vrijdag 23 augustus 2019

Nirvana live at The Hollywood Palace, California (October 25, 1991)

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One month after "Nevermind" was released, Nirvana played at The Palace in Hollywood, on the  Rock for Choice  benefit [1] . Full ...
donderdag 22 augustus 2019

Making VirtualBox vboxdrv kernel driver 5.1.x compatible with Linux 4.20.x

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When Ubuntu 16.04.6 LTS users do: sudo apt-get install virtualbox ...they receive VirtualBox 5.1.38-dfsg-0ubuntu1.16.04.3. This shoul...
vrijdag 12 mei 2017

Waking up Linux from suspend mode

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To see wake-up sources on Linux, use acpitool -w: acpitool -w    Device S-state  Status   Sysfs node   -----------------------------...
1 opmerking:
donderdag 6 april 2017

Linux shell script to fix LibreOffice 5.1's docx "unknown error" word/document.xml issues

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I investigated some issues that caused LibreOffice version 5.1.6.2 to error out when opening certain docx files created with Microsoft Offic...
1 opmerking:
donderdag 13 oktober 2016

First successful static firing of tiny steel GALCIT rocket motor

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We're happy to report that we have made our first tiny steel GALCIT rocket motor and successfully static fired it to thrust! For this...
dinsdag 27 september 2016

Successful GALCIT 61-C ignition using standard electrical matches

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We recently experimented with standard electrical matches  to ignite GALCIT 61-C propellant samples in combination with an off-the-shelf 433...
donderdag 11 augustus 2016

Reverse engineering the SLAB HT2000 CO2, temperature and relative humidity sensor

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TL;DR: I reverse engineered the SLAB HT2000 CO2, temperature and relative humidity (RH) data logger made by Dongguan Xintai Instrument Corpo...
2 opmerkingen:
dinsdag 19 juli 2016

Linux shell script to stream audio to a Zavio IP Camera

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While I was showing an apprentice how to reverse engineer closed HTTP interfaces, we figured out how the proprietary Zavio webbrowser plugin...
woensdag 6 juli 2016

Nichrome and black powder electrical pyrotechnic igniter with GALCIT solid rocket propellant

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We've made progress on the pyrotechnic igniter. It now uses nichrome wire because it has a high resistance, so it gets very hot when ele...
dinsdag 7 juni 2016

Electrical model rocket black powder igniter with steelwool

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Hypothesis: A cheap rocket motor igniter can be made out of steel wool and black powder. We tried out the concept by sending an electric...