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Topic: Theoretical complement with USB out (Read 2083 times) previous topic - next topic
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Theoretical complement with USB out

Hi everyone! This is my first post here, and... when i was about to finish it, i don't know why the pagre refreshed and i lost all what i wrote... so, i'll ask it short this time.

I want to make a jukebox, vintage style, with a single-size vinyl turntable inside. I want it to turn on when a song is being played... So i thought about a manual switch, not what i want but simple

The player will be Fb2k, cos the PC-jukebox programs that i tryed, either was really ugly or not working. In addition, the sound will be much better, and i thought that a complement with USB (or any common port) can give me a solution... Something like the MSN "now playing" feature in some way.

I can imagine it like:

Fb2k + "theoretical complement" (playing) --> USB output --> switch, USB output dependant (turns on) --> turntable turns on

vs.


Fb2k + "theoretical complement" (not playing) --> USB output --> switch, USB output dependant (turns off) --> turntable turns off

I think that the USB output don't have too much complexity, a simple YES or NO signal will be enough if the "switch" can recognize it.

Can anybody help me with that? I'll be very-too much-plus ultra-supervery grateful with

Guido (from Mar del Plata, Argentina)

Theoretical complement with USB out

Reply #1 –
It'll be easier to implement using a COM or an LPT port of the PC. If your PC has one then I can help I think.
 

Theoretical complement with USB out

Reply #2 –
If the motherboard you are using only has USB there are several possibilities. There are chips that implement a COM port via USB. The Silicon Labs CP210X is one such device. But that requires a special driver and a foobar plugin to manage it.

An alternative solution would be to use a USB DAC to play the music and control the turntable motor. I don't know what you planned to use as a DAC but a USB DAC would probably give you better sound quality than a motherboard CODEC. Just buy or build a USB DAC that uses a DAC chip which provides a MUTE signal output. The DAC chip asserts MUTE when the analog output is idle. You would use the inverted MUTE signal to control the turntable.