This metronome circuit is not modern but is cheap and reliable. The well known 555 is connected as an astable multivibratos in this electronic metronome and produces a regular train of impulses which ...

This mini metronome gives a linear scaled output and 40 to 208 beats per minute. 1- Q1 and Q2 transistors provide linear frequency variation of IC1 depending on the changes of P1 value. 2- Q3 ...