I am creating a custom little Circuit Board to feed 2 cameras, will this work? - Hotwire! Hardware Mods, Accessories and Insights - CHDK Forum
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I am creating a custom little Circuit Board to feed 2 cameras, will this work?

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Offline Damageinc333

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I am creating a custom little Circuit Board to feed 2 cameras, will this work?
« on: 23 / April / 2010, 00:51:31 »
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I am creating a little PCB to take the lead from my Ricoh CA-1 and send it to 2 cameras.  I am basically making a USB 'y-splitter' (connecting pin1,2,3,4 coming off the remote to pin1 of USBOUTA & USBOUTB which will go to camera L&R respectively.  

Can anyone confirm that this will this work?  Or will I run in to voltage drop due to the small battery in the Ricoh feeding 2 cameras?  

Here are a few images some images of my project. I hope to etch this weekend.  I did disassemble the Ricoh and found that only VCC and Ground are used.  This is consistent with what I have read in the CHDK wiki and elseware.  However I decided to still route D- and D+ on my board just in case it could ever be used for something else down the line.




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Offline seuros

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Re: I am creating a custom little Circuit Board to feed 2 cameras, will this work?
« Reply #1 on: 23 / April / 2010, 14:37:59 »
Do you have a schema ?
It not easy to understand what you want to do if you provide only the pcb.
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Offline Microfunguy

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Re: I am creating a custom little Circuit Board to feed 2 cameras, will this work?
« Reply #2 on: 23 / April / 2010, 15:17:31 »
Quote from: Damageinc333 on 23 / April / 2010, 00:51:31
Can anyone confirm that this will this work?

Did you know that you can buy double-decker USB receptacles ?  

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Or will I run in to voltage drop due to the small battery in the Ricoh feeding 2 cameras?
 

It will easily drive thirty cameras, the USB connector input resistance is tens of Kohms.

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However I decided to still route D- and D+ on my board.

You cannot do that.
It is like trying to make the cameras talk to each other.

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Offline seuros

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Re: I am creating a custom little Circuit Board to feed 2 cameras, will this work?
« Reply #3 on: 23 / April / 2010, 15:23:30 »
Connecting the d- and d+ can damage the cameras
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Offline Damageinc333

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Re: I am creating a custom little Circuit Board to feed 2 cameras, will this work?
« Reply #4 on: 23 / April / 2010, 17:46:44 »
First off Thanks much Microfunguy and seuros for your quick replys.

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Did you know that you can buy double-decker USB receptacles ? 
Yep,  I have a few around here, however it is not gong to work for the case I have.


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Connecting the d- and d+ can damage the cameras
Ouch!,  Thanks for the heads up.  This will certainly make things a lot easier.  I am glad I haven't etched yet.


Thanks again!
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Offline seuros

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Re: I am creating a custom little Circuit Board to feed 2 cameras, will this work?
« Reply #5 on: 23 / April / 2010, 19:42:01 »
You should think in changing your design .
I can give you a better design (pcb)
if you give what are your requirement
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