DIY Smart Smoke Detector - Máy dò khói thông minh

Introduction

You know what they say about small fires? It’s always better to put them out!

How many times have you fallen into the trap of thinking that the smell of smoke means there’s a fire? Well, no more getting scared! Learn how to detect smoke and put out fires easily and effectively with the help of this DIY Smart Smoke Detector.

Components Required

IMAGE	COMPONENT	QUANTITY	AVAILABLE IN KIT
	evive	1	evive
	MQ4 Gas Sensor	1	None
	Blix Gear Box	1	None
	12V 3W Water Pump	1	None
	Male to Female Jumper Cable 20cm	Few	evive Starter Kit Robotic Arm Kit IoT Kit Home Automation Kit

Building Guide

Step 1: Making

The project shows the application of the smoke detector. Thus, to picture it in a better way let’s make a room where we can place our system.

Let’s start with the assembly of the room.

• For that, we are going to use the Blix pieces.
• The first thing that we are going to make is the back wall. For that, we will be taking we be taking some bigger pieces.
• We will be using connectors to connect them.
  Thus, our back wall is ready.

To make the wall stand upright we need a small base. Let’s add another piece at the base of the wall.

On this wall, we will be installing our system.

Now, even if our Smoke Detector has detected the smoke (fire), but our task doesn’t end here. We need to blow the FIRE OFF.

Thus, next is the assembly of the water shower or sprayer.

• Fix a small shower at the top of the wall. We have 3D printed the shower, whose .STL can be downloaded from the code section at the end.
• We need a holder where we can fix our shower. Thus, we will make one.
• We will add our shower to this holder.
• To this shower, we have connected the pipe.
• The other end of the pipe is connected to the pump, which is inserted into the water tank.

It’s time to include the heart of the system i.e. our Smoke Detector.

Among one of the spaces in the back wall, we will be inserting our smoke detector.

To this smoke detector, we will be connecting the jumper cables whose connection is given in the circuitry section.

Step 2: Brief about Smoke Detector

The Smoke Detector is a smoke sensing device or a fire indicator. The Smoke Sensor are basically of two types: the photoelectric detector and the ionization detector.

The one we are using is MQ4.

It is a smoke and a gas detector. The MQ series sensors are used to detect a variety of gases. They sense CH4, natural gas, alcohol, smoke, etc. They can be calibrated and thus we have calibrated it such that it will detect smoke.

Step 3: Logic

We have lit a small candle below the sensor as to check the working. As soon as the smoke arises from it, the sensor will sense this. Thus, the sensor will send the signal to evive. The evive signals the pump. Thus, the pump will push the water through the pipe to the shower. Resulting in the shower of water all over the fire.

Step 4: Circuitry

We connect the Smoke Sensor as:

• GND to GND of evive
• VCC to +5V of evive
• ANALOG OUT to A0 of evive

Water Pump is connected to M1 Motor Channel.

Step 5: Code

The following Arduino Code should be uploaded to evive.

Step 6: Conclusion

There! Now you can easily put out fires without being anxious. Comment below to let us know how this DIY project worked out for you. Don’t forget to subscribe to our Newsletter for regular updates!

Circuit Diagram

DESCRIPTION	CIRCUIT DIAGRAM
We connect the Smoke Sensor as: GND to GND of evive VCC to +5V of evive ANALOG OUT to A0 of evive Water Pump is connected to M1 Motor Channel.

Code

DESCRIPTION	DOWNLOAD CODE
Arduino Code for Smoke Detector	Download
evive Library	Download
.STL of sprayer	Download