Open Window Indicator

Published 20 November, 2016
Open Window Indicator

If you forget to close the window after using the bathroom in the colder days, you'll waste a lot of energy. If you don’t open your windows yours rooms will get sticky and possibly will mildew. Therefore I needed a reminder indicator when I forget to close the windows.

The RheinEnergie (a local energy provider) and the TH Köln (technical university) are doing a study on the usage of their smart home system. It is based on the Qivicon from Telekom.

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Refurbishing a Woodturning Lathe

Published 22 November, 2016
Woodturning Lathe

It is possible to buy old and cheap woodturning lathes. You can just clean and brush them, but it‘s not that hard to give it some new features: Emergency stop, frequency control with ramps, start/stop push button and main switch.

Of course it starts with the cleaning. Some parts of the metal had to be welded because they were too rusted. The drills for the switches and mountings were made.

After this, the lower part, not the upper (it was well enough), was painted with a hammered finish.

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