Android Mobile and Analog MQ-8 Hydrogen Gas Sensor based Wireless Hydrogen Gas Monitoring System with AVR ATmega32 Microcontroller and 7 Segment Display using HC-05 Bluetooth

Android Mobile and Analog MQ-8 Hydrogen Gas Sensor based Wireless Hydrogen Gas Monitoring System with ATmega32 and 7 Segment Display using HC-05 Bluetooth

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In this project, we will learn about Android Mobile and Analog MQ-8 Hydrogen Gas Sensor based Wireless Hydrogen Gas Monitoring System with AVR ATmega32 Microcontroller and 7 Segment Display using HC-05 Bluetooth. Here, we will display and monitor the concentration of Hydrogen Gas wirelessly from an Android Mobile using Bluetooth and 4 multiplexed Common Anode 7-Segment Displays.

Since, the output of the Analog MQ-8 Hydrogen Gas Sensor is analog in nature and these analog signals cannot be processed directly by the ATmega32 microcontroller. So, first this signal needs to be converted to digital value to be processed by the microcontroller. The conversion can be done with the help of ADC of the AVR ATmega32 microcontroller. After converting the analog signal to digital, the microcontroller will send the digital value of Analog MQ-8 Hydrogen Gas Sensor to the HC-05 bluetooth through USART communication protocol. This HC-05 bluetooth transmits the digital value of Analog MQ-8 Hydrogen Gas Sensor wirelesslyto the bluetooth of the Android Mobile. The bluetooth of the Android Mobile receives the digital value of Analog MQ-8 Hydrogen Gas Sensor through an Android App called Bluetooth Terminal and displays it. Apart from Andoid Mobile, microcontroller will display the Analog MQ-8 Hydrogen Gas Sensor value in 4 multiplexed Common Anode 7-Segment Displays. In this way, the concentration of Hydrogen Gas is monitored from the Andoid Mobile wirelessly and from 4 multiplexed Common Anode 7-Segment Displays.

Now, we will use some source of Hydrogen Gas near Analog MQ-8 Hydrogen Gas Sensor and we will see the change in concentration of Hydrogen Gas in Andoid Mobile and 7-Segment Displays.

Softwares Required

Hardwares Required

Name	Quantity
AVR Trainer Board-100 with ATmega32	1pc
AVR USB Programmer	1pc
Analog MQ-8 Hydrogen Gas Sensor Board	1pc
Quad 7-Segment Display Board	1pc
HC-05 Bluetooth Board	1pc
12V, 1A DC SMPS Adaptor	1pc
10 to 10 FRC Female to Female Connector	2pc
1 to 1 Connector-Female to Female	11pc