2019.01.22

Server outages fixed

In the past half a year I was battling seemingly random Internet outages, which finally seem to be resolved! Average system availability increased from 98% to 99,91% in 4 months.

Continue reading...

Labyrinth Mole in Bloodborne found!

As I was doing my casual run-throughs in the Chalice Dungeons I found something I did not see before.

Continue reading...

2018.07.14

The Dark Soul

I finally did it!

Continue reading...

2018.03.21

Multi-threaded port scanning in Delphi

Delphi 7There were several times when my team had to do a port scan in a commercial environment to discover rouge or lingering devices on the network. I always had troubles finding a portable, commercial-free, easy-to-use, fast and trusted application so I decided to write my own.

Continue reading...

2017.12.27

Programming an ATmega328P with Arduino Leonardo (Arduino as ISP)

Do It YourselfAfter successfully hacking the Christmas tree lights with my Arduino Leonardo I realized I had an abandoned project: lots of brand new ATmega328P-PU chips, which are only waiting to be programmed. I knew that an existing Arduino can be used to achieve this but I experienced problems with a Leonardo.

Continue reading...

2017.12.12

Quick and dirty Christmas light fix with Arduino

Christmas is closing upon Do It Yourselfus once again, and I was greeted with not so merry news: the LED lights from last year did not work anymore. Being too late the shops are already closed to buy a new one, but you can't leave your family without the famous look of a Christmas tree. Let's see what we can do about this.

Continue reading...

2017.05.29

Internet outage today and ISP switch in June

There was a long Internet outage today due to device failures at the ISP. The problem seems to be fixed now, all services should be back to normal. Unfortunately I am forced to change service providers, which will most probably cause issues.

Continue reading...

2017.04.01

Passive power supply (PicoPSU clone) in HP Proliant MicroServer

The HP Proliant Microserver was a hit when it appeared on the market. Due to its capabilities it is still a perfect candidate for a low-cost SoHo server, NAS or HTPC. Most users who replaced the stock power supply had problems with the noisy fan and simply fitted a new 1U PSU or swapped the fan itself. For me this was not an option.
After a day of drilling, soldering, screwing and testing I am really happy to announce my next achievement: I successfully installed a passive 12V power supply instead of the stock one in a HP Proliant Microserver!

Continue reading...

2017.03.02

My passive beer can solar furnace

Do It YourselfIn the cold winter days the temperature in the storage building can fall below freezing point. I could use the spare electric oil heater I happen to have, but keeping it running for long months would cost a fortune. It did not take long until I found the famous passive soda can / beer can / pop can solar heaters / furnaces. This is just an other DIY, sharing my experiences during the building process.

Continue reading...

2017.02.08

Delphi hexadecimal operations

Delphi 7I was recently working on a project where I had to work with huge numbers (>32 hexadecimal digits). Since not even the largest integer type was able to hold these, I had to come up with a solution to be able to do arithmetic functions on them.

Continue reading...

2017.01.21

ESXi disk I/O benchmark and improvements

ESXi.pngSince the SSD arrived I had concerns about the disk throughput, performance was just not right. Copying a virtual disk image took a hilarious amount of time due to the ~80kB/sec transfer speed. I spent yesterday night with benchmarking, and the results are already better, but still not perfect.

Continue reading...

2017.01.14

Delphi 7 and Windows 10

Delphi 7I recently managed to crash my development machine so hard that not even a recovery was possible. After the OS the next thing to install was Delphi 7 and I had to face with the usual compatibility issues.
Had enough of researching, it's time to put all necessary steps at one place to make this 15-year-old software to work on a modern system, like Windows 10!

Continue reading...

2016.12.15

P400 battery repaired

Do It Yourself
Of course the salvaged battery had a shorted cell, so I had to improvise. The good news is that it's fixed and working! I also managed to reflash the BIOS with a non-official mod, enabling 3 Gbps, hot-swappable hard drives on all ports. Hail the high availability!

Continue reading...

2016.12.12

Small server outage for performance improvement

Today I had to take the server offline to test a salvaged P400 RAID controller. Although the components were not in use for a really long time, a low battery charge seems to be the only issue so far. A SFF8484 to SATA cable is on the way to be able to harvest the advantages, which includes improved data transfer speeds (lower page load times) and complete data redundancy.

Continue reading...

2016.11.30

Windows Batch Scripting - Elevate.cmd

ScriptingI already made this mistake several times. UAC is turned on and I launch a Command Prompt to perform some activities. However, some actions will eventually fail as we don't have Administrative privileges.
In the past I launched a new Command Prompt (elevated, this time) and navigated back to the original folder to try again. Today I proudly present a script, which will do this for you!

Continue reading...

2016.07.23

Random outages

Random outages of all services were happening in the past two days. The reason behind is a failing UPS which has been temporarily bypassed until the issue has been resolved. Please keep in mind that until the faulty device has been replaced, even a short power outage will cause the system to reboot, resulting complete unavailability for a couple of minutes.
Thank you for your understanding, sorry for the inconvenience caused!

2016.07.22

Redirect ESXi logs to a local datastore

ESXi.pngBy default, ESXi stores all of its vital logs on a non-persisting location. This means if the host crashes, reboots or shuts down no information is available on the root cause. Let's see how to change this.

Continue reading...

2016.03.11

Scheduled power outage

Due to renovations of the electric system, there will be a scheduled power outage from 2016.03.25 08:00 until 16:00 CET. During this period all devices will be turned off, which means the server and the website will be unreachable.
I am sorry about the inconvenience, thank you for your understanding!

2016.02.11

Server outage

During the upcoming weekend I am planning to move the server hosting my services to a different location, which will result inevitable outages. However I am glad to announce that the useable bandwidth will be increased by 100% and due to the completely different infrastructure I am expecting the availability to be increased as well.
Please be patient, everything should be back to normal until Monday, 15th of February.

2016.01.22

Windows Batch Scripting - Counting Gigabytes

command prompt.png
Recently I was assigned to a task where I had to collect folder sizes (and do some math with them) on large number of servers. Talking about real file servers I quickly met the famous "Invalid number.  Numbers are limited to 32-bits of precision." message. Here's how I solved it.

Continue reading...

- page 1 of 2