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Helios est le genre de carte qu'on partage volontiers parce qu'elle répond à un vrai besoin : comprendre ce qui se passe au-dessus de sa maison, pas juste surveiller un compteur.

Helios : la carte Lovelace 3D et LiDAR pour Home Assistant
antoineguilbert.fr May 27, 2026

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I still believe we can turn this around.

I'm Jérôme, 44, the developer behind Helios. After years across the whole stack, backend, frontend, 3D, games, embedded, I wanted to build something that actually matters to me.

A card won't save the planet, I know. But guilt and numbers nobody reads change no one: people change when they can finally see what's happening in their own home. That's the whole point of Helios, make energy visible, tangible, even beautiful, so acting on it stops feeling like a duty and starts feeling obvious.

Helios is free and open source, built by one person in the open.

Helios is an independent community project, not created by, endorsed by, or affiliated with the Open Home Foundation or Home Assistant. Home Assistant and the Home Assistant logo are trademarks of the Open Home Foundation.

ReikanYsora - Jérôme CREMOUX - 2026