J hook those wires together for an easy and super strong connection. Just strip an extra 1/4” of wire and bend it back on itself. If the wire is old and crusty dab a bit of flux on there and tin it first. Great soundtrack!!!!
I purchased a 34 mm piezo, but attaching it to the amplifier does not work. But with the test with a led it shows that it is fully functional (without any power supply). I need something that will allow me in a professional way to hear all the noises that are present in my home (noise heating\appliances, creaking of the wood in the roof, etc.), and I need to be able to hear all the noises that are present in my home. Also to detect the speech of my neighbors (since I have to live damaged by this family for over two years without being able to react.........) through the dividing wall of the cottage. I tried using a 'speaker as a microphone, it works but I need to try it with a pre-amplifier + audio amplifier and a speaker. I await further advice. Thank you very much.
Hey! The contact mic picks up the vibrations of what it is in contact with, so if you attach it to for example a metal plate, a spring or an empty wooden case, there will be some reverberation from the object. Other than that I can't think of what might cause the effect.
nice background music
J hook those wires together for an easy and super strong connection. Just strip an extra 1/4” of wire and bend it back on itself. If the wire is old and crusty dab a bit of flux on there and tin it first.
Great soundtrack!!!!
thnak you @zherbin!
I purchased a 34 mm piezo, but attaching it to the amplifier does not work. But with the test with a led it shows that it is fully functional (without any power supply). I need something that will allow me in a professional way to hear all the noises that are present in my home (noise heating\appliances, creaking of the wood in the roof, etc.), and I need to be able to hear all the noises that are present in my home. Also to detect the speech of my neighbors (since I have to live damaged by this family for over two years without being able to react.........) through the dividing wall of the cottage. I tried using a 'speaker as a microphone, it works but I need to try it with a pre-amplifier + audio amplifier and a speaker. I await further advice. Thank you very much.
You might need a high input impedance preamp cause the signal is too weak
Can you make it work with stereo jack?
Up to what depth does it work? For example, a room 20 meters away from each other, do I get audio results? Thank you very much.
Thanks for sharing…. Time for me to make one
Nice
This is so helpful. Thank you so much!
Hi, have you tried a low noise amp circuit for increase the piezo signal? Im looking to make that. Thanks for the video
Hey! I made one exactly like yours. Thanks. Mic works gut but the problem is there is delay+reverb effect.
May you help me about it ?
Hey! The contact mic picks up the vibrations of what it is in contact with, so if you attach it to for example a metal plate, a spring or an empty wooden case, there will be some reverberation from the object. Other than that I can't think of what might cause the effect.
@@Zherbin Thank you so much!
To 3.5mm jack can i do like this?
Sure!
@@Zherbin can u explain how to do it with 3.5mm I want to connect it to phone to record. Please reply asap
I have 3.5mm Jack cable and I want to record with phone 😫 please help...
you can do all the same steps, just use 3.5mm jack. Alternatively, pick up a 6.35mm to 3.5mm adapter cable, they're fairly cheap.