Hello, I have a simple question I'm hoping someone may please help me out with. My kids have a toy stethoscope that used to make a heart rate sound when a button was pushed down (as if they were listening to your heart). It quit working and I took it apart. It uses 2 small 1.5V batteries for a total of 3V. The tiny speaker that was in there is completely ruined along with the button/switch. I'd like to re-do the circuit/parts still using 3V.
What is a very simply and small circuit that would emulate a heart rate sound using 3V that I could play out a tiny piezo or speaker? I can't seem to find any examples on the internet for this. Any examples or links to a circuit diagram would be greatly appreciated. I'd order the parts and build it to fix this.
Thank you very much,
NLopes
What is a very simply and small circuit that would emulate a heart rate sound using 3V that I could play out a tiny piezo or speaker? I can't seem to find any examples on the internet for this. Any examples or links to a circuit diagram would be greatly appreciated. I'd order the parts and build it to fix this.
Thank you very much,
NLopes