DIY Gas Leak Detector: Affordable and Effective Solution

General
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Hey everyone, I wanted to share a project I recently completed that I’m really proud of. I’ve been looking for a reliable gas leak detector that integrates with my Homey system, but unfortunately, nothing seemed to fit my needs or budget. So, I decided to take matters into my own hands and create my own solution!

The Challenge

I have smart smoke and CO detectors at home, but finding a gas detector that works seamlessly with Homey proved to be quite the challenge. After some research, I decided to build my own using two key components: a gas leak detector from AliExpress and a Neo Coolcam door sensor.

The Solution

Here’s what I did:

  1. Gas Detector: I purchased the KERUI GD13 LPG GAS Detector from AliExpress. It’s wireless and has a 433MHz transmitter, which is essential for sending signals.
  2. Neo Coolcam Door Sensor: This sensor is perfect because it can learn and forward signals from other devices. It connects to Homey, allowing me to integrate the gas detector into my smart home ecosystem.

How It Works

  1. The gas detector continuously monitors for natural gas leaks.
  2. If it detects gas, it sounds an alarm and sends a signal via its 433MHz transmitter.
  3. The Neo Coolcam sensor picks up this signal and forwards it to Homey.
  4. Homey triggers a predefined action, such as sending me an alert and closing the gas valve.

Why This Works

  • Affordable: The total cost was around $30, making it a budget-friendly option.
  • Reliable: Unlike 433MHz signals alone, using the Neo Coolcam sensor ensures the signal is reliably transmitted to Homey.
  • Customizable: I can set up different actions based on my needs, whether it’s sending an alert, turning on lights, or shutting off the gas valve.

Results

I’ve been using this setup for a few weeks now, and it’s been rock solid. It detected a minor gas leak during a test, which I was able to address before it became a serious issue. The integration with Homey has also been seamless, and I feel much more secure knowing this system is in place.

Tips for Others

If you’re considering a similar project:

  • Make sure the gas detector you choose has a 433MHz transmitter.
  • Test the signal range between the gas detector and the Neo Coolcam sensor to ensure reliable communication.
  • Use Homey’s flow editor to set up your desired actions for when a gas leak is detected.

I’d love to hear if anyone else has tried something similar or has suggestions for improvements! Let’s continue to innovate and make our homes safer and smarter together. :blush: