Blog-of-gain

A tech-oriented blog from a Linux user


Latest blog updates

2020-06-06Motu M4 review: Add note about systemd and realtime audio.
2020-06-06Resizing KVM disk images: Add how to remove Windows recovery partition.
2020-05-11Converting modules into bitstream format: Add case study: Unreal Tournament soundtrack.
2020-04-12Of life and love: New article.
2019-12-31Uupumus - burnout (in Finnish): Lisätty loppuvuoden tilannepäivitys.

Filtering by tag: hardware

Motu M4 review

With measurements and Linux notes

Preview

As new motherboards don't have a PCI bus anymore, finding high-quality, low-latency audio devices that work in Linux might be hard. Released in November 2019, the Motu M4 promises class-compliance, low latency and superb sound quality. How does it measure against its specifications in practice? Read the article to find out.

Updates

2020-06-06Add note about systemd and realtime audio.
2020-04-13Add more Linux compatibility tests and notes.
2020-03-31Add note about switching the sample rate.

Metal strap rocks

I like to fix things using metal strap

Preview

I guess most people tend to resort to something specific when something needs fixing. The most common must be duct tape. I like metal strap, the perforated variety. In this short article I introduce some ways in which metal strap can be used for a lot of things.

ESP8266 deep-sleep repeatedly

How to deep-sleep for a long time and save power

Preview

I made my indoor plant a soil moisture meter which reports the values to Azure cloud. However, I had some trouble making my D1 mini board to sleep and wake up reliably. Turns out, just calling the deep-sleep function once doesn't do the trick. I had to deep-sleep for several shorter cycles before reporting the measurement. Check out the article for a brief how-to.

Updates

2019-11-23Add power consumption measurements.

Widening narrow ice skates with a DIY tool

I guess I have weirdly shaped feet

Preview

As a kid, I never learned how to skate properly. Due to my wide feet it was super hard for me to find fitting skates. Eventually I just bought some decent ones and, since I don't have any contacts to boot punchers, decided to build a tool to make them more compatible with my feet. In this article I introduce the super simple tool that you can make too.

Detachable cable and wireless mod for the AKG K701 headphones

Tested with the new FiiO BTR3 (a review)

Preview

For a long, long time I've been thinking of modifying my original Austrian-made AKG K701 headphones to have a detachable cable. After owning the headphones for eleven years, I finally did it. At the same time I kind of made them wireless using the new FiiO BTR3. Check out the article to see how they fit together.

A review and comparison of headphones and earphones

I bought the Urbanears Sumpan and was surprised

Preview

After finally buying a tablet computer I realized I'm missing a certain type of earphones to use with it. I bumped into the Urbanears Sumpan on sale and decided to try them out. Check out the article for a comparison between the AKG K701 headphones, the Shure SE215 LTD in-ear monitors, the Sony SBH70 Bluetooth earphones, and the fancy Urbanears Sumpan earphones.

WebLED: my first IoT project on the Arduino platform

...or: how to open a garage door using WiFi

Preview

For a long time I've wanted to get more into embedded stuff and closer to the physical world when it comes to computers. As a kid I was quite interested in electronics and tweaked some small stuff, but I never really got into programming anything. Now with the market full of cheap Arduino-compatible chips, I decided to hook myself up into the Internet of Things and make a WiFi-operated garage door opener. Check out the article for an overview of the project.

Sony SBH70 bluetooth earphones review

...with a bit of modding too, of course

Preview

I wanted to have new earphones I could use when walking or doing sports. One of the requirements was they should be open design. I ended up buying the Sony SBH70 bluetooth earphones, found some shortcomings and tried to fix them with a little bit of modding. Read the full article to see some custom wingtips.

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