On MCH2022 I attended a talk about Sensor.Community a Global Open Environmental Data Platform. The platform is a nice example of citizen science, with a large network of self made sensors that measure air quality, temperature, humidity, atmospheric pressure and if you build an extra fancy one, also sound pollution. Since it’s a nice project with clear instructions (Dutch, English), I ordered the parts when I still was at MCH2022.
It was only a couple of weeks ago that I found the time to build the actual sensor. Assembly was super easy and this is definitely an nice project for beginners, with minimal soldering required.
If you are like me, you probably have a couple of domain names. Some in use, some cool to have, some for other people. Recently I realized that spammers can use domains that are not properly configured to use email and so I looked in to how to protect these domains while parked (or only in use for a simple site). I came across this elaborate document from the M3AAWG (Messaging, Malware and Mobile Anti-Abuse Working Group), I tried summarizing it below. Replace the bold example.com in the examples below by your own parked domain.
I like using free (as in freedom) and open source software as much as possible. But a truly open source computer, with open source bios and other firmware, is either very expensive or the models are very very old. Brands like Purism offer newer models (with a modern CPU etc) at high prices or you can buy a refurbished older laptop with all the open source bells and whistles from brands like Nitrokey also at a high price. Both were to expensive for my taste and I decided to take the DIY route.
Since I was interested in running Qubes OS and Debian I looked at hardware recommended by the Qubes project. The Lenovo X230 looked liked the most likely candidate since they are readily available on second-hand marketplaces or at websites that sell refurbished laptops.