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  • COMMAIK
    • Contact Form
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  • The Villa
    • The top floor
    • The upper floor
    • The first floor
    • The cellar
    • The garden
  • Stories from the construction
    • irrigation
    • Photovoltaics
    • Pool and terrace
    • SmartHome
    • The planning
    • The demolition
    • The installation
    • Machinery
    • Restoration and working techniques
    • This and that
  • Videos
    • Build & Renovate
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    • Carport
    • Gabions
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    • Garden kitchen
    • Pool
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  • Reolink Duo 3 WiFi & PoE review: Smart UHD surveillance camera with 180° field of view

    A man stands in front of a backyard with a pool, thinking. Two Reolink Duo 3 security cameras—PoE and WiFi—are displayed, showcasing the latest in Reolink surveillance. The Reolink logo appears at the top right. www.commaik.de

    The Reolink Duo 3 WiFi & PoE offers innovative technology for every surveillance need. With 16MP ultra HD resolution, 180° panoramic view and intelligent motion detection, they provide first-class security day and night. In this article, I compare the two models, discuss their strengths and show which camera is best suited for which application.

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    A man stands on the left, fist raised, next to a large Reolink Argus security camera and solar panel. In the background, a modern backyard with a swimming pool is visible, with the Reolink logo in the top right. www.commaik.de

    Reolink Argus 4 Pro review: The wireless surveillance camera with 4K and ColorX technology

    8. July 2024
    Close-up of two wire connectors and a cut green boundary wire on grass, with wire cutters and a plier nearby; white stones are visible in the background. www.commaik.de

    Repairing broken wires: Finding and repairing the boundary wire for robotic lawnmowers

    23. November 2024
    Various X-Sense smoke detector products, their packaging, mounting stickers, and a fire extinguisher are arranged on a wooden table with tools hanging on a pegboard in the background. www.commaik.de

    Network wireless smoke detectors across several floors: How X-Sense Link+ protects your whole house!

    21. July 2025
  • Kroak TB2 diesel parking heater 8kW: Unboxing, test & possible applications

    A man in a black jacket points to the inside of a black, box-shaped electronic device with wires, next to a similar device with the inscription "KROAK TB2" on a gray background. www.commaik.de

    The KROAK TB2 diesel parking heater is a versatile and efficient diesel heater that is perfect for use in the workshop, when camping or in the garden shed. In this article, I will show you how this mobile heating box impresses with its compact design and simple installation. I also share my experiences on the performance, consumption and control options of the heating box and why the heating case is an ideal all-in-one solution for cold days.

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    Graphic featuring multiple Reolink security cameras and a video recorder on a gray background, with “Reolink Firmware Update?!” highlighted in bold text at the center. www.commaik.de

    Update Reolink firmware quickly and safely: Step-by-step guide for cameras and NVRs

    7. February 2025
    A person stands on a rooftop with solar panels and a balcony power plant, pointing toward a graphic showing a Zendure SuperBase energy storage unit. A modern house and trees are visible in the background. www.commaik.de

    Optimize balcony power plant – New modules and 220V battery storage for maximum efficiency

    26. July 2024
    A robot mower glides across a well-manicured grassy lawn bordered by white gravel, with a patio area and outdoor chairs visible in the background. www.commaik.de

    Robot lawn mower without boundary wire in test: The best models in comparison

    26. February 2025
  • Upgrading the diesel parking heater: Installing a tank extension for the mobile heating box

    A man points at a metal heating box containing machinery and a yellow fluid tank; a large white arrow indicates transferring liquid from a red fuel container into the parking heater. www.commaik.de

    The original parking heater in my mobile heater box was equipped with a small tank, which severely limited the heating time. To solve the problem, I fitted the diesel heater in my aluminum box with a larger fuel tank. In this article, I describe step by step how I installed the new 10-litre tank, optimized the heating box and achieved a constant heat supply for my animal house. I share my experiences, tips and challenges, from planning and installing the tank extractor set to the first successful test

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    A 4K PTZ Reolink security camera monitors a man walking towards a large house at dusk. A digital overlay highlights the camera's facial recognition and zooms in on the man's face with a blue square frame. www.commaik.de

    The best Reolink 4k PTZ surveillance cameras in comparison: 823S2 vs 823S1 vs TrackMix vs TrackFlex in test

    27. February 2026
    Partially completed garden kitchen with unfinished wooden cabinets, a dark worktop, an open window, and power tools on the counter. Trees and buildings can be seen outside. www.commaik.de

    Build your own garden kitchen – worktop and jamb for the outdoor kitchen

    20. May 2024
    A portable hcalory diesel heating unit sits inside a metal box with an open lid, next to a light gray wooden wall. Various hoses and a fuel tank are visible, along with ventilation pipes extending from the box. www.commaik.de

    Hcalory TB MAX 8 kW diesel heater in a practical test – compact all-in-one heater for camping, workshops and motorhomes

    9. November 2025
  • Installing a mobile diesel parking heater in the garden shed

    A metal heating box with hoses attached sits open next to a building, revealing machinery and a plastic container inside; the box appears to be an outdoor equipment unit or possibly a parking heater. www.commaik.de

    In my search for an efficient and self-sufficient heating solution for my garden shed, I decided to build a mobile heating box with a diesel parking heater. My aim was to create a compact, weatherproof and flexible heating box that not only reliably heats my animal house, but can also be used in the camper, motorhome or for other projects. With the 8kW diesel parking heater, I was able to implement a powerful yet economical solution that provides constant heat even at temperatures of -10°C. In this article, I describe how I planned, built and installed the heating box and share my practical experience from the first tests

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    A man stands beside images of a backyard with a pool. A Reolink Trackmix PoE security camera is shown on the left, with the Reolink logo at the top right and smart home icons above the garden scene. www.commaik.de

    Reolink TrackMix PoE – 4K dual lens surveillance camera review

    20. July 2024
    Open trench in a paved area with exposed cables, pipes, and a water pipe in the garden, surrounded by loose soil, bricks, and paving stones—signs of ongoing underground utility or lawn irrigation work. www.commaik.de

    Laying the water pipe in the garden: tips for connecting the water supply to the garden irrigation system

    10. March 2025
    A gloved hand holds a white stick near a moldy wall. On the wooden floor, a silver packet labeled NOVUstick für nachträgliche Horizontalsperren contains 10 sticks for creating an effective horizontal barrier and improving drainage. www.commaik.de

    Drainage – retrofitting a horizontal barrier yourself

    24. January 2024
  • Build your own mobile heating box: The best DIY solution with an 8kW diesel parking heater

    A heating box containing technical equipment, including a white plastic tank with a blue cap, wiring, and black components, is open on a stand in a workshop with wooden walls. www.commaik.de

    I have built a mobile heating box with an 8kW China Diesel parking heater that can reliably heat animal houses, garden sheds, campers and tents. The heater box had to be compact, weatherproof and mobile, but at the same time offer enough space for the diesel heater, fuel tank and accessories. In this article, I describe how I planned the heating box, installed the diesel heater and finally put the box into operation, and share my building instructions and my experiences as well as practical solutions.

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    A patch of grass with a hole dug in the soil, exposing underground cables for a robot lawn mower. Nearby are an orange cable locator tool, wires, a white hose, and two blue wire connectors. www.commaik.de

    Robot lawn mower – Find and repair a broken control cable easily

    19. January 2024
    A modern backyard with a rectangular pool, surrounded by gray tiles. There’s a covered terrace with bar stools, a small palm tree, and a blue shed in the background. www.commaik.de

    Build your own pool terrace with stone slabs on a slope

    8. June 2025
    Black pipes on a rooftop pool heating system in the foreground, with a backyard swimming pool, lawn, stone wall, blue shed, and covered seating area in the background on a sunny day. www.commaik.de

    Pool heating with ribbed pipe systems – Build your own solar heating for the pool

    13. April 2025
  • Diesel parking heater for animal house, workshop and camper: My test of the Vevor 8kW heater

    A red and black portable parking heater is displayed on a table with its components, including hoses, wires, a remote, clamps, a silver exhaust pipe, a vent, and a small black bottle in a wooden workshop setting. www.commaik.de

    A diesel parking heater provides efficient warmth for the animal house, workshop and camper – especially on icy winter days. My previous electric heating solution quickly reached its limits at temperatures below -15°C, as the photovoltaic island system could not supply enough energy for the fan heater when there was little sunshine. To reduce the high electricity costs and find a reliable solution for heating the animal house, I opted for the mobile Vevor 8kW diesel parking heater. In my test, I show you how this heater works and why it is ideal for keeping your garden shed, car or roof tent warm in winter. Before I integrated the Chinese…

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    Lawn irrigation system components, including pipes, valves, and wiring, are laid out on the ground next to an open valve box in a grassy area. A green garden hose and plastic cover are also visible. www.commaik.de

    Installing lawn irrigation: Valve box, Hunter solenoid valves and Rain Bird water distribution in detail

    1. March 2025
    The dreame a1 pro, a modern robotic lawn mower with a sleek grey design, operates on a grassy lawn, with a building and potted plants visible in the background. www.commaik.de

    Dreame A1 Pro in test – Cordless robotic lawnmower without boundary wire & RTK

    24. May 2025
    A man thoughtfully poses in front of images of the Argus Eco Ultra cameras, a solar panel, and a backyard pool. The Reolink logo is at the top right, with "Argus Eco Ultra" displayed prominently in bold text. www.commaik.de

    Reolink Argus Eco Ultra review: 4K rechargeable surveillance camera without subscription

    17. February 2025
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Autor & Blogger

In this construction diary, we share our experience in the renovation and modernization of our Art Nouveau villa and hope to give a few suggestions and tips to some of you.

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