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CMoy in a Zippo lighter

post #1 of 19
11/29/10 at 1:13pm
Thread Starter 

f63389e7_phpAxnnqqAM.jpg

 

fe688802_Zippo1.jpg

 

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5d1cbe71_phpkgvKLKAM.jpg


Edited by Reintz - 10/18/11 at 11:55am
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post #2 of 19
11/29/10 at 6:41pm

that's pretty sweet :)

if only zippo lighters weren't that expensive in my area, I would've done this already

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post #3 of 19
11/30/10 at 2:38pm

Yes, I've seen your pics before. Awesome!

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post #4 of 19
11/30/10 at 4:32pm

Very cool idea.  Kudos.

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post #5 of 19
11/30/10 at 9:33pm

so awesome

popcorn.gif

 

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post #6 of 19
11/30/10 at 9:42pm

That's very cool. Makes me want to try building one

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post #7 of 19
12/1/10 at 12:45pm

Very cool :-)

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post #8 of 19
12/1/10 at 1:33pm

Lovely :) Compact and well executed.

 

Short question though: if someone connects it with an usb cable and an audio cable to a computer, won't both the virtual ground (through the audio cable) and the V- rail (through the USB cable) be connected to the computer ground ?

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post #9 of 19
12/1/10 at 5:08pm


The input ground/USB ground are connected together.

The virtual ground only needs to be isolated at the output.

Quote:
Originally Posted by 00940 View Post

Lovely :) Compact and well executed.

 

Short question though: if someone connects it with an usb cable and an audio cable to a computer, won't both the virtual ground (through the audio cable) and the V- rail (through the USB cable) be connected to the computer ground ?

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post #10 of 19
12/1/10 at 5:49pm

Oops, right, I didn't took into account the input coupling caps. Still, with such similar looking jacks for input and output, I can't but think that the output will get shorted to ground at some point...

 

edit: looking at the traces on the pcb though, both the output and input grounds are connected to the virtual ground. So my earlier comments hold.


Edited by 00940 - 12/1/10 at 5:56pm
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post #11 of 19
12/1/10 at 5:56pm

If the I/O get reversed, the TLE2426 will just shut down.

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post #12 of 19
12/1/10 at 6:07pm

You're right!

 

When you look at the layout, the input ground and output ground both go back to the TLE.

The - power should be the same as USB ground. Unless the USB - power wire is isolated

from ground in the computer...hummm

 

Quote:
Originally Posted by 00940 View Post

Lovely :) Compact and well executed.

 

Short question though: if someone connects it with an usb cable and an audio cable to a computer, won't both the virtual ground (through the audio cable) and the V- rail (through the USB cable) be connected to the computer ground ?

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post #13 of 19
12/2/10 at 12:01pm
Thread Starter 

LOL. I had never tried to take audio and power from the same pc. I usually take power from my pc but audio comes from my iPod.

So I tried to take both from the same pc and guess what - only humm and some crackle :D

Any ideas on what to do to make it work when power and audio source is one, but also work when they're not one?


Edited by Reintz - 12/7/10 at 12:49pm
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post #14 of 19
12/5/10 at 9:57pm

Hi OP, been thinking of making a cmoy in something like this, do you know if all zippo lighters are the same size? also, can this run only on usb power? im gueessing you're using an ipod Line out? thanks

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post #15 of 19
12/5/10 at 10:00pm

forgot to ask, how do you adjust volume? ipod line out wont allow change from the ipod itself right?

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