Mmc Mod - Proposed Hardware

[guylhem]

Hello

As promised, here is a first attempt at a design of a MMC reader. It is a) untested and  not even proofread. But at least the project lives on :-)

You can see it on http://externe.net/zaurus/simpad-bluetooth the original bluetooth addon page since it's going to use spare GPIOs unused by the bluetooth mod.

This should make it quite easy to do : you just do your soldering and stuff outside the simpad, and once you are done, with a Torx 6 screwdriver simply open the simpad, connect your bluetooth + MMC module to the main board using the flat cable, and voila - you gain both bluetooth and storage space.

Ideally, someone could create several and sell them - the whole thing is GPL.

If it's working, I'll put a 1 Gb SD card in the simpad, which along with the bluetooth module shouldn't be too power hungry (better than a microdrive) while leaving the PCMCIA slot available for anything else (say Wifi...). If this works out, you can certainly expect a Guylhem distribution for the simpad soon :-)

Next is implementation then a GSM module.

Comments/help welcome by email (my log it@gmail.com).

Guylhem

[Tom61]

The url should be wrapped with [url] tags, not normal HTML. Also, the URL comes up 404, and I couldn't figure out what page you're refering to when reading the other bluetooth/serial threads.

[guylhem]

hardware implemented.
now working on the mmc driver

Guylhem

[miip]

Your link is still dead.

[Tom61]

Managed to find it, he transposed simpad and bluetooth.
http://externe.net/zaurus/simpad-bluetooth/

[niv]

Thanks for sharing,
I would have never gone in to it from scrach.

I found it hard to come by the Mitsumi WML AHR C09. and the modules that replaced it - where far too expensive (60 euro+), so I was happy to see albertr design which uses a15$ dongle.
I am VERY interested in putting a 1Gb card in.
cant find the link to a post suggesting usb readers at amazon that may be used.

I am still tring to Jtag may simpad back to life. got the connector in place, but no VCC at pin2 and pin 4.

[geron]

I am still tring to Jtag may simpad back to life. got the connector in place, but no VCC at pin2 and pin 4.

Did you put the jumper on J10 to keep power on?

[niv]

Thanks a milion geron,
I didnt shorten J10 because it didnt say so:

First you have to remove the solder in the holes for J10 and J12. Some holes of J12 are difficult to unsolder because they are connected to ground and dissipate the heat. One iron on each side helps. Then you insert the jumper connectors J12 and J10 and solder them.

As an alternative you can also use some thin wires to make a connection between J12 and the JTAG cable, so you do not need remove the solder and insert the connectors.

Then you insert the jumper connector J12 and J10 and solder them.

I need to edit wiki

[geron]

I need to edit wiki

No, you don't. Just read further on:

Flash Procedure:

Connect the SIMpad to the power supply. You don't need to put the main board back into the housing and connect all internal cables. Put a jumper on J10 to keep power on. Plug the JTAG cable to the PC and to the SIMpad.

Never mind.  

[niv]

OK - I feel like a moran.
thanks a lot for the advise
will bring my simpad back soon.

Niv

[guylhem]

Hello

The driver is *not* reqdy yet. I've no good experience with GPIO handling or SPI. It may take a while.

[niv]

Found this source for a GSM cellular unit:
Spark Fun
lots of cellular accesories, but the unit itself is 120$
not too bad for SMS, and data, anywhere..