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Living Room Smoke Detector

Simple smoke/fire detector for living room.

Rating: 4.5 (28 reviews)
Downloads: 43,558 downloads
Version: 1.0.0

Overview

Simple smoke/fire detector for living room.

✨Key Features

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

Complete Documentation

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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:

bash

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:

bash

*/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

bash

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

View Status

bash

# Latest reading
cat ~/.openclaw/workspace/skills/living-room-smoke-detector/data/detector_state.json

# Log
tail -f /tmp/smoke_detector.log

How It Works

Cron triggers every 5 minutes
Fetches data directly from Dirigera hub
Checks thresholds:
PM2.5 > 250 µg/m³ (smoke particles)
CO2 > 2000 ppm (combustion byproduct)
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
If normal: Updates state and exits

State File

data/detector_state.json:

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.

Installation

Terminal bash


openclaw install living-room-smoke-detector

Copied!

💻Code Examples

~/.openclaw/workspace/skills/living-room-smoke-detector/data/alert.mp3

-openclawworkspaceskillsliving-room-smoke-detectordataalertmp3.txt

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

5-----opthomebrewbinpython3-usersmacminiopenclawworkspaceskillsliving-room-smoke-detectorscriptssmokedetectorpy--tmpsmokedetectorlog-21.txt

## Usage

### Manual Check

tail -f /tmp/smoke_detector.log

tail--f-tmpsmokedetectorlog.txt

## 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`:

example.sh

# Latest reading
cat ~/.openclaw/workspace/skills/living-room-smoke-detector/data/detector_state.json

# Log
tail -f /tmp/smoke_detector.log

example.json

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