Vermes
Advanced Member level 4
This is a project of digital delaying line (echo camera) wth which you can get different sound effects such as: „Flanger”, „Chorus”, „Echo” and other, depending on the setting of regulatory elements. The line is also equipped with a memory on which you can record a short sentence such as in a stationary microphone of a CB radio.
This module consists of a headphone amplifier so you can eavesdrop during the modulation. Pin 13 is used for modulation of VCO generator in order to have „Chorus” effect by applying a triangular waveform with adjustable amplitude and frequency from 0,1Hz to 200Hz, maximum 5Vpp.
Note! The feedback was optimally set for the resistance fof 47k. When you do not use headphone amplifier, connect together pins 7 and 8. The system is protected against accidental supply.
Parameters:
- input voltage approximately 100mV max
- supply voltage 7-16V
- supply current 15-30mA
- output voltage approximately 500mV
Assembled module:
PCB from the paths side:
Link to original thread (video and useful attachment) - Cyfrowa linia opóźniająca