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Good morning I’m trying to test the new  Rut x11 Wi-Fi router. It seems to be a perfect evolution of Rut 955 but we encountered a problem. Our customers are using the standard analog input to monitor voltage battery of vehicle (car, rv or boat). This is a fantastic feature because we can inform via sms or mqtt when 12v battery drains too much and go below 11 volt.

On rut x11 I can see no more analog input but only digital input. How can we monitor 12v voltage with this digital input? It’s possible to convert digital to analog input via software? Thanks
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It's sad that they did not include a Voltmeter in the hardware it self like most GPS systems have. I expected that from a mobile router.
Would be great to be able to read the value from bash and it's very cheap to include.

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Without additional hardware  you can't.
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For example? What kind of additional hardware may solve the problem?
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For example, electronic scheme which work as transistor with 11v threshold.