Stuffing Serial Bluetooth Module Inside C1k Casing, share your success stories ... Options

[albertr]

Correction: there're 17 soldering pads on the back of the module (not 6).
P.S. I'll post some pictures of it later tonight, have to run to "zharit' shashlik'" now
-albertr

[2x4ever]

zharit' shashlik - is great All other things can wait.

[albertr]

Here's the pics of DELL Truemobile 350 module compared to CF type I memory card:

http://www.iral.com/~albertr/billionton/dell350front.jpg
http://www.iral.com/~albertr/billionton/dell350back.jpg

Here's a picture of internal guts from FCC database: https://gullfoss2.fcc.gov/prod/oet/forms/bl...tive_or_pdf=pdf

-albertr

[Da_Blitz]

Cant wait to see this working so i can do it myself

[2x4ever]

I've contacted with an official Dell distributor in Russia and they will tell me about availability of this module tomorrow.

Cant wait to see this working so i can do it myself

Don't wait, try to help us

[mikekostousov]

I've contacted with an official Dell distributor in Russia and they will tell me about availability of this module tomorrow.

While you are waiting answer from Dell can you tell me it is possible to use LED wires for control bluetooth power? I think, it is one of abilities. For example, we can use mail LED as Bluetooth LED and bluetooth power control.

[2x4ever]

I've contacted with an official Dell distributor in Russia and they will tell me about availability of this module tomorrow.

While you are waiting answer from Dell can you tell me it is possible to use LED wires for control bluetooth power? I think, it is one of abilities. For example, we can use mail LED as Bluetooth LED and bluetooth power control.

Yes we can. But what if you want to leave this LED for mail notification?

[mikekostousov]

I've contacted with an official Dell distributor in Russia and they will tell me about availability of this module tomorrow.

While you are waiting answer from Dell can you tell me it is possible to use LED wires for control bluetooth power? I think, it is one of abilities. For example, we can use mail LED as Bluetooth LED and bluetooth power control.

Yes we can. But what if you want to leave this LED for mail notification?

I just want to foget it
By the way, we can try to combine LEDs and power control.
How is LED control constructed? Perhaps, we can use somthing like one-wire control? I'm trying to find one-wire switcher or trigger to combine some functions.

[mikekostousov]

For example:
http://www.maxim-ic.com/quick_view2.cfm/qv_pk/3818/ln/


But, I hope that Zaurus LED control has a bit more abilities than it uses.

[speculatrix]

By the way, we can try to combine LEDs and power control.
How is LED control constructed? Perhaps, we can use somthing like one-wire control? I'm trying to find one-wire switcher or trigger to combine some functions.

Sudden inspirational thought:

Why not just control the bluetooth module with the charging LED without fancy switching?!

1) if Z is being charged, the BT module is turned on. But since you're on charge, you don't care about the extra current drain! Unless of course you're using an external battery pack/charger which very few people do.

2) if the Z isn't plugged into a charger, then you know the BT module is on when LED is on, as it wouldn't be on otherwise.

Am I going mad or is this a good idea?

[2x4ever]

For example:
http://www.maxim-ic.com/quick_view2.cfm/qv_pk/3818/ln/


But, I hope that Zaurus LED control has a bit more abilities than it uses.

It's just a GPIO pin soldered to LED throught a PNP transistor. An one JK flip-flop is more than enougth to control the LED and the module separately

Am I going mad or is this a good idea?

This is a good idea.

[albertr]

Sudden inspirational thought:

Why not just control the bluetooth module with the charging LED without fancy switching?!

1) if Z is being charged, the BT module is turned on. But since you're on charge, you don't care about the extra current drain! Unless of course you're using an external battery pack/charger which very few people do.

2) if the Z isn't plugged into a charger, then you know the BT module is on when LED is on, as it wouldn't be on otherwise.

Am I going mad or is this a good idea?

What if you use bt to open an rfcomm connection to your phone to get online while on the road?
-albertr

[albertr]

If BCSP protorol is used, then I don't believe that power drain should be an issue. If serial driver would send break signal when port is closed, then BC will enter deep sleep mode where power drain is almost nil.
-albertr

[2x4ever]

If BCSP protorol is used, then I don't believe that power drain should be an issue. If serial driver would send break signal when port is closed, then BC will enter deep sleep mode where power drain is almost nil.
-albertr

But what if want to use your serial port for another things while BT is switched off?

I think we could mix speculatrix and mikekostousov solutions:
We can solder a JK flip-flop to the charge LED. To turn bluetooth on we just blink the LED one time. To switch BT off we must blink the LED once again. Then we must hook any access to the LED in kernel. So if any application is want to just blink the LED without turnin BT on we hook this and switching the LED twice very quick so it will not visible to user and BT does not switching on.

[albertr]

Umm, I wasn't thinking about using the same serial port for both bluetooth and serial connections. How that could be done?

I believe that charging LED control is only used in the kernel code. I might be wrong, but it doesn't look like this LED is used in QT/Qtopia. If so, it shouldn't be hard to modify this code to blink twice or whatever.
-albertr