I have a question concerning this circuit I have found on internet since I would like to replace it with a mini dc motor vibrator.
Is there any chance someone could explain to me how it works?
As far as I can see. You have an input of 5.9V to operate and PWN 4KHz from the output of a MCU.
How does can you control the intensity of the vibrator using this circuit? I would replace the buzzer, PKLC1212E4001-R1 with a dc motor, does that seem okay?