Author Topic: Will this work? or be possible  (Read 3926 times)

Offline DubbleDutch

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Will this work? or be possible
« on: October 19, 2008, 12:47:44 PM »
Well i'm going to do an intern go!cam mod
but the only stupid thing about this is, you can't use usb after you've done that.
now will usb still work when i put a switch on the ground wire? or do i have to put a switch on all the connections?



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Offline Wiii

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Re: Will this work? or be possible
« Reply #1 on: October 19, 2008, 12:49:37 PM »
I thought about same thing.
Cus i wanna internal cam mod thou :)
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Offline DubbleDutch

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Re: Will this work? or be possible
« Reply #2 on: October 19, 2008, 02:41:13 PM »
well i want to know before i try xD



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Offline robin1989

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Re: Will this work? or be possible
« Reply #3 on: October 19, 2008, 03:51:49 PM »
i think if you put a switch on the positive or whatever that it is switchable

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Re: Will this work? or be possible
« Reply #4 on: October 19, 2008, 08:17:43 PM »
maybe i think you could not shore tho but the only way to find out is by trying

try droping it again
my retared friend fixed by droping it
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Offline GhoSt

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Re: Will this work? or be possible
« Reply #5 on: October 19, 2008, 08:32:16 PM »
Idk but whouldn't the other pins interfere even if the power surply / ground is switched?
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Offline gr8npwrfl

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Re: Will this work? or be possible
« Reply #6 on: October 19, 2008, 10:14:04 PM »
You need a double pole switch and you can leave the ground and power connected.

You have to switch the data - and the data +

Or you can use a miniature relay double pole double throw.

The internal PSP Data - and Data + would connect to the common side.
The USB connector would connect to the normally closed connections
and the camera would hook to the normally open connections.

When you apply power to the camera you would energize the relay
and the camera would be connected to the internal USB.

When you turn the camera off the USB connector data would connect
back to the PSP internal USB.

By using the relay you can use as small a switch as you want just to
supply power to turn the relay on and off.




Offline Cookie Monster

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Re: Will this work? or be possible
« Reply #7 on: October 20, 2008, 02:06:18 AM »
please could you draw a quick diagram like on mspaint or somthing :help:

thanks toad and indy for the sigglys

Offline DubbleDutch

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Re: Will this work? or be possible
« Reply #8 on: October 20, 2008, 03:10:07 AM »
so if i read this right

just 2 dip switches.
1 on the + and one on the - ?



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Offline Alien_X

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Re: Will this work? or be possible
« Reply #9 on: October 20, 2008, 03:19:01 AM »
so if i read this right

just 2 dip switches.
1 on the + and one on the - ?

Data + and data -

I think it would work fine with just one switching th ground.

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Offline DubbleDutch

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Re: Will this work? or be possible
« Reply #10 on: October 21, 2008, 07:54:09 AM »
can you tell me what wires that are ? and what points on the mobo :+



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Offline gr8npwrfl

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Re: Will this work? or be possible
« Reply #11 on: October 21, 2008, 09:57:48 PM »
ALl the specs for USB show and spec ONE load period. If you only break ground or power you would still have
two loads on the data - and the data +. This will increase the capacitive load and will make the usb
connection very unreliable. Power and ground can stay connected as they are static levels.

If you look at the top waveform (blue) you will see the square wave data that is being transmitted:
But the bottom waveform is the same square wave with an additional load being added to the circuit.



As the data rate increases the data high goes away before the data can even charge through the circuit
giving you read errors.

That is why you have to switch the data lines so they only see one load

But I have been doing some researching and we are thinking that even though the choto shot camera is hooked
up to the usb port, it is not true usb. I am checking for you but Jean over at pspdev.org has put forth the
theory that the camera is not hooked to the data - or data + lines. There is an additional single line
on the usb connector that is used for vendor id functions. I also think that Sony is using this additional
line as a high speed serial port.

If you can give me a day or two to check this out, I should have an answer for you. Then you would only need
a single double pole switch to change this single line to and from the camera (also the usb GPS )

This may be the reason that people are having problems moving the camera inside.

If we look at the mini usb connector we see 5 pins not 4



The pins are defined as:



The one marked X is vendor specific, that is the one we think is used for the ChotoShot Camera
If this turns out to be true then we will have to switch power and this line to the camera.

I will let you know.
« Last Edit: October 21, 2008, 10:35:59 PM by gr8npwrfl »


Offline DubbleDutch

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Re: Will this work? or be possible
« Reply #12 on: October 21, 2008, 10:55:35 PM »
thanks gr8nprfl :D

i'll wait just some days :)



To all of you crying about lag and kicks, remember… when Jesus died, took him 3 days to respawn. Now THAT is lag.

Offline Alien_X

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Re: Will this work? or be possible
« Reply #13 on: October 22, 2008, 01:47:27 AM »
The X one isn't interfaced at all..as far as I can tell.
Since if you flip the motherboard over, there are some nice pads to solder for the usb contacts, but mayber it is routed across the motherboard in the second layer.

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Offline gr8npwrfl

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Re: Will this work? or be possible
« Reply #14 on: October 22, 2008, 11:21:03 PM »
It is connected on an inner layer we are chasing down some software drivers in the firmware.

Can someone that has the choto shot camera trace out the wiring on it ?



Offline gr8npwrfl

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Re: Will this work? or be possible
« Reply #15 on: October 22, 2008, 11:21:10 PM »
It is connected on an inner layer we are chasing down some software drivers in the firmware.

Can someone that has the choto shot camera trace out the wiring on it ?

Some kinda glitch happened here I posted only once, got the message that someone else had posted while I was posting this
and I told it to go ahead and post just like I always do. It posted my message twice.

Was someone working on the board while I was posting ?
« Last Edit: October 22, 2008, 11:25:23 PM by gr8npwrfl »


Offline Cookie Monster

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Re: Will this work? or be possible
« Reply #16 on: December 18, 2008, 01:55:53 PM »
sorry to bump an old topic but i finally finished the mod with the two switches and theres no sound on the psp. although there is sound when i take a picture or anything else to do withthe camara. HELP

thanks toad and indy for the sigglys

Offline DubbleDutch

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Re: Will this work? or be possible
« Reply #17 on: December 18, 2008, 02:12:37 PM »
so there is sound, even when there isnt sound ?



To all of you crying about lag and kicks, remember… when Jesus died, took him 3 days to respawn. Now THAT is lag.

 

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