audio
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Getting Started with ESP32-P4X-EYE: ESP32-P4 Vision Development Board Vision development boards are useful when an embedded project needs to combine image capture, local display, audio input, storage and wireless connectivity in a single platform. The ESP32-P4X-EYE takes this approach around the ESP32-P4, adding an ESP32-C6 wireless module, a 2MP MIPI-CSI camera, a 1.54-inch SPI LCD, a digital microphone, MicroSD storage, USB… |
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A DIY Bluetooth Speaker That is Smaller Than an Earbud Shrinking consumer electronics to their practical limits is a recurring theme in the DIY hardware space, and a recent project from the YouTube channel Gadget Industry takes that idea to an impressive extreme. The build centers on a Bluetooth speaker so small it undercuts the size of a single AirPods earbud, yet still manages to function like a conventional portable speaker. At the core of the… |
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Speechless Home Automation with ESP32-S3 Box 3 By Arun Kumar Human–machine interaction today is heavily centered around speech. Voice assistants, smart speakers, and voice-controlled home automation systems assume that the user can speak clearly and consistently. However, this assumption excludes an important group of users: People with speech impairments Individuals who are temporarily unable to speak Users with… |
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iBIGS - Infant Behavior Intelligent Guardian System By Akash A S The iBIGS (Infant Behavior Intelligent Guardian System) is a smart baby monitoring and sleep-aid device built using the Adafruit MEMENTO (ESP32-S3) platform. The system is designed to help parents monitor infants, detect crying or movement, and provide soothing sounds to help babies sleep. … |
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Build a Compact and Portable DIY Bluetooth Speaker This DIY Bluetooth Speaker is a budget-friendly project that delivers clear wireless audio using affordable components. With the help of a DIY Bluetooth Speaker amplifier, the Bluetooth module sends the audio signal to the amplifier, which then provides the necessary power to drive the speakers. It can also be used for building a DIY Bluetooth portable speaker. The… |
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ESP32 Offline Voice Recognition Using Edge Impulse Voice recognition is becoming an essential part of the Internet of Things (IoT), allowing us to control, monitor, and interact with devices hands-free. At its core, ESP32 speech to text works by capturing audio through a microphone, processing it, and converting it into text that devices can understand. This text is then used to trigger commands, just like how… |
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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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Different Types of Transformers: Step-Up, Step-Down & More It is important to know the different types of transformers for electrical engineering applications and to design power systems. Transformers are electromagnetic devices based on the principles of electromagnetic induction discovered by Michael Faraday, and they perform very important functions for power generation, transmission, distribution, and electronic circuits. This large reference… |
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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… |
