433 Reply by Timbob

(97 replies, posted in Other Hardware)

DogTag wrote:
Timbob wrote:

Well, spend all day working on a schematic.
With a tl072 won't work. 10k resistors gives you a really low volume, almost can't hear it.
And diodes won't work as well, which is strange, and I can't figure out why. Maybe my plugs are just crap.

What's the average maximum voltage of a line-out on a Game Boy? That schematic is designed for 1V input signals. Maybe if the iput voltage is wrong, then the whole circuit is not working as it should.

Self response:
Line-Out-------------Vpp--------------Amplitude
Pro sound -----------1V------------------0.5V
Stock-----------------0.2V----------------0.1V

So the problem might be the resistors value.

Yeah, 10k might be a bit too much. smile
Changed it to 680 ohm, seems to work better. Loud enough for headphones.

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434 Reply by Timbob

(97 replies, posted in Other Hardware)


WIP.
Well, it's something tongue
I'm now using 1K resistors. Sound is still quite soft, so I might switch to 680Ohms.
To top one still needs to be connected, I want to do a mono / stereo switch on that one.

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435 Reply by Timbob

(97 replies, posted in Other Hardware)

onapokoya wrote:
Timbob wrote:

Might just put together something with 1k resistors and call it a day.

Why don't you build that little mint tin mixer that Alley Beach built?  Looks like it will do the job just find.

Yeah, that's basically what I'm throwing together now tongue

I was probably thinking way to complicated.
Still, a small simple kit would be nice.
Maybe one you can build in to a gameboy, using its power, making it an active mixer that gives you an extra line-in on your gameboy.

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436 Reply by Timbob

(97 replies, posted in Other Hardware)

onapokoya wrote:
Timbob wrote:

Well, spend all day working on a schematic.

I don't know anything about designing electronics.  I can build things all day if I had a schematic but I can't design the schematic.  If someone designs it, I'd be down to assemble them for people.

I meant build... I think.
I tried to build that schematic that I posted in the OP. with the TL072 op-amp etc.
Didn't work.
Tried with just 10k resistors, without the op-amp. Sound was just really really soft.
Tried with diodes instead of resistors as Moosehead posted before, but no result.

Might just put together something with 1k resistors and call it a day.

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437 Reply by Timbob

(97 replies, posted in Other Hardware)

Well, spend all day working on a schematic.
With a tl072 won't work. 10k resistors gives you a really low volume, almost can't hear it.
And diodes won't work as well, which is strange, and I can't figure out why. Maybe my plugs are just crap.

Go to forum: Other Hardware

438 Reply by Timbob

(97 replies, posted in Other Hardware)

DogTag wrote:

Maybe too simple and basic, but what about:
?

That's what I use for "on the road" 2xLSDJ.

Edit: Wrong image.

That should work, but it might damage your gameboy, since you basically also put an input on the output of your gameboy.

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439 Reply by Timbob

(97 replies, posted in Other Hardware)

ShintarouMusic wrote:
SketchMan3 wrote:

You know, it'd be kind of cool if somebody could mod an audio input jack to a DMG so you could hook your second DMG into it and get the sound of both through the main DMG's headphones jack/speaker.

oooh, this would be brilliant!

Those mixer schematics are quite simple, so it should totally be doable...
Even a small passive mixer, when taking power from the gameboy.

Not a bad idea actually..

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440 Reply by Timbob

(97 replies, posted in Other Hardware)

bitjacker wrote:

why not get a tascam guitar trainer, headphone splitter and a mono (male) guitar to stereo HEADPHONE (FEMALE) adapter? you would loose stereo but who cares you have a load of effects to play with.

Because I'm poor tongue
I want to go getto on this one, since I probably have all the parts for a small passive mixer anyway.

Thanks for all the tips! I'll try to put something together later today. Will keep you all posted smile

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441 Reply by Timbob

(97 replies, posted in Other Hardware)

Saskrotch wrote:

Yeah, there's no way I'm going to be taking this to a show. I've been thinking of building a mixer with my friend CCDM, if we get to it I'll try to put whatever I can in here to help.

Cool.
I still want a small portable active mixer tho, for shows or whatever. But for now I just want something simple to just mix 2 signals on my headphone smile

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442 Reply by Timbob

(97 replies, posted in Other Hardware)

Haha, yeah, mine is a really cool mixer from the 70's. even has a build in tape-echo. Which is awesome. But the thing weighs a ton...

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443 Topic by Timbob

(97 replies, posted in Other Hardware)

Hi there.

I've been doing a lot of writing on 2xlsdj lately, and the thing that's always bothering me is the need of a mixer to hear both at the same time. Now I do have a mixer.. But it's huge and it needs a lot of wires etc. so I want to build a small passive mixer, just to combine the two outputs for my headphones.

It doesn't have to be the best audio quality, I just want to hear the two together where ever I might be sitting. Quite useful for on the train etc. when I need to finish the track I'll hook it up to my bigger mixer for fine tuning etc.

Anyway, i found this page:
http://sound.westhost.com/articles/audio-mixing.htm#s2


Which gives me a lot of info. The basic idea is just fine for me...

Would this work on 2 gameboys? I can't really make up from the text if this is for line level mixing, or headphone. Or doesn't that really matter?

I've got some TL072 left from another build, so I can make a stereo mixer, just wanted to see if anyone has some tips, tried this before, etc. smile

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444 Reply by Timbob

(24 replies, posted in General Discussion)

Someone plz change topic title to quake 3 server...

jk.

No seriously.

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445 Reply by Timbob

(97 replies, posted in General Discussion)

calmdownkidder wrote:

"A genre of music, consisting of 8-bit tunes, e.g. Super Mario and old Final Fantasy music, remixed with dubstep to create a hybrid genre of music."

A wizard just dropped the bass.

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446 Reply by Timbob

(48 replies, posted in Nintendo Handhelds)

sweet.
I lost my job recently, so now I've got all the time in the world wink

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447 Reply by Timbob

(48 replies, posted in Nintendo Handhelds)

So, how would one start in making custom fonts?
sounds like a fun hobby.

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448 Reply by Timbob

(12 replies, posted in Nintendo Handhelds)

Apeshit wrote:
SketchMan3 wrote:

This is a bit off-topic, but how do you guys do the "watermark" in the screen? Does that show through when you've got a game running, or is that a "game" itself?

Yeah, it's a rom. I should specify that because people have been thinking we watermark our backlights with a huge ape logo.

That one was sent to me by a fellow on this forum, I don't recall him name off the top of my head. He hacked an existing rom. The newer ones I use I've made from scratch, there's some guides on how to make them around.

That was me wink
And the one I did for you started as a hacked rom, but ended as a completely new one build from scratch.

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