After a failed attempt (see my previous post) to re-gain access to my HP-probook 5310m laptop due to a bios pre-boot authentication, I decided to give it another go. First of all, we needed to dump the bios chip, but as it it is not easily accessible, we need to take the machine apart. then I added some wires to the probook’s bios chip, but as it I couldn’t get consistent bios dumps, I removed the bios chip and soldered wires to it: [but any two dumps of the chip (using flashrom and a buspirate), it’s checksum differed.
Some time ago I needed bit more power that the regular Arduino is able to provide. Therefore I thought, lets brush up my ARM skills.
So I desired to make some hefty investments in ARM, here is what i got:
- STM32F103CTB dev board, $4,88
- ST LINK-v2 (clone), $4,08
This was a major sad back, not taking in consideration the poor EUR -> $ ratio :)
NO but searilously cheap, just the way any duch-guy likes it :P
Then it is time to fire up the IDE, many to choose from, I chose: OpenSTM32 (which is basically a pre-setup Eclipse environment).
In an attempt to build my own laser-scanner/project i’ve googled alot… which is kinda what most it’ers do when solving stuff.
Anyhow most of the people that are into lasers and shit, are know with Elm-Chan’s project, which basically means buidling your own galvanometers and analog drivers. Since my litte appartment didn’t came with a broad set of vertical drills, milling machines and lathe’s to craft the stators of the galvano’s… I didn’t bother trying it. Another difficulty is my somehow limited analog electronics skillset… (but hey, if your writing ruby/java and mongodb queries all day..). Anyway. Chan’s path was not mine to take.