11-03 17:27
What happens when you buy a netbook on auction for a friend, advertised as used in great condition with minimal wear and then the scammy seller sends you a machine that had it's hinge suppor… Read More
2014-10-30 00:45
Whew,  It's been an interesting year.I am still alive just haven't been doing many things that are a good fit for an entry on this blog.Here's a quick project from a few months ago.I wa… Read More
2013-09-22 00:29
Bought a few of these ancient V-Star smart card readers for around $1 a piece. Manufactured in 98, fits in a 3.5" floppy drive bay, no drivers, protocol documentation lost to time. They are… Read More
2013-03-25 20:27
Couple of years ago I bought a supposedly broken EEE 901 netbook motherboard for $5. Not really sure what I wanted with it. Could've been during a time when I wanted to practice soldering BG… Read More
2013-01-26 16:38
It's fairly common knowledge that Lenovo like many other makers uses a bios whitelist to restrict the wireless cards that can be used in their laptops. I've bypassed that with a modded bios… Read More
2012-11-18 22:08
I got one of these chinese solar rechargable keychain lights last christmas from my brother.   Originally the light uses an LR2032 which is a rechargable lithium version of a tradi… Read More
2012-10-16 21:50
This is what I made out of the PowerSem modules I salvaged from the motor soft start controller. The SCR is connected back to back making it analogous to a triac. PCB was hand draw… Read More
2012-09-02 20:07
Just posting to share some pictures.The thing is an OSRAM Electronic Ballast for T8 fluorescent tubes.Hard to tell what the heck really happened here. Walked in the room today to find one se… Read More
2012-02-23 11:13
I have a dedicated PC for my Ultrium drive. I've decided to severely cheap out on the hardware for this machine since I only use it a few times a month. So not really giving it much thought… Read More

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