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Urgent:Question regarding the vibration and sound

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back4track

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I want electronic circuit to convert the sound to vibration
Please help me with everything that is available with you, video, text file or anything !

---------- Post added at 23:44 ---------- Previous post was at 22:21 ----------

please help :sad:
 

thanks a lot to reply , I'm very weak in electronics sorry for my ignorance
do you know of vibration in the phone which is what I want, for example when you speak will result in vibration piece with a degree in a specific device, I want to create a device can do that , I hope that's will be clear now ! thank you again
 
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I think I get what the OP wants now. You want something to vibrate like a mobile phone when some sound is detected. Is that correct? If that's so, you have to define what kind of sound is to be detected and under what conditions.
 

vibrating motors are like these...
**broken link removed**
**broken link removed**

but as Pjdd asked
define what kind of sound is to be detected and under what conditions.
Click to expand...
 

thx a lot Pjdd , type of sound is almost like the voice of human beings, the greater the volume increased vibration
 

Bass sounds to vibrations.
Google `bass shaker` , `butt kicker`
 

Can LM3915 be used by placing resistors from pin 10 to 18 in increasing resistance value.... Something like below....
fdhxhbfg.JPG
 

It's hard to say for sure because National Semiconductor does not publish details about the LED drive circuit in their datasheet. Why do you want to use that scheme?

Another thing is that you have reversed the LED polarities. Is that intentional? And where does the output go to?
 

Pjdd said:
It's hard to say for sure because National Semiconductor does not publish details about the LED drive circuit in their datasheet. Why do you want to use that scheme?

Another thing is that you have reversed the LED polarities. Is that intentional? And where does the output go to?
Click to expand...

Those reversed polarities are not for led's.... Those are diodes in reverse to resist the flow of current back to pins...
The ic would drive the vibrating motors.... As posted by "back4track" => "type of sound is almost like the voice of human beings, the greater the volume increased vibration", so I thought this ic would help....
 

The vibrate motords use 90mA. But the outputs of an LM3915 has a max output of about only 30mA each. The motors might not start running on such a low current and the LM3914 will get very hot.
 

Okay.... That means the output with 30mA max current have to be feeded on base of a transistor with proper collector current to get 90mA or more.... I think this circuit can work if properly designed....
 

The outputs of an LM3914 or LM3915 go low when active. Their current is set by the current to ground from pin 7 times about 12.5. A graph in the datasheet shows the exact current.
The vibrating motors might draw 90mA when they run but might draw much more to get them started running due to their inertia.
 

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