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Step 12: Mount

For our purposes, the flat side of the cabinet handle will be considered the front.

Pass the red and black wires of the piezo through the hole you just drilled from front to back.

Epoxy the piezo to the cabinet handle such that the flat side of the piezo is facing out.

Be careful to leave a tiny bit of space between the cabinet handle and the solder points on the piezo (just in case the handle is conductive).
<p>Is there any replacement for mpf102</p>
is this workng? or can i replace the piezo with a microphone??
<p>Gr8</p>
<p>this project's piezo is not enough filtering. when we turn unit on i hear static and if i lightly tap the Piezo i <br>hear the tapping but i dont hear any heart beat, not sure what to do? Please send me new stethoscope new peoject</p>
<p>I do not think the Piezo is sensitive enough, if i was to use a microphone will this improve my chances of repairing this problem. Could someone please respond to my questions?</p>
<p>We made the Electronic Stethoscope and it does not work, when we turn unit on i hear static and if i lightly tap the Piezo i hear the tapping but i dont hear any heart beat, not sure what to do???/</p>
Got a new crossbow. Now only if somebody would get me a zombie...
It's my first time doing this stuff so I'm wondering if I can replace the MPF102 transistors because the shops near me don't have them
How important is it to have a 90dB piezo pulse? How can I tell what type of Piezo pulse I have? <br>
hello <br>I have seen the draft electronic stethoscope and my really liked but I need to know how to calculate the value of the resistance and capacity of the circuit <br>thank you kindly answer me <br>I hope to answer as soon as possible <br>
Where do you wire the battery in circuit board?
Where the 9V is and where the GND is. All points going into 9V go to the positive and all points going to GND go to the positive part of the battery.
Can someone lend me a schematic? It will a great help. Thanks!
I am a novice interested in building one of these... Several of the parts are missing and I'm scared to order another piezo for example without understanding the impacts of different dB and electrical ratings. Any ideas anyone?
Could this plug in to speakers? <br>
How to wire the panel mount audio jack? Im still prototyping on breadboard and Im hopelessly stuck...
is there any equivalent of lm386. I do have lm380 can i use it.....?
I'm actually building this with LM358. It should work but make sure you use the correct pinouts.
I'm so building this one :)
Nicely done!
Great instructable :D nice video as well, although it would of been nice to see the stethoscope actually working :P

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Bio: My name is Randy and I founded the Instructables Design Studio. I'm also the author of the books 'Simple Bots,' and '62 Projects to ... More »
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