Author: halfgaar

http://www.halfgaar.net/

Halfgaar is Wiebe. Wiebe is a contributing author on this weblog. He also has a lot of stuff (such as long, in-depth articles) on his personal website.

Wiebe works at YTEC, where he is a senior developer of customer-specific tailor-made software (“klantspecifieke maatwerk software“) for clients in a few select markets: wholesale, printing and healthcare.

Setting up a Zimbra authenticated proxy

On March 18th, Synacor posted about a critical Zimbra security vulnerability (CVE 2019 9670), which was quick to be exploited in the wild, and subsequently evolved to be harder to erradicate. Read More »
By halfgaar, 1 week ago, on June 11, 2019, at 20:06 | Comments closed

Programming my friend’s remote

I built a sound system for a friend, and programmed Philips RC5 remote control into the microcontroller. I recently ordered this remote: Read More »
By halfgaar, 3 months ago, on March 06, 2019, at 22:03 | Comments closed

Git and Tig config base

Here's just a quick .gitconfig: [core] commentchar = % [tig "color"] date = cyan black bold diff-header = cyan black [tig] ignore-case = yes Read More »
By halfgaar, 6 months ago, on December 05, 2018, at 10:12 | Comments closed

Attempt to repair short on motherbord

At work, we had a small embedded PC that had a short in the mainboard. I attempted a fix, mostly for educational purposes. It wasn't successful, but I wanted to post the method and result anyway. The method I used is elaborately explained on Youtube, so go hunt there for more details. Read More »
By halfgaar, 8 months ago, on October 27, 2018, at 13:10 | Comments closed

Garbled screen in tmux on Ubuntu 18.04 in Konsole

There is a bug in Konsole with tmux: lines often aren't cleared properly. To fix, put this in tmux.conf: Read More »
By halfgaar, 1 year ago, on June 15, 2018, at 15:06 | Comments closed

Nginx maintenance page

Just some example code for an nginx maintenance page: server { listen 80; listen 443 ssl; server_name www.example.com; Read More »
By halfgaar, 1 year ago, on June 04, 2018, at 15:06 | Comments closed

Softstarter (ballast start) relay charred after years of use

This is an interesting case. I made a sound system for a friend in 2012. In it is a soft-starter, that engages the heavy transformer through a ballast, so that the fuse doesn't trip. This is it: Read More »
By halfgaar, 1 year ago, on May 08, 2018, at 20:05 | Comments closed

Digital audio passthrough on TVs

I was researching how TVs pass through audio coming in from HDMI, and I found this. Just dumping it here as memory. Read More »
By halfgaar, 1 year ago, on March 18, 2018, at 13:03 | Comments closed

Spectre and Meltdown Status

Just some quick links with the status of Spectre and Meltdown: Read More »
By halfgaar, 1 year ago, on January 05, 2018, at 20:01 | Comments closed

Low noise linear power supply

Just as a note to self mostly: this is an interesting article about the noise in a LM317/LM337 based power supply. Read More »
By halfgaar, 2 years ago, on November 26, 2017, at 15:11 | Comments closed