1KOMMA5° Heartbeat — unofficial Home Assistant integration

Share your Projects! Custom Integrations
1

Hi everyone,

:warning: this integration was built entirely with AI assistance (vibe-coded).

I built an unofficial HA integration for 1KOMMA5° Heartbeat — a German home energy platform combining PV, battery, heat pump, EV charger and dynamic electricity pricing.

I was already aware of the existing hacs_1komma5grad integration, but was missing a few things - so I started this as a vibe-coding experiment, and it turned into a surprisingly complete integration.

What you get:

  • Live power sensors for PV, battery, grid, consumption, EV charger, heat pump (30 s)
  • Energy sensors (kWh) for the Energy Dashboard
  • Electricity cost & feed-in revenue sensors (dynamic pricing)
  • 30-hour price forecast + cheapest-hour attribute
  • Binary sensor: ON when price is below today’s average
  • EV charger controls (charging mode, target SoC, departure time)
  • EMS auto mode switch

GitHub:

Let me hear what you think.

Thanks & Best Regards,
Markus

2

Please make it more clear at the top of the post that it was vibe-coded. Thank you.

1 Like