sharow :archlinux: boosted

I chose "Browser, office, and Player".

I use Firefox, LibreOffice, and VLC everyday for both personal and teaching purposes.

Let me share with you. My computer is Thinkpad, my OS is Kubuntu, my desktop is KDE, and my job is teaching and writing. I am an avid Telegram and Mastodon user -- Telegram for teaching, as a classroom, and Mastodon to communicate with you all.

I attached my #FreeSoftware poster with this message, created with Inkscape illustrator.

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sharow :archlinux: boosted
sharow :archlinux: boosted

:arch: linux-5.13.4.arch1-1-x86_64 is 124MiB!? whats going on??

Ok. I finally willing to fix this.
HP54610B, it's 20MspsπŸ˜‚ , but 500MHz bandwidth.
Issue I suspected is negative power trace is broken somewhere, I don't know exactly where is. but I just add power line, and it's works. noice.
Sad part about 54610 is no schematic available. there is service manual but basically it's "Changeneer" manual.

I think PDM(β‰’DSD) is really good for microphone interface. or maybe it's just phantom powering is stupid.

MEMS ultrasonic microphone module working! ... kind of.
it's a little bit annoying for properly setup, I mean startup.
first you need to feed about 500kHz, and 75 ms(or more) later jump up to 4MHz.

Next I need 4th order low-pass filter.

sharow :archlinux: boosted

#TIL The #Brainfuck programming language has a dialect called "I use Arch, btw". In this dialect, the original symbols are replaced with "I", "use", "arch", "linux", "btw", "by", "the", "way". #Arch #ArchLinux

github.com/OverMighty/i-use-ar

This is a "Hello World!" example:

arch the i the use linux the way i arch the i arch arch arch i the arch arch arch arch arch arch arch arch arch arch arch i way the i way linux the use way i linux way way arch arch arch arch arch arch arch arch arch arch use way i i i i i i linux linux linux linux btw use use arch arch arch btw use linux btw btw arch arch arch btw use linux btw i i i btw use use btw arch arch arch btw linux linux linux linux linux linux btw i linux btw use use arch btw use btw

crude pulse generator, about 2 years ago.
rise-time 850ps. not bad, except ringing.

sharow :archlinux: boosted

Are cell phones becoming more Faraday Cage-resistant?

tilde.town/~kzimmermann/articl

If their current "telemetry" levels isn't enough going on, now it looks like they're getting harder and harder to isolate completely.

This is post 15 of my challenge

sharow :archlinux: boosted

5G mid-band. this is so called 'frequency hopping spread spectrum'. invented by Hollywood actress.

I'm not joking...
en.wikipedia.org/wiki/Hedy_Lam

rf spectrum in my room. not even proper antenna. just piece of cable.
a strongest signal is 3G(700 to 900MHz). around 2.4GHz is my WiFi.

also around 3.4GHz, it is 5G Mid-band. but I'm not COVIDed yet.

I'm finally got real Spectrum Analyzer. '80s built. 3.5GHz.

but I'm looking for Network Analyzer... why this happen?

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Fosstodon is an English speaking Mastodon instance that is open to anyone who is interested in technology; particularly free & open source software.