@mbj
Yes, I know it.
My idea is to switch to arduino pro mini, remove power led and test duration, before remove the regulator.
Nano is used only to develop sketch and test connection.

@mbj
I'm using arduino nano.
I will try to test the configuration and also use other arduino type.
May be a possible configuration or hardware error, I need to verify circuit.

Thanks!

Hi,

Thanks for your answer @mbj !
I implement sending of battery level using custom message.
It is a good solution for me.

In this moment I have system connected to usb via programmer (not to power battery, it is my next step).
I see that arduino read a variable battery level on analogic input...from max voltage level 100% to 85% level.
It's normal behavior?

I think that using costant power supply the level must be always at 100%.
I suppose the problem is connected or to arduino analogic input or to usb power supply (even if using a tester on circuit voltage seem to be costant).
Have you ever seen something similar?

Thanks in advance.

Hi,

I know my problem is probably present in this forum, I try to find it but with no results.

I'm using Openhab 1.8.1 on Raspberry Pi 2, mqtt mysensor gateway and I have a node with arduino nano (temperature, humidity, motion and light sensor). MySensor version is 1.5.

I want to integrate it with power battery and I want to monitor the battery level in Openhab (I get the project directly from mysensor site) .
I see that mysensor has sendBatteryLevel, but I don't succeed to show value in my sitemap.
Battery level is internal message like sketch name but I succeed to show sketch name in openhab using the follow string request:

mqtt="<[mysensor:MyMQTT/20/255/V_SKETCH_NAME:state:default]"

How can see battery level sent using sendBatteryLevel? Is possible without using custom message?

Thanks in advance.