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solarice · 26 August 2014, 20:56

Find the datasheet for the buzzer if you can to check if its the correct type.

Also maybe the transistor is faulty? Are you using the same transistor or a different one, if different check to makes sure the emitter, base, collector are the same way around.

I'm using the Hycom HY-05 Buzzer on mine works between 3v and 8v. 5v rated.

I've ended up putting a 100 ohm resistor in between the speaker and +ve just to bring the volume down a bit to where its close enough to original drive for it not to annoy me.

26 August 2014, 20:56	#482
solarice Registered User Join Date: Jul 2014 Location: UK Posts: 38	Find the datasheet for the buzzer if you can to check if its the correct type. Also maybe the transistor is faulty? Are you using the same transistor or a different one, if different check to makes sure the emitter, base, collector are the same way around. I'm using the Hycom HY-05 Buzzer on mine works between 3v and 8v. 5v rated. I've ended up putting a 100 ohm resistor in between the speaker and +ve just to bring the volume down a bit to where its close enough to original drive for it not to annoy me.