@user2684 @skywatch thank you for your feedback! :)

@user2684 hi,
Thank you for sharing your project here!!! I've been looking quite a long time until I found it :)

I have a question regarding safety problem. In case the battery drops after opening below the voltage needed to close it again the water would not stop. Do you have an idea how to solve this problem?
Or do you just replace the batteries "early" enough?