Hi, I'm Việt — an independent open-source developer from Vietnam building tools for smart homes, renewable energy, and IoT.

What I build:

☀️ Solar & Energy — Lumentree HA and SmartSolar MPPT HA bring real-time solar inverter and MPPT charger monitoring into Home Assistant. Used by solar system owners across Vietnam and globally (MIT license, HACS compatible).

🌐 Networking — MikroTik HA integrates MikroTik RouterOS devices with Home Assistant. Apache 2.0, 26 translations, 3 releases, supports PPPoE/VLAN/bandwidth monitoring.

🔌 ESP32 IoT — 26+ ESPHome projects: BLDC smart fans, JK-BMS battery monitors, mmWave presence sensors, auto power switches, Matter-compatible devices (ESP32-C6). All configs open-source and production-tested on real hardware.

Why sponsor:

I spend 15-20 hours/week maintaining these projects — testing against latest HA releases, fixing bugs, adding features. Your sponsorship directly funds hardware for testing (sensors, boards, inverters) and keeps integrations compatible. Vietnam's cost of living means your contribution goes 3-5x further than in the US or EU.

What sponsors get:

Early access to new integrations before public HACS release
Priority bug fixes and feature requests
Your name in project READMEs
Behind-the-scenes dev logs and ESPHome tutorials
All my code is MIT or Apache 2.0 — and will stay that way. Sponsorships keep these tools free, maintained, and growing. Thank you for your support! 🙏