argonone-lite

argonone-lite is a small, host-focused Python daemon for Argon ONE V1 fan control and front power-button monitoring on Raspberry Pi.

It was built as a lightweight alternative to the broader official installer flow. The aim is to keep the install readable, reversible, and easy to audit: one daemon, one config file, one systemd unit, and journal logging.

• Independent implementation rather than wrapping the vendor installer.
• Minimal attack surface—one daemon, one config, one service.
• No dependency on Argon's download server after installation.
• Home Assistant native integration via MQTT Discovery.
• Systemd-native with journald logging.
• Documented and versioned from day one.

Tested hardware and OS:

• Raspberry Pi 4 8GB
• Argon ONE V1 case
• Debian GNU/Linux 13 (Trixie), 64-bit / aarch64

It may also work on similar Argon ONE Raspberry Pi 4 cases, but this project is only tested on the hardware and OS listed above.

Features

• Temperature-based fan control over the Argon ONE I2C controller at 0x1a
• Front power-button monitoring with shutdown-focused handling
• Optional MQTT status publishing
• Optional Home Assistant MQTT Discovery
• Small, readable, systemd-friendly deployment

Why not the official installer?

This project exists for users who want a narrower install surface than the vendor script. It avoids a broad setup flow that can bundle unrelated downloads, wider filesystem changes, and package upgrade behavior that may be undesirable on an existing Docker host or appliance-style Pi.

Files

• argonone-lite
• argonone-lite.conf.example
• argonone-lite.service
• INSTALL.md
• UNINSTALL.md
• CHANGELOG.md
• LICENSE

MQTT status

Default status topic:

• moho/argonone/status

Default discovery topic:

• homeassistant/device/moho_argonone/config

Status payload fields include:

• temperature_c
• fan_percent
• fan_state
• fan_target_temperature_c
• uptime_seconds
• service_version
• hostname
• timestamp
• button_monitor
• mqtt_discovery_enabled
• mqtt_discovery_prefix

Safety note

This is a community-maintained independent lightweight daemon. It is not affiliated with or endorsed by Argon Forty.

Power-button behavior should only be tested when it is safe for the Raspberry Pi to shut down cleanly.