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> Question Abt. Japanese Page Re Bluetooth Mod
post Mar 14 2007, 12:32 AM
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Hi huys.

I'm considering to upgrade my Zauri with USB Bluetooth modules.
Since I want to keep the hardware compatible with standard kernels and don't want to do too many modifications to the hardware, I'm looking into the simple solution:
Take a normal USB BT module, connect it 1:1 to the USB port with a power switch, which will probably be blocking the USB port when BT is used. This limitation is okay with me.

I think this method is described here:

But since I cannot read any Japanese, would anyone able to read that please let me know how the switch must be connected?
From the pics it seems the switch only switches one line. But which one?
Is it really enough to switch only one line (probably one of the power lines)?
When the data lines are still co nnected to the BT module, can other USB devices which are attached in a normal way to the USB port still work without a problem?

Once I know all this, I will begin with the surgery and take some better pictures to put them onlilne.
I think this is a great way of enhancing the functionality of a Zaurus!

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post Mar 19 2007, 01:29 AM
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From: Brisbane, Australia
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You don't need opto components at all; they are used for proper circuit isolation when all you need here are simple switches. I would have recommended a bus switch but I believe they would only be suitable for switching the data lines and not the power ones.

If you personally don't see any interference with other USB devices when you're only switching ID and GND, why bother switching every line?
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