anybody has a battery powered xox

[analographi]

I d like to have my xoxbox battery powered... anybody did something like that?

[Amberwolf]

Dunno if anyone's done it yet, but it wouldn't be too difficult. The only catch is that it appears to eat some decent power, so you'd need largish batteries to get long life, or a variation on the Mintyboost or Joule Thief to scrounge all the power you can out of your batteries.

[analographi]

the problem I see is, that I'd need 12volts... right?

that would mean 8 aa bateries or so...

How would I turn 6 volts DC into 12? how does the original 303 do that?

[Amberwolf]

That's why I mentioned the MintyBoost/etc, as they change a lower voltage into a higher one. You'd need to figure out how to change the MB's idea from a 3V-to-5V converter into a 6V-to-12V converter (or whatever is needed).

If the x0x uses (as I suspect but have not confirmed) multiple internal voltage rails, then you would get better battery life by splitting that off right there at the battery converters, rather than creating a 12V supply from the battery and then reconverting that to other supplies.

[phono]

pretty sure there was someone who did this already, not sure who it was though, tried searching?

[analographi]

I did search, but didn't find anything.

I try to do it myself, but I don't understand how the powersupply of the xox works.

What I don't get is where the 12Volts come from?

[phono]

I did search, but didn't find anything.

I try to do it myself, but I don't understand how the powersupply of the xox works.

What I don't get is where the 12Volts come from?

the power supply takes care of that

[analographi]

I did search, but didn't find anything.

I try to do it myself, but I don't understand how the powersupply of the xox works.

What I don't get is where the 12Volts come from?

the power supply takes care of that

well, yes, I know that. but in detail. All I can see is the AC/DC conversion through the diodes resulting in some 24-28Volts DC. Then I can see that the LM7805 and 78L06 are generating the 5V and 6V from that. LM336Z and AN6562 are generating 5.33 Volts.

But where do the 12Volt DC come from?

[guest]

http://forums.ladyada.net/viewtopic.php?f=29&t=6147

im not sure there are details of how it works
a boost converter is the best way
two 9v batteries is the easiest

[katarakt]

The excellent way doing a battery with speaker mod is the way you can see here with 8x 1,5V batteries from accenter:
http://www.beepworld.de/members52/accenter/x0xb0x.htm

The good thing is the batteries are working much longer like the 9V battery mod! The bad thing is that the guy is not very helpful if you want to build this mod yourself

So if someone can do this as an official mod this would be excellent. This is my personal most wanted mod.

[analographi]

The good thing is the batteries are working much longer like the 9V battery mod! The bad thing is that the guy is not very helpful if you want to build this mod yourself

absolutely. I contacted him too. he wasn't very helpful. I bought a distortion board from him once. will definitly never want to have business with that guy again.

What I found out is that he actually uses a 5 to 12v DCDC converter. He powers the converter with the 5 volt from the power supply and feeds the lm7805 wit DC instead of AC.

more or less what he does.

[analographi]

The good thing is the batteries are working much longer like the 9V battery mod! The bad thing is that the guy is not very helpful if you want to build this mod yourself

absolutely. I contacted him too. he wasn't very helpful. I bought a distortion board from him once. will definitly never want to have business with that guy again.

What I found out is that he actually uses a 5 to 12v DCDC converter. He powers the converter with the 5 volt from the power supply and feeds the lm7805 wit DC instead of AC.

more or less what he does.

[katarakt]

Analographi, i figured something similar out too what you said. The complete thing should be relatively simple, for an electronic freek no problem i think with some modifications here and there.

[mixhard]

http://beam.to/midi303

under the xoxbox menu he shows his x0xb0x with battery compartments and built in speaker.

his accenter distortion sounds pretty good.

[katarakt]

same link as mine