audio amplifier
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Getting Started with the PUI Audio AMP2X15 Audio Amplifier Board and Speakers Adding a speaker to an embedded project is not always as simple as connecting it directly to a microcontroller or single-board computer. Most audio sources provide a relatively low-level signal, while a speaker needs more power to produce useful sound output. This is where an audio amplifier becomes important. The PUI Audio AMP2X15 is designed to bridge this gap,… |
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How to Add a Loudspeaker to LiteWing ESP32 Drone for Wireless Audio Announcement In this project, we upgraded LiteWing, an ESP32-based development drone by adding a lightweight Bluetooth speaker system to extend its capabilities beyond flight. By adding a simple Bluetooth audio setup, the drone can now deliver real-time announcements, voice messages, or music directly from the air without requiring any additional coding. The entire system works… |
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DIY Piano Doorbell That Replaces the Classic Chime with Musical Notes A simple piano doorbell that replaces the usual chime with real piano notes was demonstrated in a recent project published by Arpan Mondal. The system combines microcontroller-based control with audio playback to create an interactive doorbell. At its core is an ESP32-S3, which takes inputs from 5 keys styled like a tiny piano. Each key is built using micro limit switches and connected… |
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What is Amplitude Modulation? Complete Guide with Formula, Circuit Diagram & Practical Demo Amplitude modulation (AM) was first introduced to enable long-range wireless audio communication, representing a major advancement over wireless telegraphy using spark-gap transmitters. Understanding what is amplitude modulation and how it works is fundamental for electronics engineering students and professionals working with radio frequency circuits. This… |
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SounDigital Boosts Audio Performance with Infineon’s CoolGaN Technology in New 1500W Class D Amplifier SounDigital, known for its high-performance audio amplifiers, has integrated Infineon’s CoolGaN transistors into its new 1500 W Class D amplifier. This upgrade makes the amplifier more energy-efficient, compact, and powerful, while also improving sound quality. SoundDigitals uses Infineon’s enhanced Gallium Nitride (GaN) transistors… |
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Simple Arduino Voice Recorder for Spy Bug Voice Recording Planning to buy a small voice recorder to record voices or sounds in an environment and store them in its memory? Think again! You can easily build your own voice recorder by following a few simple steps. This project focuses on building an Arduino Based Voice Recorder, which can also be abused as a spy bug. Our spy bug uses a small microphone… |
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Build Digital Cracker using Arduino and JQ6500 MP3 Module As the winter season approaches, comes the festival of lights in INDIA. Yes, we are talking about Diwali, known for lighting up firecrackers. But they don't just light up the party; they also cause air pollution and bring health issues. So, to reduce pollution and improve our health we decided to build an Electronic Firecracker using Arduino which makes a loud sound… |
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Wireless Audio Transfer Using LASER Light In this article, we are going to discuss how to transfer audio through laser light. This is a fun little project, and the concept is similar to what we see in fibre optics cable. We will use a laser light to send data from one point to another. To be particular, in this project here, we are going to transfer our voice from one point to another by shining a laser light on a solar panel. This… |
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A Simple DIY Bluetooth Audio Player using Wireless Hi-Fi Amplifier Module The Bluetooth Amplifier Module is useful for DIY projects for creative and hobbyists. The module’s Bluetooth connectivity makes the project connect wirelessly and gives hustle-free entertainment. The board can work on Lithium-ion/Li-Po or Lead Acid battery, which is used to make the device portable. Its design makes it easy to implement… |
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Simple DIY Wireless Bluetooth Speakers using Audio Amplifier For those who love tinkering with electronics, making a Bluetooth speaker from scratch can be a satisfying and fun experience. In this article, we'll learn a step-by-step guide on how to build your very own wireless Bluetooth speaker using basic electronic components under 9$ or 700rs. We have previously built many audio-related projects… |
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Simple DIY FM Receiver Circuits on the Internet - Do they Really Work? Recently, we thought of building a simple FM receiver circuit, so, like always, we started googling for possible circuits that can be used to fulfil our requirements, and as expected, we found a lot of circuits on the internet, but the question remains, how good or useful will they be when we put those circuits to the test? Because just like us, we found a lot of… |
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Digital Input Automotive Quad Power Amplifier Combines High-Definition Sound with Class-G Efficiency STMicroelectronics has introduced the TDA7901 automotive amplifier which is a single-chip quad-bridge amplifier in advanced BCD technology integrating a full D/A converter, digital input for direct connection to I2S (or TDM), and powerful MOSFET output stages. The TDA7901 is suited to use in many in-vehicle information (IVI) systems, such as head units, smart… |
