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Ersa i-CON PICO: Getting rid of Error 8

I purchased an Ersa i-CON PICO soldering station just three months ago. Now it sporadically started to show the 'Err 8' screen. After each restart, everything was back to normal, though. Here's how I solved it (at least for now) by cleaning all relevant contacts.


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One-time temporary directories under Linux

Every so often I'm in need of a temporary directory. May it be to clone some git repo in order to copy a bunch of files, or to compile some modified source code without impacting my main build. Here's a little bash script I frequently use to create such a directory and wipe it after its (one-time) use.


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Fixing the USB plug of a DAB+ receiver

I've already had to return a PMT801 DAB+/Bluetooth receiver once because the USB receptacle has come off the PCB. Last time the device was still covered by warranty. This time it wasn't. So let's crack open the case and see if this can be fixed.


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Dimming the LEDs of a FRITZ!DECT 200

The AVM FRITZ!DECT 200 is a smart plug that measures power draw, can switch the attached load remotely and features a built-in temperature sensor that can be coupled to smart thermostats. It's a really useful device, weren't it for the fact that its LEDs are way too bright to meaningfully use it in a bedroom. Here's how to reduce their brightness.