In this project, we will build an IoT based smart kitchen monitoring system using NodeMCU. This system can monitor the temperature, humidity, Gas and motion using sensors will be display on OLED, also sending this data into the blynkapp through WI-FI. User can access this device with his/her credential using mobile/laptop.   The kitchen is one of the important places in a house. The safety factor is the main aspect that must be taken into account during the activity in the kitchen. The existence of gas leakage, uncontrolled fire, excessive temperatures & a moist environment must be quickly identified and addressed.  Apart from this, this system can monitor the motion using PIR sensor and indicate as this through LED which is in Blynkapp. If the system detects the gas, it will turn ON the buzzer for alerts.   The system makes a use of NodeMCU microcontroller. The project aims in designing a smart kitchen using IOT and NodeMCU module. NodeMCU is an open-source platform based on ESP8266 which can connect objects and let data transfer using the Wi-Fi protocol. In addition, by providing some of the most important features of microcontrollers such as GPIO, PWM, ADC, and etc, it can solve many of the project's needs alone.  

The major features of this project are:

• Using Blynk app for wireless monitoring and alerting.
• Using NODEMCU to achieve this task.
• Using IOT technology.
• DHT11 sensor-based temperature and humidity detection.
• MQ-135 based Gas detection.
• PIR based motion detection.
• Audible alerts using Buzzer.
• Visible alerts using LCD display.

    The major building blocks of this project are:

• Adapter Power Supply.
• NodeMCU
• Dht11(temperature, Humidity Sensor)
• MQ-135 Gas sensor.
• PIR Sensor.
• OLED
• Buzzer

    Software’s used:

1. Arduino IDE Studio Compiler to write the program.
2. Embedded C language.
3. BlynkAPP
4. Express SCH for Circuit design.

   

Regulated Power Supply:

     

Block Diagram:

video: