Toots · Hackerific

Here are the toots from my Mastodon account. If you’re into ham radio and technology this is a great inclusive server with an awesome mascot called Alex.

It's Alex! A soft brown mastodon holding a handheld radio in their right hand and carrying a blue bag over their shoulder — Alex, the mastodon.radio mascot

Posted status:

Jan 8, 2020

Slightly old news, but this business card which also runs linux is neat: https://www.thirtythreeforty.net/posts/2019/12/my-business-card-runs-linux/

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Posted status:

Dec 31, 2019

Today’s project was Cordwood Puzzle 1, a secret santa present from a good mate.

Just hard enough to complete without cheating! (although I should have left the leads longer to keep things symmetrical).

Oh, and Happy New Year all!

A squared note book with some large resistors and a narrow PCB on the top half of page. There are some notes and circuit diagrams on the bottom half.

A PCB in a clamp. There are three MOSFETs in a row along the top of the board, and a 6 pin header close to the camera.

The same PCB from the side. There’s a large LED on the bottom of the board and two resistors on the top. The resistors are connected with crocodile clips (to the positive supply rail which is not shown).

The completed puzzle: two PCBs, side-on, with 6 LEDs, 6 resistors on a plane parallel with the camera and another 6 behind. There are also standoffs connecting the boards and some jumpers running between them.

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Posted status:

Dec 27, 2019

I updated my website to use a different Hugo theme and switched comments to commento ( https://commento.io/) from disqus.

I also disabled google analytics (inspired by my instance buddies!).

Not 100% sure about the theme yet, and I see there’s a fair amout of link-rot, but it’s clean and quick. Oh, and @ https://hackerific.net

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Posted status:

Dec 24, 2019

Happy Holidays everyone!

Here’s hoping everyone gets a bit of quality time with some random projects 🥂

So far, I’ve repaired Dad’s PSU (it works!) and build a new 60% mechanical keyboard. Some info here: https://github.com/mattfoster/gh60-satan-keymap Fun times!

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Posted status:

Just pulled a dead rectifier from Dad’s EP-925 PSU.

It’s basically identical to the PS-30M I have which I repaired last year when a pass transistor shorted. Chunky and hard to get inside but generally fairly simple.

Fingers crossed this is the only problem with it. 🤞

#hamradio #repair

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Posted status:

Dec 14, 2019 #trunk

@carbontwelve Please add me to Ham Radio. #Trunk

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Posted status:

Dec 13, 2019 #sdr

Forgot to mention I found the AirSpy HF repo on github: https://github.com/airspy/airspyhf

These tools work with the Airspy HF+ Discovery on the Pi and Mac, (although I did still need a windows box to update the firmware). They’re also not yet packaged on Debian, or in the official homebrew project.

I’ve not had much time to play, but I think airspyhf_rx should work a lot like the RTL tools.

Also, this blog has a lot of cool content, even though I can’t read it: spinorlab.matrix.jp/ja/page/3/

#sdr

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Posted status:

Dec 13, 2019 #sdr #amateurradio #hamradio

Well that was depressing to wake up to!

Looking around for some interesting/good news, I’ve found:

https://github.com/jketterl/openwebrx – A fork of OpenwebRX with support for AirSpy HF+ ( https://groups.io/g/airspy/message/33180)

Also, someone put an ultrasonic transducer on an SDR: https://www.youtube.com/watch?v=H8z02pICisM So I could you could use this to make a bat detector? It’s super cool to hear the doppler shift.

#hamradio #amateurradio #sdr

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