#openhab Wechsel von Raspberry zu Debian VM hat keine 5 Minuten gedauert, dank openhabian Backup. Damit hab ich nicht gerechnet 🔝
Plus: openhab 5 schleift soviele Ecken und Kanten, dass es mittlerweile grandios einfach ist, ein "smartes Home" ohne Datenschutzprobleme oder Vendor-Lockins zu haben 👍
#Velbus turned out to be the rock solid open home automation system, easy to extend and easy to integrate. #OpenHAB link? No problem. #HomeAssistant? No problem. Industrial 4..20mA or 1 to 10 V sensors? No problem. Relay output/input? No problem. Power measurement, access control, RGBW LED lights, meteo station to control window blinds. So far I could not find anything that can't be done with Velbus and OpenHAB 😍 I started a page to gather all Velbus related info: https://velbus.wiki
Starting to think that using #OpenHAB for my "smarthome" for my case is kinda overkill…
I have some sensors (temperature and humidity), some reed switches for windows and possibly I'll add thermostats for heating batteries (because here, even with 0°C outside, the central heating works for all the money and it is impossible to sleep and work without all opened windows). All things are using #ZigBee so my #server uses some ZigBee coordinator dongle and #zigbee2mqtt with some MQTT broker inside. I already able to read all necessary data from sensors by reading the right MQTT topics.
And the OpenHAB just communicates with my MQTT broker and displays some nice widgets on the Web UI. This is cool, because I don't need to think about how to work with MQTT and how to output data — all somehow works "by magic".
But the price is very big. The OpenHAB eats near 600 MB of RAM and swaps a lot (near 1 GB for now). It is a largest memory consuming service in my server, which has only 2 GB of RAM (and a RAM prices already increased here :drgn_sigh: ). And also it's sandbox takes near 3.5 GB of SSD space.
So, do I really need not to think about how it all works under the hood while wearing out my SSD or get some services OOMed if I disable swap and start e.g. using BorgBackup? Looks like the game is not worth the candle. I can literally pick #EclipseMosquitto #C library, unwrap some memories about how to use CGI and get the same nice page with sensors data and some logic inside. But with a waaaay less memory footprint and with possibility to open this page from #Dillo :drgn_happy_blep:
Send Text Messages to Samsung Smart TV (C/D Series: https://community.openhab.org/t/send-text-messages-to-samsung-smart-tv-c-d-series/167547
Samsung TVs (C and D series from 2010-2011) have a hidden MessageBoxService that lets you display popup notifications on screen. Yep - my 32C6000 still works: "old, but not obsolete" [T-800]: http://www.youtube.com/watch?v=0qLvUsovORI
VERY LOW POWER and compact #domotica module with 3 #relay + 5 #input working with #homeassistant #NodeRED #OpenHAB #domoticz #MQTT #ModbusRTU www.creasol.it/DomBus21
#relay module for #homeassistant #NodeRED #OpenHAB #domoticz #MQTT #ModbusRTU : very very low power, reliable, easy wiring. Check our PDF catalog: https://www.creasol.it/catalog?md
At this weekend I finally established another network in my home — a ZigBee network. A looong time ago (in 2010 year) I touched the ZigBee networking in my university (ITMO, previously IFMO, in Saint-Petersburg) — these times it was a new technology, not used widely. And as a student I have some fun time playing with ZigBee main router, supplemental router and end-devices. You can view old photos and screenshots of old software on a my extremely old blog: http://h0rr0rr-drag0n.blogspot.com/2010/04/cc2530zdk.html (and read a blogpost, if you understand Russian).
It is kindly fascinating, that now, after 15 years, I can just buy some ZigBee-powered devices from AliExpress (using Black Friday discounts) and connect them to the network inside my house right in the way I did it in the university 15 years ago!
Sadly, although I bought native supported main router device, based on the EFR32MG2 with some software from Ember (EZSP v8) inside, the OpenHAB doesn't support this device natively — it supports it, but since my server is running NetBSD, I got problems with some bundled with OpenHAB things. Looks like some native libraries (rxtx-java) don't have bundled NetBSD versions. And the same library in the repository built for Java 8, not for Java 17.
So, I decided to use Zigbee2MQTT, not to build the necessary Java library myself. It was kinda scary — use program, which connects my ZigBee network via ZigBee USB-dongle to the MQTT server — which is written on JavaScript :drgn_hide: . Not on the C (as I can totally understand, for a such low-level program, operating with embedded devices) or at least on the C++/Perl/Python/whatever. But, looks like it works good enough, if I don't try to pair the device in wrong mode (my window sensors has two modes to pair them with network: first "common" mode causes zigbee2mqtt to silently crash and the second "compatible" mode works without problems).
And I could understand now, why people has so much problems with smart home security. Installed MQTT server mosquitto — it allows unauthenticated connections by default. Installed zigbee2mqtt — it allow connections to frontend without any password by default :drgn_sigh:
At least these two services don't each much memory: 1.2 Mb for Mosquitto and 75.6 Mb for ZigBee2MQTT.
For now, my ZigBee sensors works pretty well and robust, like these devices from university 15 years ago :drgn_aww:
Lol, I just enabled my electrical stove to make some coffee :drgn_hide: The humidity in the room rapidly decreased as a result (and a temperature increased, of course)
@kevin my stack includes, #Nextcloud, #Mailcow, #Gitlab, #Jekyll, #Omeka, #zigbee2mqtt and #Openhab
Whats yours?
https://www.creasol.it/EVSEHA
Domotic module to make a EV charging station by yourself, working with #homeassistant #domoticz #nodered #openhab #iobroker #mqtt #modbusRTU
DomBus31: 8 relay outputss, only 15mW in standby, 600mW with all 8 relays on! Suitable for Home Assistant, Domoticz, NodeRED, OpenHAB, ... https://www.creasol.it/catalog?db31md
#homeassistant #nodered #modbusRTU #MQTT #domoticz #OpenHAB
Compact module for #homeassistant #openhab #iobroker #domoticz #mqtt ...
Full catalog: www.creasol.it/catalog
Lil guide about OpenHAB4 installation into the NetBSD sandbox.
https://eugene-andrienko.com/it/2025/11/07/install-openhab4-to-netbsd.html
DomBusTH, compact board with #temperature and #humidity sensors, 3 LEDs for notifications, #touch sensor and 6 I/Os to connect pushbuttons, alarm sensors, buzzer, ...
www.creasol.it/DomBusTH
store.creasol.it/DomBusTH
Works with #domoticz #homeassistant #nodered #openhab #iobroker #mqtt #modbusrtu
The new #openhab cuevox rule interpreter has been released. This version allows to parse the interpretation result as JSON, a contribution I made.
https://community.openhab.org/t/cuevox-a-rule-based-voice-interpreter-4-0-0-0-4-9-9-9/161308
I use this feature to achieve local voice control in OpenHAB as described here:
https://dantalion.nl/2025/05/17/openhab-local-voice-control.html#1-installing-add-ons-from-openhab-and-its-community-marketplace
Now with this release, the instructions to install the package using npm can be ignored and the OpenHAB marketplace can be used. I'll update it soonish TM.
Hast du schon mal dein Smart Home auf die Probe gestellt? 🤔 Oftmals ist das Versprechen von einfacher Automatisierung leider nur die halbe Wahrheit! Der Einstieg kann ganz schön knifflig sein und mit frustrierenden Momenten versehen. Was waren deine größten Herausforderungen beim Aufbau? Lass uns mal drüber reden! 💬 #SmartHome #HomeAssistant #ioBroker #OpenHAB #Technik
In #openhab version 5 you can now set aggregate graphs to default to `differenence of firsts` or `difference of lasts` allowing to visualize differences per hour, day, month.
Mit den Daten der neuen #Wärmepumpe im #openHAB herum zu spielen macht Spaß. Ich hatte noch nie einen so genauen Einblick, was die Heizung gerade macht (und in der Vergangenheit getan hat). Dadurch kann ich den Verbrauch viel besser optimieren als bisher.
Die Effizienz sieht jetzt schon ziemlich gut aus. Bei einer aktuellen Außentemperatur von 10-15°C berechne ich einen COP von 4,2 für Heizen, 2,8 für Warmwasser und insg. 3,9.
