Will astable multivibrator work?What are you referring to as a "buzzer"? Are you looking for a way to tell the buzzer which tone to produce or do you want the buzzer to warble?
Maybe it is supposed to be a photodiode to control the buzzer based on light level?The LED in that strangely-drawn circuit is upside down.
I also had a little trouble with “buzzer” for piezos when I first started seeing it but it is standard terminology now. The schematic symbol doesn’t distinguish, and the designation is “BZ”. I think it has come to mean ”a self contained device that produces and audible signal when voltage is applied”, which seems fair enough.With the circuit shown, and the internal oscillator piezo sounder, NO, the frequency is fixed.
In my vocabulary a buzzer is an electromechanical device, with an electromagnetic arrangement to open a contact that removes the voltage from the coil, (mechanical feedback.)
It seems to be related to this circuit. If so, LS1 should be BZ1, a small piezo buzzer.hi,
The LS1 label near the 'buzzer' suggests to me a small Loud Speaker.
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Automatic colour cycling I think.The LED in that link (and in post #1) is referred to as RGB, yet has only two leads ??
YesMaybe it is supposed to be a photodiode to control the buzzer based on light level?
YesThe LED in that link (and in post #1) is referred to as RGB, yet has only two leads ??