The 555 VCO is a tunable 555-based voltage controlled oscillator. The output signal is also in the audio range and can be used to create notes! Kit Parts SMT 555 VCO printed circuit board (10.52 ...Read More…
The 555 VCO is a tunable 555-based voltage controlled oscillator. The output signal is also in the audio range and can be used to create notes!
Have a potentiometer set between 0 and 3.3V with its variable resistance value output connected to "Control". Connect "Output" to an audio jack of your choice, and in turn your speaker. When you adjust this external potentiometer, this will change the audio frequency (or note). To change the quality of the note you've set, you can use a screwdriver to adjust the thumb potentiometer on the board!
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