As previously described, I made a simple adapter to mount a 405nm blue laser diode to expose PCBs. There are for sure other methods that seem simpler, like separating the laser toner from a print or printing on transparent film, but our goal was to make it a “just press start” method using things we had lying around. No “process” that may vary with laser toner properties, chemicals, time involved. Just place it in printer and get a perfectly exposed PCB. Hopefully. The first print of the laser mount was quite usable as you can see. Just the image is… Continue Reading... "[UM2] Laser Addon – Part 2"
I am currently thinking about adding a laser to our Ultimaker 2 at work. Primary use case would be exposing PCBs to etch them on our own. For this task we need some UV laser on the printhead. Well the chinese sellers on aliexpress.com sell them for less than 2€ including P&P, why not use them? So i disassembled a standard 405nm blue-ish purple laser i had lying around and checked what is in there. Ideal would be if these cheap laser pointers had a 24V capable constant current driver that allows PWM dimming using the UM2’s cooling fan output.… Continue Reading... "[UM2] Laser Addon"
This year I improved my christmas tree LED lights from last year. I removed the Infineon MCU (XMC1100) which already was at it’s limits and replaced it with an ESP8266. So i put the cool and versatile WiFi enabled MCU under my xmas tree, featuring an ugly, crude web interface using ESP8266WebServer (i am no web dev at all) and ported the old code from the XMC1100 over. Porting was just a task of ten minutes to be honest. The most time consuming part was all the stuff like adding SPIFFS+JSON based configuration saving, configuration parameter web interface, NTP time… Continue Reading... "[ESP8266] Xmas tree lights"
Its holiday time and i thought it’s time to revive this old blog and update some stuff. Let’s see how far this intent will come ;) Continue Reading... "[blog] revived again"
Long time ago I coded tools to capture, demodulate, decode and decrypt data from an Software Defined Radio (SDR). As i dont see any reason to keep it private, i decided to release the source code. I mainly used a device that is comparable to the USRP, but designed by a friend of mine. Still these tools can work with .cfile that are saved from USRP. There is also a prototypic implementation for the HiQ-SDR device that is not tested a lot. Nearly all the code is written by myself with these exceptions that come into my mind right now:… Continue Reading... "[GSM] Source code of RX-FFT and GSM-Analyzer"
Since last year I helped a little developing Magic Lantern, a Firmware mod for Canon EOS DSLRs. I reverse engineered some interesting registers and memory structures that make frame rate patching possible. (yeah, as always I couldn’t resist reverse engineering the next device I bought :) ) Now I’ve coded a little tool that makes it possible to: a) Calculate the exact timer frequency that generates frame rate and b) generate custom frame rates The tool is available here. Here some screenshot. Continue Reading... "[EOS] TimerGen Tool"
I added Kraken-win32 to my projects page. There you can read more about my kraken port. Continue Reading... "[GSM] Kraken-win32"
I added a new project – my WebDAVServer for mobile phones. It was designed to be a small and simple WebDAV server for downloading files from your PC with your mobile phone. See the project page. Continue Reading... "WebDAVServer"
currently i am porting Kraken, the fantastic A5/1 cipher cracker to win32/x64. it seems that i am done with most of the steps. it starts, cracks the keys, supports ATI cards as the linux version does and is even able to run as a multi-client server application. i also added support for older cards like the Radeon HD 3870 which will speed up the key search by maybe 10% depending on your HDD setup. unfortunately its no GPL or even a more free license like MIT or BSD. so i may not publish my changes. instead i will try to… Continue Reading... "[GSM] Kraken"
i just realized that the date of all posts is set to 2007.. interesting bug :) Continue Reading... "strange date"