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By Michal Novotný on August 13, 2021

Wall tablet or older smartphone is perfectly suited as a central indicator of the state of the home, as well as controlling it. It usually replaces the video doorbell and as example, you can play your favorite music or read recipes on it during cooking in your kitchen. In the article, we describe a functional example of such a "wall" tablet and its settings in so-called kiosk mode so, display doesn't run at night and only reacts when someone is nearby.

Centrální tablet nebo starší smartphone se perfektně hodí jako centrální ukazatel informací o stavu v domě a také k jeho ovládání. Zpravidla nahrazuje videovrátného a můžete si na něm pustit například oblíbenou hudbu při vaření nebo číst recepty. V článku popíšeme funkční příklad takového "wall" tabletu a jeho nastavení v tzv. kiosk módu, aby nesvítíl po nocích a reagoval jenom když je někdo poblíž.

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By Michal Novotný on November 28, 2020

The classic disk cloning tool in linux is the dd command. This command creates a image of disk or extracts the contents from the image to disk. The dd tool needs to be handled carefully and you need to understand its use. We'll show a more advanced technique of creating a disc image that contains unallocated space. A classic example is when I have a Raspbian operating system installed on a 250 GB disc, but there's only a tiny boot partition (e.g. sda1) and my own operating system partition (sda2) which together have 15 GB. Instead of saving a 250 GB image, I would like to save only two partitions with 15 GB, so that the image is smaller and can be expanded to 16 or 32 GB flash.

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By Michal Novotný on November 28, 2020

In this article you will find detailed instructions on how to connect to OpenVPN from iOS devices.

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By Michal Novotný on November 28, 2020

In this article you will find detailed instructions on how to connect to OpenVPN on Android.

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By Michal Novotný on November 28, 2020

If you have a smart-home, NAS, etc., it's a good idea to think about safe access to your network when you are not at home. Currently I recommend commercial router like Turris or a cheaper option of MikroTik routers. In the other hand, Raspberry Pi can be used as OpenVPN server too. In this article, we will show how to set up secure access to your home network from the internet using OpenVPN on MikroTik routers.

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By Michal Novotný on November 26, 2020

Native support for OpenHAB is provided by video intercom by Doorbird company. The solution is powered and connected by a UTP cable and has its own IP address to make it easier for you to install at the gate. OpenHAB is then able to import images from the intercom, visit history, manage gate opening on the button and by the phone, do not disturb feature during night, alarm feature etc. In the instructions we guide you how to use OpenHAB with Doorbird D101.

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By Michal Novotný on November 26, 2020

The HC-SR501 PIR sensor contains mechanical adjustement for detect range and time. But in an intelligent house, we want to be able change time how long the light will be active and change whether the light will be controlled by PIR or not. Below it's shown how to program the PIR sensor to enable this features.

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By Michal Novotný on November 24, 2020

In this article, you can find how to solve the measuring the water level in the reservoir (e.g. rainwater reservoir). The values are converted into the volume in liters. This enables you to fill the volume tank when needed or predict any other situations.

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By Michal Novotný on November 23, 2020

DALI (Digital Addressable Lighting Interface) is an open interface for lighting controls in the home, industrial buildings, public objects, etc. To connect to our OpenHAB system, we can use a commercial converter from ADFWEB called HD67941-B2 - DALI / MQTT - Converter. In the article, we will show how to use this converter in conjunction with MQTT.

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By Michal Novotný on November 23, 2020

Sometimes you need to edit SMB shared folders and add new location. In Samba, the configuration file smb.conf is the configuration file you should edit. Below it's described how to edit configuration as you want.

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By Michal Novotný on November 23, 2020

Local weather station allows you to track the exact direction and speed of the wind, the amount of rainfall but also the intensity of the sun's radiation. This information can be used, among other things, to protect interior of the house from the sun or wind and to decide on the garden irrigation. We will show you how connect commercial weather station with OpenHAB.

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By Michal Novotný on November 13, 2020

Need fixed IP address for OpenHAB? Simple guide will show you how to set static IP address on linux Debian systems like Raspbian. You can use same guido for ubuntu or other debian like linux systems.

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Best articles

Centrální tablet pro chytrý dům
Wall tablet to controll your smart homeRating: 
100%

Wall tablet or older smartphone is perfectly suited as a central indicator of the state of the home, as well as controlling it. It usually replaces the video doorbell and as example, you can play your favorite music or read recipes on it during cooking in your kitchen. In the article, we describe a functional example of such a "wall" tablet and its settings in so-called kiosk mode so, display doesn't run at night and only reacts when someone is nearby. Centrální tablet nebo starší smartphone se perfektně hodí jako centrální ukazatel informací o stavu v domě a také k jeho ovládání. Zpravidla nahrazuje videovrátného a můžete si na něm pustit například oblíbenou hudbu při vaření nebo číst recepty. V článku popíšeme funkční příklad takového "wall" tabletu a jeho nastavení v tzv. kiosk módu, aby nesvítíl po nocích a reagoval jenom když je někdo poblíž.

Jablotron and smarthome synchronization
Connecting Jablotron with OpenHABRating: 
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In this article we will show you how to install Jablotron binding in OpenHAB. This binding helps us to synchronize states from Jablotron alarm to OpenHAB. Typically, you can force to switch off lights, close water pipe and circulation, switch off sockets or whatever you want to do when you leave home and set alarm.

Advanced disk cloningRating: 
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The classic disk cloning tool in linux is the dd command. This command creates a image of disk or extracts the contents from the image to disk. The dd tool needs to be handled carefully and you need to understand its use. We'll show a more advanced technique of creating a disc image that contains unallocated space. A classic example is when I have a Raspbian operating system installed on a 250 GB disc, but there's only a tiny boot partition (e.g. sda1) and my own operating system partition (sda2) which together have 15 GB. Instead of saving a 250 GB image, I would like to save only two partitions with 15 GB, so that the image is smaller and can be expanded to 16 or 32 GB flash.

iOS OpenVPN Connection SettingsRating: 
0%

In this article you will find detailed instructions on how to connect to OpenVPN from iOS devices.

Android OpenVPN Connection SettingsRating: 
40%

In this article you will find detailed instructions on how to connect to OpenVPN on Android.

OpenVPN on MikroTik routersRating: 
100%

If you have a smart-home, NAS, etc., it's a good idea to think about safe access to your network when you are not at home. Currently I recommend commercial router like Turris or a cheaper option of MikroTik routers. In the other hand, Raspberry Pi can be used as OpenVPN server too. In this article, we will show how to set up secure access to your home network from the internet using OpenVPN on MikroTik routers.

Video intercom Doorbird in OpenHABRating: 
0%

Native support for OpenHAB is provided by video intercom by Doorbird company. The solution is powered and connected by a UTP cable and has its own IP address to make it easier for you to install at the gate. OpenHAB is then able to import images from the intercom, visit history, manage gate opening on the button and by the phone, do not disturb feature during night, alarm feature etc. In the instructions we guide you how to use OpenHAB with Doorbird D101.

Advanced PIR sensors features in OpenHABRating: 
0%

The HC-SR501 PIR sensor contains mechanical adjustement for detect range and time. But in an intelligent house, we want to be able change time how long the light will be active and change whether the light will be controlled by PIR or not. Below it's shown how to program the PIR sensor to enable this features.

Measure tank level water OpenHAB
Measuring the water volume in reservoirRating: 
100%

In this article, you can find how to solve the measuring the water level in the reservoir (e.g. rainwater reservoir). The values are converted into the volume in liters. This enables you to fill the volume tank when needed or predict any other situations.