Talk:Modular phone

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i may have made a mistake when modelling the PCB stack. i realise now it is unclear as too how close the components are to each other when assembled. this may need to be revisited [[User:Myfanwy|myfanwy]] 01:09, 17 July 2007 (CEST)
 
i may have made a mistake when modelling the PCB stack. i realise now it is unclear as too how close the components are to each other when assembled. this may need to be revisited [[User:Myfanwy|myfanwy]] 01:09, 17 July 2007 (CEST)
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== goliath gps/gsm module price ==
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bugger
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[[User:Myfanwy|myfanwy]] 02:14, 17 July 2007 (CEST)

Revision as of 02:14, 17 July 2007

Contents

intel xscale open?

i remember mickey saying on that linuxtag presentation that xscale is no option as there are a lot of NDAs and no way to get open documentation for the xscale processors...?! --Minime 15:59, 13 July 2007 (CEST)

In the gumstix case, this may be irrelevant, as they provide suitable drivers. --Speedevil 16:25, 13 July 2007 (CEST)

gsm included with gprs/gps

i've removed the line/link aobut having to buy an extra gsm module, as this is included with the samsung gprs chip. myfanwy 03:10, 16 July 2007 (CEST)

density of rapidobject polymer material

does anyone have an idea for the density of the polymer rapidobject (or any stereolithography company) uses? i would guess around 900-1,500kg/m^3 - the density of HDPE?

this will produce weight around 30-55g for the case?

PCB connections

The gumstix boards are designed to stack in one direction - perhaps a ribbon connector can be designed to allow them to be connected in a different orientation, possible making more efficient use of available space. --User:myfanwy

In small quantities - this will be over $50 or so, including attachment of connectors. Custom flex PCBs are expensive. However, this would allow easy integration of buttons, mic, and speaker related electronics. It may not be possible due to bus capacitance requirements. --Speedevil 00:25, 17 July 2007 (CEST)

There are connectors avilable at gumstix for $6 for a pack of 3. I wouldn't know where to start looking for a film ribbon connector, but I'm sure it wouldn't be hugely expensive. The capacitance point is something I hadn't thought of though; we should be able to keep the length to around 30mm - I will look for info to indicate whether this is acceptable or not. myfanwy 01:00, 17 July 2007 (CEST)

There is talk on the gumstix docwiki of a jtag board connecting through the 60-pin hirose, I would assume this is via some sort of ribbon connector, which will be at least as long as we require to connect to another module. myfanwy 01:06, 17 July 2007 (CEST)

stacked modules thickness

i may have made a mistake when modelling the PCB stack. i realise now it is unclear as too how close the components are to each other when assembled. this may need to be revisited myfanwy 01:09, 17 July 2007 (CEST)

goliath gps/gsm module price

bugger myfanwy 02:14, 17 July 2007 (CEST)

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intel xscale open?

i remember mickey saying on that linuxtag presentation that xscale is no option as there are a lot of NDAs and no way to get open documentation for the xscale processors...?! --Minime 15:59, 13 July 2007 (CEST)

In the gumstix case, this may be irrelevant, as they provide suitable drivers. --Speedevil 16:25, 13 July 2007 (CEST)

gsm included with gprs/gps

i've removed the line/link aobut having to buy an extra gsm module, as this is included with the samsung gprs chip. myfanwy 03:10, 16 July 2007 (CEST)

density of rapidobject polymer material

does anyone have an idea for the density of the polymer rapidobject (or any stereolithography company) uses? i would guess around 900-1,500kg/m^3 - the density of HDPE?

this will produce weight around 30-55g for the case?

PCB connections

The gumstix boards are designed to stack in one direction - perhaps a ribbon connector can be designed to allow them to be connected in a different orientation, possible making more efficient use of available space. --User:myfanwy

In small quantities - this will be over $50 or so, including attachment of connectors. Custom flex PCBs are expensive. However, this would allow easy integration of buttons, mic, and speaker related electronics. It may not be possible due to bus capacitance requirements. --Speedevil 00:25, 17 July 2007 (CEST)

There are connectors avilable at gumstix for $6 for a pack of 3. I wouldn't know where to start looking for a film ribbon connector, but I'm sure it wouldn't be hugely expensive. The capacitance point is something I hadn't thought of though; we should be able to keep the length to around 30mm - I will look for info to indicate whether this is acceptable or not. myfanwy 01:00, 17 July 2007 (CEST)

There is talk on the gumstix docwiki of a jtag board connecting through the 60-pin hirose, I would assume this is via some sort of ribbon connector, which will be at least as long as we require to connect to another module. myfanwy 01:06, 17 July 2007 (CEST)

stacked modules thickness

i may have made a mistake when modelling the PCB stack. i realise now it is unclear as too how close the components are to each other when assembled. this may need to be revisited myfanwy 01:09, 17 July 2007 (CEST)