Category: Technology

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, 3 years 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, 3 years 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, 3 years 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, 3 years 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, 3 years 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, 4 years ago, on January 05, 2018, at 20:01 | Comments closed

Writing bootable disk images (.iso, .img, etc.) to a USB stick from Windows

Because Windows doesn't have dd, and I want to write the latest Mint LTS release to a USB task, I had to face the unpleasant task of finding a Windows tool to perform what's a basic Unix operation. The good news is that I found one, and it's open source: Win32 Disk Imager. It even has a version ≥ 1, titled: “Holy cow, we made a 1.0 Release”. Read More »
By Rowan Rodrik, 4 years ago, on December 17, 2017, at 19:12 | 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, 4 years ago, on November 26, 2017, at 15:11 | Comments closed

Web print is still shit, even for CSS2 print features

Having spent ten yours out of the loop, I had somehow expected browser makers to take some time out of their favorite hobby—moving knobs and settings around—to implement CSS printing support. I'm all for saving paper and all, but requiring me to pipe my HTML through LaTeX to produce halfway decent documents doesn't feel very 2017ish to me. In 2007, it already didn't even feel very 2007is to me. Read More »
By Rowan Rodrik, 4 years ago, on October 14, 2017, at 21:10 | Comments closed

5.25″ Drive bay for 3.5″ slot

Just to save this link. Read More »
By halfgaar, 4 years ago, on September 23, 2017, at 22:09 | Comments closed