Electronics Projects

IoT Based Biometric Door Lock using Fingerprint Sensor and NodeMCU ESP8266

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Fingerprint scanner sensors are used at many places like Industries, Offices, Schools, Colleges and Hotels. By embedding IoT with the Fingerprint sensor, we can elevate the Fingerprint-based security system project to the next level. So in this project tutorial, we are going to build and IoT Based Biometric Security System using the GT5111C3 fingerprint...

Line Follower Robot using Arduino Uno

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The line follower, as the name implies, is an automated self-driven vehicle (which follows line). In general, there are two types of line follower. In one type, the line follower follows the black line on the white surface, whereas, in the other type, it follows the white line on the black surface. These types...

IoT Based Air Pollution Monitoring using NodeMCU and MQ135 Gas Sensor

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There are different types of gas sensors to detect different gases. Here in this project we are going to use MQ135 gas sensor to sense the pollution content in the surrounding area and then to monitor these values over the Webpage. The circuit consists of a simple connection and takes fewer components to have...

IoT Based Smart Dustbin using NodeMCU

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In this project tutorial, we are going to make an IoT based Dustbin. You can check whether the dustbin is full or empty through a webpage. This dustbin updates its status in percentage in every 5 seconds, and when the dustbin is filled more than 70%, it sends an email that your dustbin is...

Water Level Indicator Circuit with Alarm using 555 Timer IC

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We use water pump motors to draw groundwater and fill it in our tanks. There may be cases in which the user switches ON the motor and forgets it. This leads to wastage of water. Now to reduce these kinds of water wastage, we are going to build a water level indicator circuit using 555 timer...

Distance Measurement using Ultrasonic Sensor and Arduino

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Distance measurement of an object through the air is used in a large number of applications such as obstacle avoider robot control, vehicle control, blind stick, medical application, etc. The ultrasonic sensor is one of the cheapest and easily available option to measure distance for similar requirements. This sensor can be easily interfaced with...