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Metronome using astable mode of 555 timer IC

By Ashutosh Bhatt

The circuit based project describes an electronic metronome, which produces toc-toc sound at regular time intervals. Metronome is popular as a synchronizing tool for musicians through which they can match the tempo of their beats and hence, perform better. Known to be a greek invention, metronome breaks into two terms: metron which means measure; and nomos which decodes to "law". Metronome has been a mechanical invention which, with advancement in time, has come to be electric and even software based. Explained here is an electronic circuit that works as a metronome.

The metronome circuit uses 555 timer IC at its heart along with a few passive components and a speaker that works as an output device for the metronome.


 

This project about metronome circuit uses a 555 in astable mode with a variable resistor between pin7 and VCC .R1 here is of 1K, R2 is of 1K and C1 is 0.22uF. It produces a frequency range from 26 hertz to 2186 hertz. The output of 555 is taken on a speaker of 8, 0.5 watt rating through a capacitor of 10uF to filter noise. By varying the resistance of variable resistance we can adjust the spacing between the sounds.

Circuit Diagrams

Circuit-Diagram-Metronome-astable-mode-555-timer-IC

Project Components

  • 555 Timer IC
  • Capacitor
  • Preset
  • Resistor
  • Speaker


Filed Under: 555 Timers, Electronic Projects
Tagged With: 555 timer circuit, ic, metronome
 

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