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Raspberry Pi: disable Wi-Fi powersave, and stay connected all the time

Recently I installed a Raspberry Pi with Raspbian, and attached a touchscreen to it. The device is supposed to work as a display for our openHAB home automation system. All nice and shiny, except the Pi occasionally disconnects from the Wi-Fi - apparently in order to safe power. Once the network device is needed, the Wi-Fi is reconnected. That is the default setting.

That is quite annoying, because the HABpanel will lose it’s connection to the openHAB server, and no longer show widget updates. Some widgets like “time” will just continue to work, but other widgets like status of the washing machine, or the current outside temperature just show the last state, and never update.


Huawei P10

It was time to pick a new mobile phone for myself. Not being very happy with the Samsung I have from my employer, I compiled a list of decent Android phones, and looked into each of them. In the end, I settled with the Huawei P10.


How to prioritize Wi-Fi connections on Android

At home I have two different Wi-Fi networks, both known to all my mobile devices. One is our internal network, password protected. The other one is an open Freifunk network. It’s nice to walk around in the village and automatically connect to other Freifunk Wi-Fi routers, instead of using expensive mobile data.

But when at home I really want my devices connected to our internal network. Makes it easy to copy files between devices, or access services only available in our internal network. Plus the native Wi-Fi connection is much faster than the Freifunk connection, which is limited by the speed of the VPN.


Most annoying Samsung mobile "features"

Android is a very nice operating system, people like it because it’s highly configurable. One of the major players in this game - Samsung Mobile - annoys it’s users with certain “features”, which you mostly can’t switch off or get rid off.

Even more annoying - for me - that’s the only Android option I get offered by my employer. The alternatives are iPhone, or Blackberry. So not really an option. Two years ago I switched to a Samsung S3, and a few weeks ago it was time to renew the contract, so¬†shortly before Christmas there was a box with a shiny new S5 waiting for me in the office. Using the new mobile for two weeks now, I realized that Samsung remains true to themself and added more annoying functionality over the past two years.

Samsung is churning out dozens of different mobile devices every year. Maybe they should hire a few User Interface designers, or simply start using their own stuff, and see how annoying it is to use.