SUPER SMOKE DETECTOR Z by https://padlet.com/songokukaiokenx8/6os04bn8zclxoigv You must be a believer,if you want be a archiver en-us 2020-11-05 04:54:09 UTC 2026-02-16 18:31:32 UTC hello@padlet.com https://padlet.net/icons/png/1f1f2-1f1fe.png How does it work songokukaiokenx8 https://padlet.com/songokukaiokenx8/6os04bn8zclxoigv/wish/892749291
The voltage that the sensor outputs changes accordingly to the smoke/gas level that exists in the atmosphere. The sensor outputs a voltage that is proportional to the concentration of smoke/gas.


In other words, the relationship between voltage and gas concentration is the following:

  • The greaterthe gas concentration,the greaterthe output voltage
  • The lowerthe gas concentration,the lowerthe output voltage



Working Mechanism

The output can be an analog signal (A0) that can be read with an analog input of the Arduino or a digital output (D0) that can be read with a digital input of the Arduino.

]]> 2020-11-05 05:01:57 UTC https://padlet.com/songokukaiokenx8/6os04bn8zclxoigv/wish/892749291 Pin wiring songokukaiokenx8 https://padlet.com/songokukaiokenx8/6os04bn8zclxoigv/wish/892767063
The MQ-2 sensor has 4 pins.


Pin-------------------------------------Wiring to Arduino Uno


A0-------------------------------------Analog pins


D0-------------------------------------Digital pins


GND-----------------------------------GND


VCC------------------------------------5V


So, before jumping into the coding part, let's check whether we've assembled all the necessary hardware components.




Hardware Components

Kindly refer to the connection schematic attached below. After you've wired all the components properly, it's time to upload the necessary code

]]> 2020-11-05 05:11:29 UTC https://padlet.com/songokukaiokenx8/6os04bn8zclxoigv/wish/892767063 coding super smoke detector z songokukaiokenx8 https://padlet.com/songokukaiokenx8/6os04bn8zclxoigv/wish/900751731 2020-11-08 03:52:28 UTC https://padlet.com/songokukaiokenx8/6os04bn8zclxoigv/wish/900751731 ITEM songokukaiokenx8 https://padlet.com/songokukaiokenx8/6os04bn8zclxoigv/wish/911240770 BREADBORD(GENERIC)                    MQ-2 SENSOR                                      WIRE MALE/FEMALE                     LED RED/LED GREEN (5MM) BUZZER RESISTOR( 221 OHM)]]> 2020-11-11 02:09:30 UTC https://padlet.com/songokukaiokenx8/6os04bn8zclxoigv/wish/911240770 FLOW MAP songokukaiokenx8 https://padlet.com/songokukaiokenx8/6os04bn8zclxoigv/wish/912357820 2020-11-11 11:11:20 UTC https://padlet.com/songokukaiokenx8/6os04bn8zclxoigv/wish/912357820