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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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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Clap Switch/Sound Activated Switch with Timer Using PIC12F683 Micro-Controller

Clap Switch/Sound Activated Switch with Timer Using PIC12F683 Micro-Controller Circuit’s works on 5V DC, Its trigger the relay on every two clap sound, and keep output high for 1 to 4 Seconds depending on  jumper settings J1, J2. On board Potentiometer provided for sensitivity adjust. Relay output is NO/NC. On board Power LED and Output LED.    

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Sound To Light Effects Using LM358 Op-Amp LEDs & Microphone

This PROJECTS  will turn your favorite music into light effects, a microphone picks up the sound and gives  light effects with 6 Red LEDs, ideal for creating fun atmosphere at parties & discos. Supply 9V-12V DC. Features Supply 9V-12V DC (PP3 9V Battery) On Board Preset for Gain Adjust 6 On Board LEDs On Board Condenser Microphone SMD based small

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