metronome using 555 timer

A metronome is a simple circuit produces audible click sound at a regular interval. Trimmer potentiometer provided to set the BPM, typically in beats per minute (BPM). Musicians use the device to practice playing to a regular pulse. Features Supply 5V-9V DC Download PDF Document

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480 Seconds Voice Record/Playback Circuit with PCB Layout Using ISD17240 IC

Project has been designed for record & playback multi voice massages applications using nuvton ISD17240 IC.  Messages are stored in flash memories made in unique Multilevel Storage Technology (MLS).  Circuit  provides high quality audio recording and simple operations.  Circuit operates in dual mode standalone or micro-controller SPI mode.  Onboard tactile switches for standalone mode and 10 (2×5) pin box header

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VOICE ECHO GENERATOR- SOUND TO ECHO SOUND CONVERTER CIRCUIT

A project has been designed around Holtek,s HT8970 voice echo IC.  Project can be used in various audio systems karaoke, toys, Animatronics, shows, displays, exhibitions, and sound equipment’s. The HT8970 is an echo/surround effect processor. It is designed for various audio systems including karaoke, television, sound equipment’s, etc. The chip consists of a built-in pre-amplifier, VCO or Voltage Control OSC,

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Tiny Metronome Using 555 Timer and Buzzer

A metronome is a device that produces an audible click  sound at a regular interval that can be set by the Trimmer Potentiometer , typically in beats per minute (BPM). Musicians use the device to practice playing to a regular pulse. Musicians practice with metronomes to improve their timing, especially the ability to stick to a tempo. Metronome practice helps

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Multiple-Message Record/Playback Module Using ISD1932/ISD1964

This Module has been designed around Nuvoton’s ISD1932 ChipCorder® is the newest single-chip multiple-message record/playback series with dual operating modes (address trigger and direct trigger) and wider operating voltage ranging from 2.4V to 5.5V. The sampling frequency can be selected from 4 to 12 kHz via an external resistor, which also determines the duration from 10.6 to 32 seconds. These

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