# For developers **URL:** https://forum.velbus.eu/c/development/95.md [Latest](https://forum.velbus.eu/latest.md) · [Categories](https://forum.velbus.eu/categories.md) --- ## [Official GitHub repository](https://forum.velbus.eu/t/official-github-repository/14828)
**Author:** [@VEL448](https://forum.velbus.eu/u/VEL448)\ **Replies:** 0\ **Last updated:** [November 14, 2017, 1:42pm UTC](https://forum.velbus.eu/t/official-github-repository/14828 "2017-11-14T13:42:22Z")
Our official GitHub repository can be found at https://github.com/velbus/ The repository is our way to communicate official documentation and tools to the community. Current available repositories Packet protocol wh… --- ## [About the For developers category](https://forum.velbus.eu/t/about-the-for-developers-category/14827)
**Author:** [@VEL448](https://forum.velbus.eu/u/VEL448)\ **Replies:** 0\ **Last updated:** [November 14, 2017, 1:36pm UTC](https://forum.velbus.eu/t/about-the-for-developers-category/14827 "2017-11-14T13:36:13Z")
A place to discuss the integration of Velbus into a variety of systems. This category is intended for advanced users such as developers that integrate Velbus into their own system. The main language for this category i… --- ## [Bridging Velbus segments or Galvanically Isolating segments](https://forum.velbus.eu/t/bridging-velbus-segments-or-galvanically-isolating-segments/18142)
**Author:** [@MDAR](https://forum.velbus.eu/u/MDAR)\ **Replies:** 11\ **Last updated:** [August 21, 2026, 1:30pm UTC](https://forum.velbus.eu/t/bridging-velbus-segments-or-galvanically-isolating-segments/18142 "2026-08-21T13:30:15Z")
If anyone is interested, after many days and I dread to think how many AI Tokens, Claude.ai has managed to take @jeroends VelServ C++ code and adapted it for ESP32S3 with PoE Micro-Python. The result is a Velbus TCP se… --- ## [New Node-RED Velbus palette (V0.13.4)](https://forum.velbus.eu/t/new-node-red-velbus-palette-v0-13-4/18129)
**Author:** [@MDAR](https://forum.velbus.eu/u/MDAR)\ **Replies:** 5\ **Last updated:** [July 15, 2026, 11:51am UTC](https://forum.velbus.eu/t/new-node-red-velbus-palette-v0-13-4/18129 "2026-07-15T11:51:10Z")
Hello everyone I have been talked into giving AI programming a go and thought I’d give it a meaty project to get started with. As Gert sold his Velbus home some years ago, the NodeRed Velbus palette is in need of an ov… --- ## [VelbusLink on linux/macos](https://forum.velbus.eu/t/velbuslink-on-linux-macos/17138)
**Author:** [@PrzemoF](https://forum.velbus.eu/u/PrzemoF)\ **Replies:** 31\ **Last updated:** [May 12, 2026, 9:29am UTC](https://forum.velbus.eu/t/velbuslink-on-linux-macos/17138 "2026-05-12T09:29:49Z")
I did some homework and looks like currently there is no VelbusLink version for linux/macos. I consider that a shame :slight\_smile: as one of the things that pushed me from KNX to Velbus was that KNX requires running win… --- ## [TPC/IP connection Velserv - Velbuslink not working](https://forum.velbus.eu/t/tpc-ip-connection-velserv-velbuslink-not-working/17488)
**Author:** [@jvelbus](https://forum.velbus.eu/u/jvelbus)\ **Replies:** 25\ **Last updated:** [January 19, 2026, 9:11am UTC](https://forum.velbus.eu/t/tpc-ip-connection-velserv-velbuslink-not-working/17488 "2026-01-19T09:11:12Z")
Hi everyone, I want to connect my Velbuslink via TCP/IP. I did install the Velserv on my Pi4B. I recently updated from OH 2.5 to OH 4.1. In OH 2.5 I could connect without any porblem but after the new OH 4.1 (building … --- ## [Velbus binding for OpenHAB](https://forum.velbus.eu/t/velbus-binding-for-openhab/14992)
**Author:** [@cedricb](https://forum.velbus.eu/u/cedricb)\ **Replies:** 304\ **Last updated:** [December 31, 2025, 12:10pm UTC](https://forum.velbus.eu/t/velbus-binding-for-openhab/14992 "2025-12-31T12:10:19Z")
Hi, I created a pull request for a Velbus binding for OpenHAB. It still has to be reviewed and merged, but you can already try it by putting the compiled jar in your OpenHAB addons folder. The readme file can be found… --- ## [Homeassistant error log](https://forum.velbus.eu/t/homeassistant-error-log/17912)
**Author:** [@joweerdt](https://forum.velbus.eu/u/joweerdt)\ **Replies:** 9\ **Last updated:** [August 22, 2025, 9:53am UTC](https://forum.velbus.eu/t/homeassistant-error-log/17912 "2025-08-22T09:53:33Z")
I see issues every second in my log file. The warnings are related to velbus, the errors I dont know: 2025-08-12 09:38:02.761 WARNING (MainThread) \[velbus-handler\] NOT FOUND IN command\_registry: RawMessage(priority=f… --- ## [A NodeJS API for Velbus (need TCP connexion)](https://forum.velbus.eu/t/a-nodejs-api-for-velbus-need-tcp-connexion/17517)
**Author:** [@Golfy](https://forum.velbus.eu/u/Golfy)\ **Replies:** 10\ **Last updated:** [August 10, 2025, 4:19pm UTC](https://forum.velbus.eu/t/a-nodejs-api-for-velbus-need-tcp-connexion/17517 "2025-08-10T16:19:44Z")
I took some time to create an MVC application able to respond as a Restful API. You may have some part to remove or change (MySQL server information in .env). The program is able to listen to others UDP connexion (in m… --- ## [Feedback of program-status](https://forum.velbus.eu/t/feedback-of-program-status/17901)
**Author:** [@ES9830](https://forum.velbus.eu/u/ES9830)\ **Replies:** 2\ **Last updated:** [August 8, 2025, 6:35am UTC](https://forum.velbus.eu/t/feedback-of-program-status/17901 "2025-08-08T06:35:36Z")
I have the following two buttons in my Velbus installation: “On Holiday” and “Back Home”. The “On Holiday” button sets the feedback lighting on certain switches to ‘red flashing’ using action code 1702. There also need… --- ## [How-To : Install and Run VelServ - a Velbus TCP Gateway](https://forum.velbus.eu/t/how-to-install-and-run-velserv-a-velbus-tcp-gateway/15422)
**Author:** [@MDAR](https://forum.velbus.eu/u/MDAR)\ **Replies:** 117\ **Last updated:** [July 7, 2025, 7:22am UTC](https://forum.velbus.eu/t/how-to-install-and-run-velserv-a-velbus-tcp-gateway/15422 "2025-07-07T07:22:41Z")
In this How to, @jeroends and I will try to briefly explain how to download, compile and auto-start VelServ. A simple and effective Linux TCP server for Velbus. If you are a Windows user and need a TCP server for Velbu… --- ## [Bose soundtouch on Oled](https://forum.velbus.eu/t/bose-soundtouch-on-oled/17876)
**Author:** [@DavidJ](https://forum.velbus.eu/u/DavidJ)\ **Replies:** 4\ **Last updated:** [July 6, 2025, 7:49am UTC](https://forum.velbus.eu/t/bose-soundtouch-on-oled/17876 "2025-07-06T07:49:30Z")
Hi all, I have a question. I have at home 2 bose soundtouch soundlinks, and i want to display the info of “now playing” on the oled with the memo function. The soundtouch is integrated in Home assistant. In home assist… --- ## [Issue with integration to home assistant using USB](https://forum.velbus.eu/t/issue-with-integration-to-home-assistant-using-usb/17841)
**Author:** [@JDB](https://forum.velbus.eu/u/JDB)\ **Replies:** 27\ **Last updated:** [July 5, 2025, 7:29am UTC](https://forum.velbus.eu/t/issue-with-integration-to-home-assistant-using-usb/17841 "2025-07-05T07:29:25Z")
I’m currently starting with home assistant. In my home I have a Velbus installation with quite some modules and panels. I have a raspberry pi 5 running HA OS hooked up to my system. After installing the Velbus integratio… --- ## [Bridging Velbus with TCP through snap package](https://forum.velbus.eu/t/bridging-velbus-with-tcp-through-snap-package/15814)
**Author:** [@VEL448](https://forum.velbus.eu/u/VEL448)\ **Replies:** 33\ **Last updated:** [June 23, 2025, 9:32pm UTC](https://forum.velbus.eu/t/bridging-velbus-with-tcp-through-snap-package/15814 "2025-06-23T21:32:44Z")
Hello everyone We’ve made a snap package to easily run a Velbus TCP gateway on any snapd-compatible Linux distribution. To install, simply run these two commands; snap install velbus-tcp snap connect velbus-tcp:raw-u… --- ## [Own homeassistant linked to Signum](https://forum.velbus.eu/t/own-homeassistant-linked-to-signum/17795)
**Author:** [@Dreetn](https://forum.velbus.eu/u/Dreetn)\ **Replies:** 16\ **Last updated:** [June 2, 2025, 3:46pm UTC](https://forum.velbus.eu/t/own-homeassistant-linked-to-signum/17795 "2025-06-02T15:46:57Z")
Hey everyone, I’ve made good progress figuring out the APIs and connection settings for the Signum, and I can now trigger actions through the APIs (still in the early stages, but it seems to be working). However, I’m no… --- ## [Custom module problems in Home Assistant integration](https://forum.velbus.eu/t/custom-module-problems-in-home-assistant-integration/17638)
**Author:** [@lgor](https://forum.velbus.eu/u/lgor)\ **Replies:** 11\ **Last updated:** [May 14, 2025, 12:24am UTC](https://forum.velbus.eu/t/custom-module-problems-in-home-assistant-integration/17638 "2025-05-14T00:24:38Z")
I recently developed a custom Velbus module for controlling pumps and heating for my pool. I therefore mimic the VMB4AN module so I can transmit alarms and measured temperatures onto the Velbus. This all works fine up to… --- ## [Bug: VMBDALI-20 'Set previous dim value (0x11)' not working](https://forum.velbus.eu/t/bug-vmbdali-20-set-previous-dim-value-0x11-not-working/17783)
**Author:** [@pvrobays](https://forum.velbus.eu/u/pvrobays)\ **Replies:** 3\ **Last updated:** [May 6, 2025, 8:45am UTC](https://forum.velbus.eu/t/bug-vmbdali-20-set-previous-dim-value-0x11-not-working/17783 "2025-05-06T08:45:41Z")
Hi community! I think I’ve detected a very annoying bug with the VMBDALI-20. I hope this is the right place to put this. Scenario: Set a DALI dimmer light to its maximum: Set dim value to 254. The VMBDALI-20 answers … --- ## [Home Assistant](https://forum.velbus.eu/t/home-assistant/14666)
**Author:** [@tdelaet](https://forum.velbus.eu/u/tdelaet)\ **Replies:** 55\ **Last updated:** [April 23, 2025, 6:04am UTC](https://forum.velbus.eu/t/home-assistant/14666 "2025-04-23T06:04:52Z")
Hey, I've integrated Velbus support with Home Assistant as of version 0.50 See this link for announcement / more information. Happy to get your thoughts/improvements. --- ## [Velbus Home Assistant missing module instances](https://forum.velbus.eu/t/velbus-home-assistant-missing-module-instances/17402)
**Author:** [@lgor](https://forum.velbus.eu/u/lgor)\ **Replies:** 33\ **Last updated:** [February 25, 2025, 5:50pm UTC](https://forum.velbus.eu/t/velbus-home-assistant-missing-module-instances/17402 "2025-02-25T17:50:01Z")
I have a Velbus integration with Home Assistant which works perfect with limited number of modules. However when I connect to my actual installation (= 69 modules) I am missing a number of modules. Is any body else exper… --- ## [Velbus configuration map software](https://forum.velbus.eu/t/velbus-configuration-map-software/17667)
**Author:** [@ES9830](https://forum.velbus.eu/u/ES9830)\ **Replies:** 1\ **Last updated:** [January 15, 2025, 12:42pm UTC](https://forum.velbus.eu/t/velbus-configuration-map-software/17667 "2025-01-15T12:42:42Z")
I found a topic on the forum by “solivi” with a reply from “VEL448”. The topic is from November 1, 2010 (more than fourteen years ago). The title is “Need VELBUS configuration map software.” Does this really exist? I… --- ## [Graphical design tool](https://forum.velbus.eu/t/graphical-design-tool/17651)
**Author:** [@ES9830](https://forum.velbus.eu/u/ES9830)\ **Replies:** 14\ **Last updated:** [January 13, 2025, 1:12pm UTC](https://forum.velbus.eu/t/graphical-design-tool/17651 "2025-01-13T13:12:15Z")
I have created several drawings illustrating the functionality of some components in my installation (see attachment). This is quite a lot of manual work, and if you later make changes to the coding, you have to start o… --- ## [Remote Trigger / Virtual Button Mirroring](https://forum.velbus.eu/t/remote-trigger-virtual-button-mirroring/17649)
**Author:** [@ES9830](https://forum.velbus.eu/u/ES9830)\ **Replies:** 3\ **Last updated:** [January 1, 2025, 10:40am UTC](https://forum.velbus.eu/t/remote-trigger-virtual-button-mirroring/17649 "2025-01-01T10:40:34Z")
In every home, there are switches that serve the same function. For example, a living room in a house might have three doors: one from the entrance, one to the kitchen, and one to the utility room. At each location, you… --- ## [VMB8DC-20 and OpenHab](https://forum.velbus.eu/t/vmb8dc-20-and-openhab/17499)
**Author:** [@fastbike](https://forum.velbus.eu/u/fastbike)\ **Replies:** 18\ **Last updated:** [December 18, 2024, 11:30am UTC](https://forum.velbus.eu/t/vmb8dc-20-and-openhab/17499 "2024-12-18T11:30:34Z")
I’m looking at the support for various Velbus devices in the OpenHAB wiki, but can’t see the VMB8DC-20 0-10v dimmer controller. I can see the older 4 channel controller (vmb4dc) listed but I’m looking at a new installa… --- ## [Home Assistant does not find all my modules](https://forum.velbus.eu/t/home-assistant-does-not-find-all-my-modules/17589)
**Author:** [@jeroenvdw](https://forum.velbus.eu/u/jeroenvdw)\ **Replies:** 13\ **Last updated:** [November 29, 2024, 9:51am UTC](https://forum.velbus.eu/t/home-assistant-does-not-find-all-my-modules/17589 "2024-11-29T09:51:08Z")
Hi all, I’m busy setting up my new Velbus installation, in our new home. I have no Signum, but I’m using a Raspberry Pi, running Home Assistant. I used the Velbusd/Velbus TCP plugin (GitHub - cereal2nd/hassio-velbusd: … --- ## [Fire rated bus cable?](https://forum.velbus.eu/t/fire-rated-bus-cable/17504)
**Author:** [@MDAR](https://forum.velbus.eu/u/MDAR)\ **Replies:** 10\ **Last updated:** [November 17, 2024, 10:39am UTC](https://forum.velbus.eu/t/fire-rated-bus-cable/17504 "2024-11-17T10:39:07Z")
Hello everyone I’m looking for opinions or thoughts. Last night I saw a post on LinkedIn about a National Trust property LINK (UK Old Buildings etc), where the specification clearly demanded fire rated cabling. Thi… --- ## [Velbus TCP connection with openHABIAN](https://forum.velbus.eu/t/velbus-tcp-connection-with-openhabian/17544)
**Author:** [@MDAR](https://forum.velbus.eu/u/MDAR)\ **Replies:** 3\ **Last updated:** [October 7, 2024, 8:52am UTC](https://forum.velbus.eu/t/velbus-tcp-connection-with-openhabian/17544 "2024-10-07T08:52:36Z")
@jvelbus Following on from your posts in these threads, regarding the connection between an openHABIAN OS install, Velbus Network bridge and the official Velbus SNAP TCP gateway package For the record, I don’t use or… --- ## [Temperature Sensor Encoding](https://forum.velbus.eu/t/temperature-sensor-encoding/17461)
**Author:** [@fastbike](https://forum.velbus.eu/u/fastbike)\ **Replies:** 8\ **Last updated:** [August 16, 2024, 3:06pm UTC](https://forum.velbus.eu/t/temperature-sensor-encoding/17461 "2024-08-16T15:06:44Z")
I’m trying to integrate some custom AC control software with Velbus. I see that the current temperature is sent onto the bus for many nodes with a built in sensor, such as the VMBGP4-20. Typically this will be by sendi… --- ## [Linking actions across two systems](https://forum.velbus.eu/t/linking-actions-across-two-systems/17498)
**Author:** [@fastbike](https://forum.velbus.eu/u/fastbike)\ **Replies:** 10\ **Last updated:** [August 11, 2024, 9:50am UTC](https://forum.velbus.eu/t/linking-actions-across-two-systems/17498 "2024-08-11T09:50:20Z")
I have an existing Lonworks based automation system that is set up as two separate networks because of physical distancing that can communicate using LON over IP (each network has a router etc). I’m in the planning stag… --- ## [Temperature Sensors - Min / Max](https://forum.velbus.eu/t/temperature-sensors-min-max/17462)
**Author:** [@fastbike](https://forum.velbus.eu/u/fastbike)\ **Replies:** 0\ **Last updated:** [May 15, 2024, 6:24pm UTC](https://forum.velbus.eu/t/temperature-sensors-min-max/17462 "2024-05-15T18:24:43Z")
The VMBGPx panels have in built temperature sensors that will output their readings when responding to a 0xE7 COMMAND\_SENSOR\_TEMPERATURE command There are three values encoded into the response: current temperature mi… --- ## [Velbus and the CANBus standard](https://forum.velbus.eu/t/velbus-and-the-canbus-standard/17422)
**Author:** [@fastbike](https://forum.velbus.eu/u/fastbike)\ **Replies:** 7\ **Last updated:** [April 22, 2024, 6:16pm UTC](https://forum.velbus.eu/t/velbus-and-the-canbus-standard/17422 "2024-04-22T18:16:31Z")
How closely does Velbus follow the CANBus standard (ISO 11898-1) ? The reason I ask is that I have some legacy control modules that communicate over CANBus and I’m looking at reprogramming them to work on a Velbus netwo… [Next page](https://forum.velbus.eu/c/development/95.md?page=1)