[{"data":1,"prerenderedAt":317},["ShallowReactive",2],{"navigation":3,"blog-page":14,"blogs":25},[4],{"title":5,"path":6,"stem":7,"children":8,"page":13},"Blog","/blog","blog",[9],{"title":10,"path":11,"stem":12},"LoraWan Webasto Car Heater Controller","/blog/webasto-lora","blog/webasto-lora",false,{"id":15,"title":16,"body":17,"description":18,"extension":19,"links":20,"meta":21,"navigation":22,"path":6,"seo":23,"stem":7,"__hash__":24},"pages/blog.yml","Artikel",{"title":16,"description":18},"Kleine Projekte oder Ideen zum Teilen.","yml",null,{},true,{"title":16,"description":18},"QcrMf1aDKK5NTsceDQI2uBm8FNPIkDmIOJV_kpi1WU4",[26],{"id":27,"title":10,"author":28,"body":32,"date":309,"description":310,"extension":311,"image":312,"meta":313,"minRead":314,"navigation":22,"path":11,"seo":315,"stem":12,"__hash__":316},"blog/blog/webasto-lora.md",{"name":29,"avatar":30},"Jakob Kaliwoda",{"src":31,"alt":29},"/img/portraits/jfk-1.png",{"type":33,"value":34,"toc":296},"minimark",[35,48,51,61,64,71,74,79,82,104,111,116,126,132,136,147,150,169,172,180,186,189,193,197,200,203,214,217,222,230,233,237,243,279,283,286,290,293],[36,37,38,39,43,44,47],"p",{},"The ",[40,41,42],"strong",{},"Webasto Controller"," is an innovative side project designed to connect an Arduino-based controller with a Webasto vehicle heater. The project demonstrates how modern IoT technology can be used to control vehicle heating systems remotely. In this example, a ",[40,45,46],{},"LoRaWAN controller"," is used to enable reliable long-range remote start functionality.",[36,49,50],{},"Want to see it in action?\nWatch the full demonstration here:",[36,52,53],{},[54,55,60],"a",{":target":56,"href":57,"rel":58},"_blank","https://www.youtube.com/watch?v=Gh8eYCxihWk",[59],"nofollow","YouTube Demonstration Video",[36,62,63],{},"The project is open-source, and the source code is available on GitLab for anyone interested in replicating or improving upon the design.",[36,65,66],{},[54,67,70],{":target":56,"href":68,"rel":69},"https://gitlab.com/jfk344/wbusloraremote",[59],"Source Code",[72,73],"buy-me-a-coffee-button",{},[75,76,78],"h1",{"id":77},"wbusloraremote","WBusLoraRemote",[36,80,81],{},"A DIY alternative for the \"Webasto Telestart\", using two ESP32 equipped with Lora.",[36,83,84,85,88,89,92,93,96,97,92,100,103],{},"With a remote you can check the ",[40,86,87],{},"status",", turn the ",[40,90,91],{},"parking heater"," and ",[40,94,95],{},"ventilation"," ",[40,98,99],{},"on",[40,101,102],{},"off"," with a timer.",[36,105,106,107,110],{},"In the car is a reciver which uses ",[40,108,109],{},"W-Bus"," to transfere the commands to the heater Heater-Controll-Unit. The reciver is a ESP32 with an hardware interface for the W-Bus connection.",[112,113,115],"h2",{"id":114},"tested-webasto-heaters","Tested Webasto Heaters:",[117,118,119,123],"ul",{},[120,121,122],"li",{},"Webasto TT Evo 4 / 5 / 5+",[120,124,125],{},"Webasto TT V",[36,127,128],{},[129,130,131],"em",{},"I do not guarantee that this will work for your heater. Trying to recreate this project is at your own risk!",[75,133,135],{"id":134},"remote","Remote:",[36,137,138,139,142,143,146],{},"The remote case is made to fit a Heltec ESP32 Lora V2 on a prototyping PCB with two ",[40,140,141],{},"buttons"," and one ",[40,144,145],{},"Power Switch",".",[36,148,149],{},"With the oled a command can be selected. Possible commands are:",[117,151,152,155,161,166],{},[120,153,154],{},"Get basic heater on/off status",[120,156,157,158],{},"Parking Heating on with ",[40,159,160],{},"Time Select",[120,162,163,164],{},"Ventilation on with ",[40,165,160],{},[120,167,168],{},"Turn both off",[36,170,171],{},"Planned commands:",[117,173,174,177],{},[120,175,176],{},"battery level of the remote",[120,178,179],{},"show timers and activate or deactivate them",[181,182],"custom-image",{":width":183,"alt":184,"src":185},"350","Hardware Image 1","/img/articels/webasto-lora/remoteMainMenue.png",[181,187],{":width":183,"alt":184,"src":188},"/img/articels/webasto-lora/remoteTimeSelect.png",[75,190,192],{"id":191},"controller","Controller:",[112,194,196],{"id":195},"hardware-interface","Hardware Interface:",[36,198,199],{},"This circuit converts the TTL Output (0V - 5V) from the LevelConverter or ESP to a K-Line output signal (0V - 12V) and Kline to TTL RX (0 - 5V).",[36,201,202],{},"Using an ESP32 requires an \"TTL-Level-Converter\" to push your 3.3V output up to 5V for TX and the 5V to 3.3V input for RX.\nAlternative would be voltage divider.",[36,204,205,206,209,210,213],{},"The Circuit is a ",[40,207,208],{},"replacement"," for the ",[40,211,212],{},"L9637D"," converter chip!",[181,215],{":width":183,"alt":184,"src":216},"/img/articels/webasto-lora/controllerHwTop.png",[218,219,221],"h3",{"id":220},"parts","Parts:",[117,223,224,227],{},[120,225,226],{},"Heltec ESP32 Lora V2",[120,228,229],{},"Prototype PCB",[181,231],{":width":183,"alt":184,"src":232},"/img/articels/webasto-lora/HW_Interface.png",[112,234,236],{"id":235},"connection-to-esp32","Connection to ESP32:",[36,238,239,240],{},"Using Serial 2 on the ESP32: ",[40,241,242],{},"! Serial2 doesn't work when OLED enabled !",[244,245,246,259],"table",{},[247,248,249],"thead",{},[250,251,252,256],"tr",{},[253,254,255],"th",{},"PIN ESP32",[253,257,258],{},"Connection on HW Interface",[260,261,262,271],"tbody",{},[250,263,264,268],{},[265,266,267],"td",{},"Pin 17",[265,269,270],{},"TTL TX",[250,272,273,276],{},[265,274,275],{},"Pin 16",[265,277,278],{},"TTL RX",[112,280,282],{"id":281},"installation-in-an-vw-up","Installation in an VW Up!",[36,284,285],{},"I have installed the and tested my project on an VW Up! TSI.\nUsed:\n- Webasto installation kit for the VW Up! TSI + Climatronic kit\n- Webasto TT EVO 4",[218,287,289],{"id":288},"mounting","Mounting:",[181,291],{":width":183,"alt":184,"src":292},"/img/articels/webasto-lora/controllerHwBuildin.png",[181,294],{":width":183,"alt":184,"src":295},"/img/articels/webasto-lora/espAntenna.png",{"title":297,"searchDepth":298,"depth":298,"links":299},"",2,[300,301,305,306],{"id":114,"depth":298,"text":115},{"id":195,"depth":298,"text":196,"children":302},[303],{"id":220,"depth":304,"text":221},3,{"id":235,"depth":298,"text":236},{"id":281,"depth":298,"text":282,"children":307},[308],{"id":288,"depth":304,"text":289},"2025-12-21T00:00:00.000Z","A LoraWan controller to interface with a webasto car heater to diy the expensive Webasto LTE controller.","md","/img/articels/webasto-lora.png",{},7,{"title":10,"description":310},"txaMPegMmBTM_XDDlZIVXR7OfmMZqZMh6_QDQMVuM20",1772625455769]