https://wiki.domoticz.com/index.php?action=history&feed=atom&title=VBusDecoder 2026-09-18T22:40:52Z Revision history for this page on the wiki MediaWiki 1.46.0 https://wiki.domoticz.com/index.php?title=VBusDecoder&diff=14859&oldid=prev 2020-12-30T15:59:41Z

<p></p> <p><b>New page</b></p><div><br /> ==Resol VBus support==<br /> <br /> ===Method one: VBusDecoder sketch via Arduino and sending data via HTTP GET requests to Domoticz===<br /> <br /> There are many solar, system and heating controllers sold by the German brand Resol®.<br /> <br /> Popular models are derivatives of the DeltaSol® and DeltaTherm® range.<br /> Some controllers are also built for and sold by other brands.<br /> <br /> They all have a kind of a serial port with a protocol called VBus®.<br /> <br /> The controller usually sends out multiple types of datagrams, of which one in particular is very useful.<br /> <br /> It contains a list with all the current values of all sensors, pumps and switches.<br /> It might also count the total heat production.<br /> <br /> Now there is a way to acquire and convert all the data the controller outputs via this port and send the values to Domoticz.<br /> <br /> You need some additional hardware to get this to work.<br /> <br /> -Arduino microcontroller&lt;br&gt;<br /> -Wiznet 5100 Ethernet shield&lt;br&gt;<br /> -VBus to UART converter&lt;br&gt;<br /> <br /> The first two are of the shelf boards. The VBus to UART converter is a circuit you need to build by yourself.<br /> One of the possible working schematics is the following: [https://piamble.wordpress.com/tag/vbus/ click]<br /> <br /> After building the hardware you possibly need to add your own controller to the list.<br /> <br /> All the code and further instructions can be found on [https://github.com/bbqkees/vbus-arduino-domoticz GitHub].<br /> <br /> Forum topic: [http://www.domoticz.com/forum/viewtopic.php?f=31&amp;t=8370 click]<br /> <br /> ===Method 2: VBus to Pi and decoding via Python script===<br /> <br /> If the VBus to UART converter is coupled to a RS232-USB converter, the data can be read by the Pi.<br /> With a Python/LUA script and the necessary conversions the data can be sent to Domoticz directly.<br /> This has not been done yet.<br /> <br /> ===Method 3: VBus to Resol DL2 Datalogger and readout via LUA===<br /> See [https://www.domoticz.com/forum/viewtopic.php?f=34&amp;t=11818&amp;p=84886#p84886 this topic]<br /> You can add a Resol DL2 Datalogger and read out the logger via local IP with a LUA script.<br /> <br /> [[Category:Domoticz]]<br /> [[Category:Setup]]<br /> [[Category:Hardware]]<br /> [[Category:Utility]]<br /> [[Category:Power]]<br /> [[Category:Heating]]<br /> [[Category:Scripting‏‎]]<br /> [[Category:Lua]]<br /> <br /> [[Category:Linux]]<br /> [[Category:Raspberry Pi]]</div>

Walter vl