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🦀 ClawHub

Living Room Smoke Detector

by @maverick-2

Simple smoke/fire detector for living room. Queries Dirigera air sensor every 5 minutes, detects dangerous PM2.5 over 250 or CO2 over 2000 levels, and broadc...

Versionv1.0.0

Downloads1,084

#legal

View on ClawHub →

TERMINAL

clawhub install living-room-smoke-detector

📖 About This Skill

name: living-room-smoke-detector description: Simple smoke/fire detector for living room. Queries Dirigera air sensor every 5 minutes, detects dangerous PM2.5 over 250 or CO2 over 2000 levels, and broadcasts emergency alert on Mac speaker continuously until air quality normalizes. Acts as backup to regular smoke alarms.

Living Room Smoke Detector

A simple, focused smoke and fire detection system that monitors the living room ALPSTUGA air sensor via the Dirigera hub.

What It Does

Queries Dirigera directly every 5 minutes (not from database)

Simple state only - keeps just the latest reading, no history

Detects danger: PM2.5 > 250 µg/m³ OR CO2 > 2000 ppm

Continuous alert - plays "Attention! Abnormal smoke level detected" on Mac speaker

Loops until cleared - keeps playing every 5 seconds until air quality normalizes

Backup smoke alarm - works alongside your regular smoke detector

Setup

1. Copy Alert Sound (optional)

If you already have the alert sound from the air monitor skill:

cp ~/.openclaw/workspace/skills/living-room-air-monitor/data/smoke_alert_message.mp3 \
   ~/.openclaw/workspace/skills/living-room-smoke-detector/data/alert.mp3

Otherwise it will auto-generate on first run.

2. Cron Setup

Add to crontab to check every 5 minutes:

*/5 * * * * /opt/homebrew/bin/python3 /Users/macmini/.openclaw/workspace/skills/living-room-smoke-detector/scripts/smoke_detector.py >> /tmp/smoke_detector.log 2>&1

Usage

Manual Check

python3 ~/.openclaw/workspace/skills/living-room-smoke-detector/scripts/smoke_detector.py

View Status

# Latest reading
cat ~/.openclaw/workspace/skills/living-room-smoke-detector/data/detector_state.json
Log
tail -f /tmp/smoke_detector.log

How It Works

1. Cron triggers every 5 minutes 2. Fetches data directly from Dirigera hub 3. Checks thresholds: - PM2.5 > 250 µg/m³ (smoke particles) - CO2 > 2000 ppm (combustion byproduct) 4. If danger detected: - Saves state (alert_active = true) - Enters alert loop - Plays alert sound every 5 seconds - Re-checks sensor between plays - Exits loop when air clears 5. If normal: Updates state and exits

State File

data/detector_state.json:

{
  "latest_reading": {
    "pm25": 3,
    "co2": 525,
    "time": "2026-02-25T20:30:00"
  },
  "alert_active": false,
  "last_check": "2026-02-25T20:30:00"
}

Alert Behavior

When danger is detected:

Mac speaker plays: *"Attention! Abnormal smoke level detected"*

Waits 5 seconds

Checks sensor again

Repeats until PM2.5 ≤ 250 AND CO2 ≤ 2000

Press Ctrl+C to stop manually if needed

Files

| File | Purpose | |------|---------| | scripts/smoke_detector.py | Main detection script | | data/alert.mp3 | Alert sound file | | data/detector_state.json | Latest reading and status |

Dependencies

Python 3.x

Dirigera hub access (192.168.1.100)

Auth token at ~/.openclaw/workspace/.dirigera_token

macOS afplay (built-in)

say and ffmpeg (for alert generation)

Differences from Air Monitor Skill

| Feature | Air Monitor | Smoke Detector | |---------|-------------|----------------| | Data storage | Full SQLite database | Latest reading only | | Query source | Database | Dirigera directly | | Frequency | Every 2 min | Every 5 min | | Purpose | History + charts | Immediate alerting | | Alert | Single play | Continuous loop | | Complexity | Multi-feature | Single-purpose |

Use both for complete coverage: air monitor for data logging, smoke detector for focused alerting.

💡 Examples