Dog Barking Security Alarm using Arduino, PIR Sensor and Dog Barking Sound Module
The need for home security alarm systems nowadays is a serious demand. As the number of crimes is increasing every day, there...
audio amplifier
Class-D Automotive Audio Amplifier with Hi-Fi Audio Quality and Advanced Diagnostics for Compact Audio and Alerting Systems
The HFDA801A from STMicroelectronics is a 2MHz switching pulse-width modulation (PWM) Class-D amplifier designed for compact,...
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!...
Build a Simple Stereo Audio Amplifier Board using TDA2822
An audio amplifier is an Electronic circuit that amplifies low-power audio signals to a level suitable for driving Loudspeaker...
DIY ESP32 Based Audio Player
DIY Music players are fun to build, and we previously built a few music players using Arduino and a dedicated MP3 module. Now...
Audio Equalizer / Tone Control Circuit with Bass, Treble and MID Frequency Control using Op-Amp
Tone control or Active equalizer circuit especially bass, treble, and MID control based Equalizer is an important circuit in...
Voice Controlled FM Radio using Arduino and Google Assistant
Nowadays, most of us like to listen to music, with our smartphones. But a few years back, this was not the case, at that point...
Digital Audio Volume Control Circuit using PT2258 IC and Arduino
A potentiometer is a mechanical device using which one can set the resistance according to the desired value, thus changing the...
Raspberry Pi Audio Amplifier HAT from Infineon for Active Speakers with Wireless Music Streaming
Infineon Technologies AG has introduced a self-contained Raspberry Pi audio amplifier HAT (Hardware Attached on Top) board that...
Stereo Audio Pre-Amplifier Circuit with Bass and Treble Control using Transistors
Often times, we need to control bass, treble, and volume of our audio signal before passing it through amplification stages to...
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