Timer 555 Cricket Chirping

this project followed by 3 other projects which all are in a same category with different approaches. we just trying to make/simulate nightly crickets chirping which is one of the loveliest natural sounds for most peoples. all provided projects in this group provides realistic sound as best as possible with no filtering no amplifying and using fewest cheapest strongest components. OK enough boasting lets do it!

we have 3 different 555 ic's used in this project where all of them are in Astable mode. we just compine two ic's into single one for more fun so you see one NE556 (which is two NE555) and one NE555. skip explaining timer 555 as there is many useful project's/tutorial's on it available with taking a look in instructables.com. but let me provide some usefull links at least :

all we do is following the Astable calculation to provide desired frequencies. at step1 i placed an image that is a very approximate preview of chirping result which demonstrates duty and frequency used just with changing two resistors and capacitor per IC.

Source: Instructables.com

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Keywords:

Cricket (insect) • Cricket (insect) • Amplifier • 555 timer IC • 555 timer IC • 555 timer IC • Instructables • Resistor • Capacitor • Integrated circuit •