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Wednesday, 24 May 2017

Raspberry Zero W and Wifi

I recently bought a Raspberry Zero W and immediatly run into problem with the Wifi-connection. The problem was twofold, as is often the case with seemingly unsolvable problems. I spent the good part of an evening trying to work this ou. The root cause is that we are living in an apartement block with at least fifteen quite strong Wifi-routers around us and right across the street we have a hotel with a paywayll wifi. The Raspberry happily connected to the hotel and I mistakenly added it once, and that was enough to cause the first part of the headache. The next problem was that I routinely move our router to the least occupied frequency band, which happened to be channel 13. Maybe there were some additinoal interference not showing up in the Wifi-monitoring software I have, or the Raspberry Zero has a problem with higher channels. Anyway, the solution was twofold.

First, editing the Wifi config-file, removing the hotel Wifi that made the Raspberry to disconnect from our own router. Edit via e.g. 'sudo nano /etc/wpa_supplicant/wpa_supplicant.conf'
 Secondly, moving our router down to channel 8 which is not ideal but good enough.

An additional update to the config file added a second Wifi in the form of a mobile phone hotspot and the resulting config file can be seen below. The Raspberry takes some time to switch between the two networks.

Norman Doors revisited

Image result for norman door


Utvecklare, UX'are och i det här fallet stater skall inte designa teknik så som de själva tycker utan utgångspunkten skall alltid vara att utgå från hur människor fungerar. Svårare än så är det inte.

https://medium.com/@markzee/mh17-a-darker-truth-21dc21879fa7

Wednesday, 17 May 2017

Fullscreen Powershell



Av någon anledning så öppnas Powershell på samma sätt om Command, dvs ett smalt fönster som inte fyller hela skärmen. Det finns ingen enkel inställning för detta, men i posten nedan så visas en enkel lösning, skriva bara 'mode 300' i PS.

http://stackoverflow.com/questions/5197278/how-to-go-fullscreen-in-powershell

Sunday, 3 July 2016

Typografi i Alien

Image result for nostromo
Smalt men oerhört läsvärt och som ger perspektiv långt bortom bara typografin, om man nu inte är intresserad av bara det: https://typesetinthefuture.com/2014/12/01/alien/

Monday, 9 May 2016

Merkuriuspassage 9 maj 2016

Från balkongen. Med ett Celestron Nexstar 4 och Nikon D90, utan adapter, taget på frihand genom okularet. Därav det dåliga ljuset.


Wednesday, 24 February 2016

Hur man slår av telemetri i Windows 10

Ars Technica har en hyfsat komplett guide vad det ser ut, kring att slå av den telemetri som skickas till Msoft: 
http://arstechnica.com/information-technology/2015/08/windows-10-doesnt-offer-much-privacy-by-default-heres-how-to-fix-it/

Skapa lokala användare i W10

Windows 10 försöker till varje pris se till att man skapar online-användare. Men det går fortfarande att skapa vanliga lokala användare: http://www.howtogeek.com/226540/how-to-create-a-new-local-user-account-in-windows-10/