Hi, you can try these power supplies:
https://www.aliexpress.com/store/group/UPS-Charge-Function-switch-power-supply/1242857_501520362.html?spm=a2g0o.detail.100008.25.56f87402HSB2Og
The are for 12V, but also support an external battery.
I have two that work very well.
@legeantvert said:
On the same way, i dont understand how and where are stored the values inside the gateway if not used on each reception, are they stored somewhere to be able to answer them when serial request arrive?
You could bypass this on some kind of events obviously !
Actually my perl gateway is acting as the server Vera is for the arduino gateway. So from there I can trigger external URL, store data in a sqlite3 database... and so on !