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MP3 Player Circuit It is always interesting to build things that could be used in our day to day life and it gets more interesting when the same can be built easily at a very low cost. In this tutorial we will learn how to build a simple yet powerful MP3 player that could play any MP3 song, the volume and track can also be adjusted with the help of push buttons. With some extra effort you can… |
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Fingerprint Based Biometric Attendance System using Arduino Attendance systems are commonly used systems to mark the presence in offices and schools. From manually marking the attendance in attendance registers to using high-tech applications and biometric systems, these systems have improved significantly. In our previous projects, we have covered few other electronic attendance system projects using RFID and… |
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Simple Smoke Detector Alarm Circuit Smoke Detectors are very useful in detecting smoke or fire in buildings, and so are important safety parameters. In this project, we are going to build a Simple Smoke Detector Circuit without using any Microcontroller. This circuit triggers the Buzzer whenever it detects Smoke or fire nearby. This circuit mainly uses the MQ6 Smoke/Gas sensor to… |
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Arduino Data Logger (Log Temperature, Humidity, Time on SD Card and Computer) As Engineers/Developers we always rely upon the data collected to design or improve a system. Recording data and analyzing them is a common practice in most of the industries, here we are building Arduino Data Logger Project where we will learn how we can log data at a specific interval of time. We will use an Arduino board to read some data (here temperature, humidity, date… |
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DIY Speedometer using Arduino and Processing Android App In this project we make a Cool Speedometer for bikes or any automotives by using Arduino which broadcast the speed using Bluetooth to an Android application that we created using Processing. The complete project is powered by an 18650 Lithium cell and hence highly portable along with your vehicle. To spice it up a bit more I have added the option of… |
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Arduino Weight Measurement using Load Cell and HX711 Module Today, we are going to build an Arduino weight machine by interfacing a Load Cell and an HX711 Weight Sensor with Arduino. We have seen weight machines at many shops, where the machine displays the weight just by placing an item on the weighing platform. So here we are building the same weighing machine by using Arduino and Load cells, having a capacity of measuring up to… |
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Smoke Detector using MQ2 Gas Sensor and Arduino Smoke Detectors are very useful in detecting smoke or fire in buildings, and so are the important safety parameters. In this DIY session, we are going to build a Smoke Detector Circuit which not only sense the smoke in the air but also reads and displays the level of Smoke in the Air in PPM (parts per million). This circuit triggers the Buzzer when Smoke level… |
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IoT based Air Pollution Monitoring System using Arduino In this project, we are going to make an IoT Based Air Pollution Monitoring System in which we will monitor the Air Quality over a webserver using internet and will trigger a alarm when the air quality goes down beyond a certain level, meaning when there are sufficient amount of harmful gases are present in the air like CO2, smoke, alcohol, benzene and NH3. It will display… |
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Frequency Counter using Arduino Almost every electronic hobbyist must have faced a scenario where he or she must measure the frequency of a signal generated by a clock or a counter, or a timer. We can use an oscilloscope to do the job, but not all of us can afford an oscilloscope. We can buy equipment for measuring the frequency, but all these devices are costly and are not for everyone. With that in… |
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Raspberry Pi PWM Tutorial Raspberry Pi is an ARM architecture processor-based board designed for electronic engineers and hobbyists. The PI is one of the most trusted project development platforms available today. With a higher processor speed and 1 GB of RAM, the PI can be used for many high-profile projects, such as image processing and the Internet of Things. To do… |
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Interfacing ADC0808 with 8051 Microcontroller ADC is the Analog to Digital converter, which converts analog data into digital format; usually, it is used to convert analog voltage into digital format. Analog signal has an infinite no of values, like a sine wave or our speech, ADC converts them into particular levels or states, which can be measured in numbers as a physical quantity. Instead of continuous conversion, ADC… |
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Simple Audio Amplifier using 555 Timer IC 555 time IC is very powerful and versatile IC, it can be used in many forms. In this tutorial we are going to see how a 555 IC can be used as Audio Amplifier. A low power audio signal can be amplified using 555 Timer IC.
This circuit is divided into two parts: part one is Preamplifier circuit, which consist a BC547… |
