everyone. I am asking you to help me out for making original musical instrument. The goal is to vibrate a small motor by square wave signal witch is generated in a synthesizers in my Mac.
Here is what I tried;
Square wave sound (in my laptop) -> stereo output -> stereo cable -> headphone amplifier -> stereo cable -> motor
I cut the end of the stereo cable to connect the left(or right) wire and the ground wire. (please check the photo below) enter image description here
However, it doesn't work. I could hear the sound from the amplifier by headphone, so there might be problems between the amp and the motor.
Let me tell you the specs of the amplifier; make/model: Pyle Audio, PHA40 input impedance: 100K-ohm, Unbalanced Max Input Level: +15dBu output impedance: 80-Ohm, Unbalanced Max output Level: 40mW in 100ohm Max Gain: 20dB S/N Ratio: More than 90dB THD: Less than 0.03%
And the motor is DC 1.5-6V 1750-7000 from Kynix:http://www.kynix.com (<- I have no idea what does this, mA?)
Hope I can get any ideas/answers from you guys.
Thanks,
Here is what I tried;
Square wave sound (in my laptop) -> stereo output -> stereo cable -> headphone amplifier -> stereo cable -> motor
I cut the end of the stereo cable to connect the left(or right) wire and the ground wire. (please check the photo below) enter image description here
However, it doesn't work. I could hear the sound from the amplifier by headphone, so there might be problems between the amp and the motor.
Let me tell you the specs of the amplifier; make/model: Pyle Audio, PHA40 input impedance: 100K-ohm, Unbalanced Max Input Level: +15dBu output impedance: 80-Ohm, Unbalanced Max output Level: 40mW in 100ohm Max Gain: 20dB S/N Ratio: More than 90dB THD: Less than 0.03%
And the motor is DC 1.5-6V 1750-7000 from Kynix:http://www.kynix.com (<- I have no idea what does this, mA?)
Hope I can get any ideas/answers from you guys.
Thanks,
The site you mis-cite has thousands of products-- which motor??
Yes, a motor may take more power than a headphone amp can deliver, though motors vary a LOT so we need to know what is in your hand (and what you could buy).
Also most small motors expect steady current, not alternating square wave.
Yes, a motor may take more power than a headphone amp can deliver, though motors vary a LOT so we need to know what is in your hand (and what you could buy).
Also most small motors expect steady current, not alternating square wave.
+1
First, a phone amp is probably not a partner for a motor, especially a low voltage motor. Current drive capability is too low.
What's more, a motor will not be able to follow tone signals with frequencies up to maybe some hundred cycles per second.
If you want the device just to make some noise, why not use an elecromagnet driving some metal part or similar?
First, a phone amp is probably not a partner for a motor, especially a low voltage motor. Current drive capability is too low.
What's more, a motor will not be able to follow tone signals with frequencies up to maybe some hundred cycles per second.
If you want the device just to make some noise, why not use an elecromagnet driving some metal part or similar?
A small motor like the phone vibrator you tried will not likely do what you want even if you can get it to spin. As stated these things need a DC voltage to spin. When they do the vibration is created by spinning an off centered metal weight. The frequency of these vibrations is roughly controlled by the amount of DC voltage applied, and nothing short of a fully servo controlled feedback loop (either analog or digital) will allow for speed control good enough to get a fixed pitch vibration from it. Even then the vibrations would be limited to the first octave or two of audible music. Pitch changes would likely be too slow to play any up tempo music.
Examine how the driver in a reverb tank is made. Steal its guts or copy the design. Its basically a reverse guitar pickup. A coil of wire fed by an amplifier creates vibrations in a small magnet mounted on the reverb spring. You will need something more powerful than a headphone amp to feed this, but not too big, a watt of two should be fine.
Another possibility is one of those bass shakers that the boom boom car guys use. These are a bigger version of the same idea, and take a bigger amp to feed it.
Examine how the driver in a reverb tank is made. Steal its guts or copy the design. Its basically a reverse guitar pickup. A coil of wire fed by an amplifier creates vibrations in a small magnet mounted on the reverb spring. You will need something more powerful than a headphone amp to feed this, but not too big, a watt of two should be fine.
Another possibility is one of those bass shakers that the boom boom car guys use. These are a bigger version of the same idea, and take a bigger amp to feed it.
- Status
- Not open for further replies.