Awesome Open

Project record

OpenDTU

OpenDTUHome AutomationESP32 software for monitoring solar microinverters.GPL-2.0
Field notes / 203OpenDTU
I / Function

ESP32 software for monitoring solar microinverters.

OpenDTU is firmware for an ESP32-based gateway that communicates with supported Hoymiles solar inverters. Its web interface displays live measurements, device information and event logs, and allows users to set inverter power limits or switch an inverter on and off. MQTT, Home Assistant discovery and a Prometheus endpoint provide integration paths for monitoring systems.

OpenDTU README / OpenDTU documentation: introduction · Reviewed 2026-11-03

An amber leaf-shaped collector feeds measurement chambers beneath its canopy.
Awesome Open* · Field recordOpenDTUOP-915B7C6F · Folio 203Domain: Home Automation
  1. 01 / Feature noteInverter monitoring

    View live data, internal event logs and inverter firmware and hardware information.

    Feature source ↗
  2. 02 / Feature noteMonitoring integrations

    Publish through MQTT, use Home Assistant MQTT discovery or query the Prometheus metrics endpoint.

    Feature source ↗
II / Repository record

GitHub stars

2,206

Detected license

GPL-2.0

Repository created

2022-06-24

Repository push

2026-11-02

III / Observations & evidence

GitHub stars

Unknown

i
Window mismatch; awaiting refresh

Cached history uses a different month window; chart withheld until aligned.

Latest attempt: ok · Checked 2026-10-16T01:56:34.524437+00:00 · Last successful fetch 2026-10-16T01:56:34.524437+00:00 · Provider source

Hacker News stories

Unknown

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Not recorded

OpenSSF Scorecard

Unknown

i
Unavailable

No result returned.

Checked 2026-10-27T03:01:39Z · Latest attempt: not found · Provider source

IV / Release record

GitHub release

v26.9.28

Published 2026-09-28

i
Available

Checked 2026-11-04T04:26:56Z · Last successful fetch 2026-11-04T04:26:56Z · Value fetched 2026-11-04T04:26:56Z · Provider source

V / Where it runs

Unknown

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Not reviewed