basic circuits
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ESP32 Based Internet Radio using MAX98357A I2S Amplifier Board Analog radios are becoming extinct in this digital world since everything, from movies to songs, is being directly streamed from the Internet today. Let’s see how an Internet radio can be made by leveraging some simple digital electronics, coding, and an active Internet connection. Now, those who are following us regularly might already know that we have built a Raspberry Pi… |
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Introduction to Impedance Matching and How to use an Impedance Matching Transformer for your Design If you are an RF Design Engineer or anyone who has worked with Wireless Radios, the term “Impedance Matching” should have struck you more than once. The term is crucial because it directly affects the transmission power and thus the range of our Radio modules. This article aims to help you understand what Impedance Matching is from the basics and will also help you to design… |
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Superheterodyne AM Receiver - Working with Block Diagram and Schematics A superheterodyne receiver uses signal mixing to convert the input radio signal into a steady intermediate frequency (IF) that can be worked with more easily than the original radio signal, which has a different frequency, depending on the broadcasting station. The IF signal is then amplified by a strip of IF amplifiers and then fed into a detector that outputs the audio… |
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Relaxation Oscillator using Op-amp An operational amplifier is an integral part of Electronics, and we previously learned about Op-amps in various op-amp-based circuits and also built many oscillator circuits using op-amps and other electronics components. An oscillator generally refers to the circuit which produces periodic and repetitive output, like a sine wave or square wave… |
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Interfacing ADXL345 Accelerometer with Arduino UNO We all know about accelerometers and gyroscopes; they are primarily used to detect acceleration. While an Accelerometer can measure linear acceleration, the gyroscope can help find the rotational acceleration. A gyroscope is used to measure angular velocity, which uses the Earth’s gravity to determine the orientation of the object in motion. There is a sensor like… |
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LED Display Board using P10 LED Matrix Display and Arduino Display advertising plays a very important role in marketing, and there are several advertising methods like newspapers, posters, glow signboards, etc.. Still, digital LED display boards are getting popular nowadays because of their reliability and advantages. Although they are a little expensive, they are durable and customizable. P10 LED display boards have… |
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Frequency Compensation of Op-amp and why it is important in your Op-Amp Circuits Operational Amplifiers or Op-Amps are considered the workhorse of Analog Electronic Designs. Back from the Analog computers era, Op-Amps have been used for mathematical operations with analog voltages, hence the name operational amplifier. To date, Op-Amps are extensively used for voltage comparison, differentiation, integration, summation and many other things. Needless to… |
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Bluetooth Module Interfacing with ESP8266: Controlling an LED This comprehensive guide shows you how to interface the HC-05 Bluetooth module with the ESP8266 NodeMCU using Arduino IDE. Nowadays, Bluetooth has become an integral part of digital devices, and it comes built-in in most of the devices such as smartphones, laptops, PC, cameras, Watches, Fitness Bands and many more. Bluetooth has always been the dominant protocol in wireless… |
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Interfacing Vibration Sensor Module with Arduino There are several critical machines or expensive equipment which suffer damage due to vibrations. In such a case, a vibration sensor is required to find out whether the machine or equipment is producing vibrations or not. Identifying the object which is continuously vibrating is not a tricky job if the proper sensor is used to detect the vibration. There are several types of… |
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Automatic Medicine Reminder Using Arduino When it comes to our loved ones, we always want to keep them healthy and fit. But what will happen if they get ill and forget to take medicine on time? We would be worried, right? At hospitals, there are many patients, and it is difficult to remind every patient to take medicine on time. The traditional ways require human efforts to remind them to take medicines on… |
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Lead Acid Battery: Working, Construction and Charging/Discharging Almost every portable and handheld device consists of a battery. The battery is a storage device where energy is stored to provide power whenever needed. There are different types of batteries available in this modern electronics world, among them Lead Acid battery is commonly used for high power supply. Usually Lead Acid batteries are bigger in size with hard and heavy… |
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Cycloconverters – Types, Working and Applications Power supplies can be classified into two broad categories: AC power supply and DC power supply. Since only AC power can be generated economically, most electrical machines run on AC power. However, the standard voltage and frequency from generating stations may not suit certain industrial machines. This is where power electronic converters like inverters and cycloconverters… |
