tbnobody/OpenDTU
Some data may be outdated — see provenance labels.
Software for ESP32 to talk to Hoymiles/TSUN/Solenso Inverters observed · 2026-09-30
Health v2 · maintenance only
93/100
- Activity 97
- Release rhythm 85
- Longevity 100
How is this computed?
round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10) — computed 2026-10-21. Adoption (stars, forks) is never an input.
- gap_med: 43.0
- age_days: 1579
- days_rel: 22
- days_push: 22
- n_releases_24m: 11
Adoption not part of the score
2192 stars · 632 forks observed · 2026-09-30
What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-30, confidence not recorded
OpenDTU is ESP32 firmware that replaces the proprietary Hoymiles DTU cloud gateway for solar micro-inverters, communicating directly over the Hoymiles/TSUN/Solenso radio protocol. It exposes a web interface plus MQTT and Prometheus endpoints for monitoring and controlling the inverter locally.
Use cases
- monitor my Hoymiles solar inverter without the cloud
- replace the Hoymiles DTU telemetry gateway with open source firmware
- integrate my balcony solar setup with Home Assistant via MQTT
- read live solar production data locally from TSUN inverter
- limit the power output of my micro-inverter
- export solar inverter metrics to Prometheus
When to choose
- you have a Hoymiles, TSUN, or Solenso micro-inverter and want local, cloud-free monitoring and control
- you want MQTT or Prometheus integration for home automation dashboards
- you want to set inverter power limits from your own network
When to avoid
- your inverter brand is not Hoymiles/TSUN/Solenso compatible
- you need a ready-made commercial product rather than firmware you flash yourself
- you rely on the vendor cloud portal features
Facets
application · maturity active
iot monitoring reverse-engineering http-server iot energy self-hosted hardware iot embedded self-hosted solar hoymiles mqtt dtu balkonkraftwerk inverter platformio prometheus
1 source
- readme: https://github.com/tbnobody/OpenDTU · fetched 2026-09-30 · 06ef886b082c
Member repositories
| Repository | Role | Health v2 |
|---|---|---|
| tbnobody/OpenDTU | main | 93 |
For agents
markdown · JSON · MCP: product_card(name="tbnobody/OpenDTU")
Data as of 2026-10-19T08:05:51.212177+00:00 · Report a problem