USB Cable Squeeze to Fix Low Voltage Condition

Have you done the USB Cable Squeeze Yet?

In August and September of 2021, we found that a significant number of customer problems with WiFi and Bluetooth reliability were due to a low voltage condition inside the RV Whisper Monitor Station (RVM1 and RVM2 systems).

There is a SIMPLE FIX recommended for all customers:  Simply squeeze the larger connector that is on one end of the USB power cable.  That’s right, just unplug the USB Cable from whatever you are using for USB power, and squeeze the large connector (the USB A Connector).  You can squeeze the USB A Connector between your thumb and a table top, or you might need to use both thumbs (one on top of the other) depending on your finger strength.

The squeeze should be enough to make inserting the USB cable into the USB Power Port much more difficult.  Here is an image that shows both an “unsqueezed” and a “squeezed” USB cable connector.

The “USB Squeeze” has fixed the following problems for many customers:

  • WiFi reliability
  • Bluetooth reliability
  • Slow performance
  • System suddenly not connecting to WiFi
  • System would rarely connect to WiFi

And, as always, if you are having problems, you can just email to get help.

WiFi Connection Troubleshooting

WiFi Setup and Troubleshooting

If your RV Whisper Monitor Station (RVM2-xxxx) or (RVM1-xxxx) is having trouble connecting to your WiFi router in your RV, here are some troubleshooting steps. Do not hesitate to contact or call 410-286-3060 if you need help getting your WiFi connection setup properly.  If  you are comfortable connecting to different WiFi networks, the steps below may help you solve the problem on your own.

  1. Are you trying to use the “Personal Hotspot” feature on an iPhone or iPad as your RV WiFi network? If so, that can work but there is a problem with getting it to work. Read the details here:

  2. Are you trying to connect to campground WiFi or some other public hotspot? If so, there are potential problems that can prevent it from working. Read about that here:

  3. Start by looking at this How it Works diagram and read the brief description at the bottom of the How it Works page.  It will likely help you better understand how the various WiFi connections work and help you understand the troubleshooting steps below.

  4. Does the “RV Whisper Launcher” phone app connect to your RV Whisper Monitor Station “Local WiFi” during the Setup / Change Settings step?  If so:

    • What is the “Currently Connected Network” displayed on the Network Settings page?  If it says “Not Connected”, then select your RV WiFi network from the list, enter your RV’s WiFi password, click SAVE AND REBOOT.

    • When your RVM is successfully connected to a WiFi router, the Currently Connected Network will show that connection.  If it is connected to your RV WiFi network, then the WiFi setup is completed. 

  5. Are you able to do the “Manual WiFi Setup Instructions for laptops, phones, or tablets” documented on page 4 of the RV Whisper User Manual:

  6. Does the “Local WiFi” connection (between your phone and the RVM2-xxxx or RVM1-xxxx WiFi network) keep appearing and disappearing evey minute or s?  If so, then an incorrect WiFi password may have been entered for your RV WiFi network.  If that is happening, you can contact RV Whisper support or try these troubleshooting steps yourself:

    • Temporarily Turn Off your RV WiFi router.

    • Verify that the RVM2-xxxx WiFi network is visible from your phone’s WiFi settings and the RV Whisper Launcher phone app is now able to connect to and stay connected to your RVM2-xxxx WiFi network.  If this is successful then continue to the next steps:

      • Find another WiFi network to temporarily connect to.  It could be a personal hotspot on a phone but if it is an iPhone or iPad Personal Hotspot you MUST follow these instructions to get your iPhone or iPad Personal Hotspot feature to allow connections to it:

      • Do the RV Whisper setup steps to connect to your new (temporary) WiFi network.  You can use the RV Whisper Launcher phone app (on a different phone than the phone using as a Personal Hotspot), or you can follow the Manual WiFi Setup instructions described in Step 5 above.

      • After connecting to your new (temporary) WiFi network (SAVE & REBOOT step), wait 2 minutes and validate the “Gateway Login” feature now works.  If the Gateway Login feature works continue to next step.  If not, repeat step 6 or contact or call 410-286-3060.

      • Turn your RV WiFi router back on.

      • Wait a few minutes for your RV WiFi router to boot up.

      • In the RV Whisper Launcher app, reload the Settings page (gear icon) and click the NETWORK button.  You should now be able to see you RV WiFi network in the list of available networks.   Select your RV WiFi Network, carefully enter your RV WiFi password, click SAVE & REBOOT

      • You may need to wait a minute, and reload the Settings page (click gear icon) to rescan for WiFi networks.  Then click the NETWORK button to see if your RV WiFi network shows up in the list of available WiFi networks.



Why do the Mopeka Phone App and RV Whisper sometimes show different values?

People that compare the Mopeka Phone App with the RV Whisper display often wonder how the values can be different from each other.  It’s actually pretty straightforward why (to me anyway), but it takes a bit of explaining to understand why.

Each Mopeka sensor broadcasts the liquid height every few seconds from its Bluetooth radio transmitter. The liquid height is the only value that gets transmitted. The %Full calculation is up to the Mopeka Phone App and RV Whisper to do independently. RV Whisper currently calculates the %Full values for only 20lb and 30lb propane tanks which are most commonly used on travel trailers and fifth wheel trailers. These are the “Propane20-” and “Propane30-” sensor types. If you have a different size tank, you should focus on the “Liquid Height in Inches” measurement for your Propane tank.

While the Mopeka Phone App only shows you the most recent measurement that it sees over the Bluetooth radio,  The RV Whisper Monitor Station sees the same liquid height measurements from the Mopeka sensors, but RV Whisper only logs the data every 300 seconds (every 5 minutes).  So when you compare the two apps, you are almost always comparing sensor measurements from two different times – (data from sometime during the last 5 minutes in RV Whisper vs. data from just a few seconds ago in the Mopeka phone app). You should not assume the “Liquid Height in Inches” that the Mopeka sensor reports never changes except when you use propane.

The Mopeka sensor liquid height value that gets transmitted can change every few seconds as the physics of the measurements can be affected by several things such as motion, poor positioning of the tank sensor, dirty tank bottom and an off-level tank. Even slight motion of the tanks causes the liquid to move a little bit which causes ultrasonic wave reflections that change the results a bit.  Walking around in the RV usually creates enough movement to affect the tank readings, and it can take several minutes for the liquid motion to stop. Also, as the tank cools and heats, the liquid expands and contracts significantly. And of course, if the propane tank bottom is dirty, or the sensor is not pressed cleanly against the tank bottom, or the sensor is not level, or the tank is not level, the measurements can vary even more.

The Mopek phone app displays a “quality” metric.  If the “Quality” metric is low, that means the sensor is not making good contact, or the tank bottom is not clean, or the sensor is not horizontal, or the tank (and/or the RV) are not level. This usually means the tank level reported every few seconds is changing a lot or a little.

Hopefully, this provides some insight into why the Mopeka Phone app and RV Whisper data can be different by a few percent.