Client Requirement(Base System) The fundamental objective of this system is to provide a latching control system that provides a start and stop output, based on the presence of 1 of 2 audio frequency tones. The start and stop outputs are indicated by a start (Green LED) and a stop (Red LED) indicator. When the start tone is applied, the start indicator will come on, and remain on, until the stop tone is applied. If neither tone is applied, then the indicators retain their previous state. The base system is powered from +/- 5V, and the tone amplitude for each tone is 2Vp-p. Pick any two frequencies .
i wanna use 555 timer but dont know how to feed audio frequency as input
i wanna use 555 timer but dont know how to feed audio frequency as input