Category: miscellaneous and news

Technik & mehr von damals und heute

Repairing a TRADFRI smart plug – When the relay goes haywire

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A quick note: Parts of the wording in this post were drafted with the help of AI. … (clearly recognizable in the style: A repair story from the world of smart Swedish furniture. The symptom: click-click-click… As so often happens, it started with an annoying noise. My TRADFRI socket from the big Swedish furniture store…
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Motorized TV ceiling mount control via Home Assistant

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Since I’ve been working on home automation, I’ve naturally wanted to optimize and simplify as much as possible and adapt and implement it in line with the new buzzwords “green electronics”, “sustainability”, “energy-saving” … and so on. For example, my appliances switch off when they are not used or ignored, stand-by energy consumption is largely…
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LAN for Pylontech PV-batterystatus, OpenDTU and more in HomeAssistant

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In the article “Pylontech PV battery status in HomeAssistant”, I had improved the project “Pylontech battery monitoring” of the following GitHub links and drew a circuit board to make the whole construct a little more compact and professional. https://github.com/irekzielinski/Pylontech-Battery-Monitoring https://github.com/hidaba/PylontechMonitoring All battery data of the Pylontech battery modules are displayed in the Homeassistant. Great! But…
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When the brush stops turning – or: Repairing the Kärcher FC7

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“Freshly mopped floors without having to vacuum beforehand: The FC 7 Cordless hard floor cleaner removes all types of dry and damp everyday dirt in one step.” (Original text kaercher.com) You get this product promise on the manufacturer’s website if you are interested in the FC7 electric hard floor cleaner. However, when this promise is…
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Geiger counter – kit from the Far East

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II am always fascinated by the topic of radioactivity. More precisely, it is the measurement or detection of this ionizing radiation, which is produced by the decay and of atomic nuclei with the release of energy. A basic distinction is made between the energy (alpha and beta particles) emitted by the movement of the decaying…
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Pylontech PV battery status in the HomeAssistant

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Anyone who has installed a photovoltaic system in their own home may even use an energy storage system. In this example, it is an off-grid system equipped with two modules from the manufacturer Pylontech. The Pylontech US3000C batteries have an output voltage of 48V. The nominal capacity is 3500Wh. The installed cells are LiFePO4 cells…
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Read EVU smart meters with ESP32 and ESPhome and use them in Homeassistant

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edit 7.11.24 In the meantime, I have also layouted an interface board with a USB type B socket for the 5V supply. (see layout below). Because as small and fine as the micro USB plugs are, I need something more robust. As I am asked more and more often for the production data, I am…
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What are DeepFakes?

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This post has absolutely nothing to do with retro this time. My colleague from the Multimedia major has been working on the topic of DeepFakes and has put a lot of effort into creating a great video. Here is the link to the video:

Keysight oscilloscope dies in standby – power supply repair

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An interesting problem has arisen with the measurement technology in the laboratories at my workplace. I use the term “measurement technology” to describe the equipment of a laboratory workstation for basic training. There are a total of nineteen laboratory workstations, each equipped with two laboratory power supplies, two desktop multimeters, a Keysight signal generator and…
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Integrating the heat pump (NEURA) into the Smarthome

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A smarthome is no longer a rarity today and is very widespread. There are countless systems on the market that make your own home “smart”. The digital voice assistants from Google, Amazon and co. in conjunction with smart light bulbs are among the systems that are easy and quick to install. But there are also…
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