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Chris Van Dyke avatar image
Chris Van Dyke asked

How to read aux voltage from smart shunt

I have a 24 volt house system in my van with a smart shunt, Cerbo GX and Color display. I wired my 12 volt start battery to the aux input on the smart shunt. The voltage shows up via bluetooth (device list Smart Shunt) , but I can not find it on the monitor or online. Is there a way to read this voltage remotely and on my color monitor?

SmartShunt
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klafollette avatar image klafollette commented ·

Looking for any additional advice on this same situation. I see my separate starter voltage in the remote console, but it doesn't show the starter battery voltage in VRM like the screenshot below. I'm using SmartShunt and the starter battery is connected to the Smartshunt Aux port. Running Venus OS v3.10 on RPi if that makes any difference. In console under Settings > Battery Measurements > Smartshunt (Auxillary measurement), I have it listed as 'Visible'.

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pwfarnell answered ·

On the Cerbo colour monitor you need to go to the menu to see the device list, then select the battery monitor and when that opens you should see the starter battery voltage.

screenshot-20230702-172657-kindlephoto-239679025.png

screenshot-20230702-172739-kindlephoto-239721001.png

On VRM it should be displayed on the dashboard.

screenshot-20230702-172353-kindlephoto-239496113.png


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pwfarnell avatar image
pwfarnell answered ·

@klafollette I have found extra info that may help you. I said on my earlier comment that it sometimes takes an extra period of time for the starter voltage to appear. I have just looked up the VRM manual and it states that the Venus device needs to have two way communication enabled and VRM needs to have the real time feature enabled. This is why it takes a short while for the starter battery box to appear as it does not appear until the real time connection is made.

On VRM menu go to Settings → General → Realtime updates green(on) / red(off).

On Venus menu go to Settings → VRM online portal → VRM two way communication → enabled

VRM manual can be found here, see Sections 3.5.2 and 4.2.

https://www.victronenergy.com/media/pg/VRM_Portal_manual/en/index-en.html

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klafollette avatar image klafollette commented ·
I had Realtime Updates turned on, but VRM two-way comm was disabled. I enabled two-way comm and bingo!!, I now see my chassis battery voltage on the VRM dashboard. Thanks much for the solution.
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