Connecting eRVin to your RV

This post is for those of you that have received a plug and play eRVin system. If you are building your own eRVin system come back here once you have assembled the hardware and installed an Image file. This tutorial assumes you have an existing wifi network aboard your RV, preferably with full time internet access.

Step 1 – connect your eRVin system to the RV-C network on your RV. The easiest and most accessible place to do this is on the front of a Firefly panel. You may have more than one Firefly panel, choose one that is in a well protected and easily accessible area. If you have just one Firefly panel it is usually located in the bathroom. Simply plug the black 4 pin plug from eRVin into the Net Port on the Firefly panel. The connector is keyed with a locking tab so there is only one way to plug it in. Click here for a video of the procedure.
There are other hidden places to plug in this system that vary by RV brand, model and floorplan which are discussed in another post.
Step 2 – After plugging in, the red LED on eRVin will light up solid and the green LED will flicker. Wait about 3-5 minutes for the system to boot up. Your wifi info has already been pre-loaded and eRVin via the wpa_supplicant.conf file and will connect to your network automatically. If you built your own system, or your wifi info was not pre-loaded, or does not work for some reason, please see this post for how to change it.
Step 3 – Now you need to find your eRVin’s IP address on your local wifi network. There are many ways to do this, but if you don’t know how I recommend using the Fing App. Download the app to a device on the same wifi network as eRVin and run it, then do a scan of your network. The device you are looking for will sometimes show up as “Phillips hue” (because of the Amazon Alexa interface) and sometimes as a “Raspberry Pi”. It will look something like the highlighted item in the Fing screen capture below. Make note of the IP address. For example my eRVin’s IP address shown in the screen capture is, yours will be different.
Step 4 – Now you can connect to eRVin and start controlling your RV!
You can connect to eRVin from any device that has a web browser – any laptop, desktop, tablet or smartphone. It can be a Windows, MacOS, Android or iOS device, or even something else as long as it has a web browser compliant with modern standards. You can even connect to eRVin from multiple devices at the same time! My preferred device is my smartphone (Samsung Android) using the Chrome browser, so the screenshots that follow will reflect that, your screens may look different.

To connect to eRVin, make sure your device is connected to the same wifi network as eRVin. Then, in your device browser simply enter the IP address for your eRVin (as discovered in the previous step), appending the additional characters :1880/ui as shown below, obviously replacing my IP address with yours, then hit enter:


Step 5 – You should get a screen that looks something like the image below. Again, this is the screen on my phone, the screen will look different for you depending on the screen size of your device.



Now, ideally you want to turn this web page into a quickly accessible “app” by making a shortcut of it. This will make it super easy to access eRVin by creating a dedicated icon that will take you directly to eRVin with just one tap. From Android this is very easy to do and I believe the process is similar for IOS.

For Android Chrome, tap the 3 dots in the upper right corner, this will bring up a list of options, as shown below look for Add to Home Screen or something similar and select it.



This will create an icon shortcut on the Home screen or desktop that will take you directly to eRVin, there is no need to open the browser and type the URL or select a bookmark.



That’s it! Do the same process to create shortcuts for your other devices as desired and enjoy!

Now that your eRVin is up and running, please watch the short video below which discusses the proper power shutdown procedure.


UPDATE 2021-02-17: eRVin OS v0.5 has been released! This version provides a mechanism for downloading and installing “configuration files” for specific RV Year/Brand/Model/Floorplan direct from the eRVin app.

Next you will want to review this post to install a compatible configuration file.


11 Comments to Connecting eRVin to your RV

  1. Randy Lust says:


    This new version looks great! Well done.

    Trying to make the changes for my new Entegra 2022 Aspire floorpan W. Today I found a compartment in the PS 4th bay behind the power breakers Inside is an open CAN port and just outside is an ethernet port on the Wifi router. This make installing the MyERVIN pi a breeze.

    Where is the best place to modify the flows for the layout for my coach?


  2. Pete Gass says:

    I have used my Macbook Pro to download the eRVin 0.5 image as well as the text file for the SSID and the password. Flashed onto SanDisk micro SD. Was able to look at file directory and open the text files on the micro SD.

    Unable to get eRVin to connect to my Entegra. Cannot see it on myfi via Fing, also checked directly on my router. Checked the micro SD on the Macbook and the wpa_supplicant.conf is still present on the SD. From what I read here, this file should have been deleted in the boot up process.

    Any guidance would be appreciated.

    Thanks for all your work here, very impressive.

    • Rob says:

      There is a common problem with the wpa.supplicant.conf file where the CR/LF format is not Linux compatible. I don’t have a mac so I’m not sure how it handles that. Being that it is Linux based you would think it would be ok, but I don’t really know. If you don’t mind sending me your wifi SSID and password I can try and configure a wpa.supplicant.conf file for you. This has worked in many other cases.

      Aside from that, if you can’t see the Pi on your local wifi either the image isn’t loading or there is something amiss with the Pi. If you happen to have a USB or wireless keyboard and mouse you can plug those into the Pi, and connect it to a TV via an HDMI cable so you can see what’s going on, then join your local wifi using the Pi Desktop (similar to windows). The wifi icon is in the upper right hand corner of the screen. This will also work if it is a corrupted wpa.supplicant.conf, once the wifi is correctly configured you should be good to go.

      • Pete Gass says:

        Thanks Rob. I was able to connect the Pi via the HDMI and got to the desktop and connected the wifi. Then restarted connected to the coach. Installed configuration file 0.51 which is the 2017 Anthem 44B. Most stuff is working. Thanks.

  3. Bill Ramsey says:

    Thank you for the amazing work you have done on this project. I have installed eRVin 0.5 in my 2018 Entegra Aspire (same config as 2017 Aspire) and almost everything, including dataplicity, is working great.

    One problem is that I can’t get Alexa to find eRVin. I get a message in the Alexa app: “Alexa is looking for devices to connect…” and then “No new devices found”.

    I do not have an Echo device.
    I have other devices on my home network that work fine with Alexa.
    I noticed that there are two IP addresseses for eRVin: one called coachproxyos and the other is Unnamed device. Both work from my computer.

    I searched every article on your site and didn’t come up with anything to help. Any thoughts?

    • Rob says:

      Hi, yes Alexa is broken in this version due to some data structure changes Amazon made this past Spring. The eRVin .5 version uses the same HABridge software that coachproxy did and that’s what broke. I haven’t followed up lately with HABridge but as of this past spring there was no reliable fix. There were tweaks that worked for some and not for others. I have started implementing an entirely different Alexa interface (a Node-Red contrib) by a different developer that is more reliable (and more capable) but will take more effort on the end users part to configure (you will need to enter your Amazon account info for each device). I have it running on my coach and it has been very solid. I have had to put eRVin aside until November or so, but at that point I’ll release a new version and start updating the config files.

      Yes the Raspberry Pi claims two ip addresses, usually they are sequential. Not really sure why. I think either will work for Dataplicity or other connections.

      • Bill Ramsey says:

        I found a workaround. I have a Harmony hub that recognizes HABridge on eRVin and is easy to set up. I can control everything through the Harmony from Alexa or Google assistant. Thanks for all your work on this project.

        • Randy Lust says:

          Bill great idea with the Harmony Hub. If you are into home automation check out Homeassistant. They have a Phillips Hue integration that found all the lights.

          I have a new 2022 Aspire W that I need to configure the flows for.

          Any tips on that?

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