Elektrine lite

← Feed

@projectgus@aus.social

Post #3163636

2026-02-27 08:06 UTC

@deepfryed@fosstodon.org Not exactly. We have a fronius wattpilot EV charger, which polls the web API of the Fronius inverter to do solar charging and also to prevent tripping the main breaker if the grid draw is too high. We're about to get a different solar setup installed. So I want to make a little server that presents power data from home assistant as if it was a fronius inverter, enough to keep the wattpilot happy. Our inverter is old so it uses their simple UDP broadcast discovery system, but I thought I might have a crack at implementing mDNS instead. But all I knew was what mDNS services the wattpilot sends queries for, and that's not enough for it to show up.

Replies (1)

  • @deepfryed@fosstodon.org 2026-02-27 08:26

    @projectgus@aus.social I don't have an EV, but I have a mixed battery household. Old powerwall and new sigen, I have setup home assistant to monitor grid use and balance the battery charging appropriately in the 3hr free window so total draw doesn't exceed 58A. Can't you control watt pilot from HA, invert responsibility ? Nevertheless, interesting "middleware" to work on.

    Open ##3163637