Modular phone

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A number of manufacturers produce modular components suitable for embedded systems. Some of these components are suitable for a hobbyist to put together a modular phone. This page is intended as a starting-point for building an OpenMoko compatible phone.
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{{Hardware Wishlist}}
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A number of manufacturers produce modular components designed for embedded systems. Some of these components are suitable for a hobbyist to put together a modular phone. This page is intended as a starting-point for building an Openmoko compatible phone.
  
 
The major problem with this approach is that the resultant phone tends to be larger than a normal phone.
 
The major problem with this approach is that the resultant phone tends to be larger than a normal phone.
  
 
This is because though they may be designed to be compact, internal connectors add lots of volume compared to a PCB, where everything can be in one unit.
 
This is because though they may be designed to be compact, internal connectors add lots of volume compared to a PCB, where everything can be in one unit.
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This is more than likely true. Gumstix produce 3D models in Sketchup format, of all their components - I will produce a 3D mockup using the components listed below, upload it here and make a size comparison.
 
  
 
==Component Suppliers==
 
==Component Suppliers==
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*[http://www.jandrew-elec.com/acatalog/Siemens_GSM_GPRS_EDGE_Modules.html GSM/HDSPA/UMTS modules]
 
*[http://www.jandrew-elec.com/acatalog/Siemens_GSM_GPRS_EDGE_Modules.html GSM/HDSPA/UMTS modules]
  
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==Possible configuration 1==
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==Possible configuration 1, based upon modules from gumstix.com==
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* Gumstix verdex (600MHz Intel Xscale PXA270, 128MB RAM, 64MB flash) - $170USD.
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{| border=1
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* Goliath-GPS-vx GSM/GPRS/EDGE/LCD touchscreen/audio/3D accelerometer module - $100.
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! Component !! Provides !! Link !! Cost (USD) !! Weight (g)
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** This seems very unlikely. It is almost certainly below cost, based on prices of included components $150-$200 is around the minimum.
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|-
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* microSD breakout board.
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|Gumstix Verdex XL6P || Processor, motherboard, RAM, 64MB flash || gumstix.com || 169 || 8
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*[http://www.sparkfun.com/commerce/product_info.php?products_id=544] - $15USD.
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|-
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* 480 x 272px LCD [http://www.sparkfun.com/commerce/product_info.php?products_id=8335] - $70USD.
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|Siemens XT75 || GSM, GPRS, EDGE, GPS || jandrew-elec.com || 150 || 10
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* Battery, holder, charger circuitry - $20USD
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|-
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* Case - $40USD.
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|USB WiFi dongle || WiFi ||  || 15 || ?
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* Speakers, mic - $10USD.
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|-
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* Buttons - $5USD.
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|microSD breakout board || microSD connector || [http://www.sparkfun.com/commerce/product_info.php?products_id=544] || 15 || 5
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* USB WiFi dongle (also, forthcoming gumstix modules will add wifi to the verdex mobo range) - $20.
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|-
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| Dell Axim x50v Screen || 480 x 640px LCD || ebay.com, various sources || ~50 || 50
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|-
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|LCD controller || xx || ? || ? || ?
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|-
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|Nokia BL-6C || 1070mAh battery  || ebay.com || 5 || 15g [http://www.cellpower.com/battery.cfm/Model/6016i,%206015i/PartNumber/N60-11Lo.html]
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|-
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|Case || 12*7*.2cm(back)+26*2.5*.2cm(edge) +3.5*12*.2 =37cc || rapidobject.com (based on recommended minimum thickness) || 98 || 75-90
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|-
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|Speakers || .2W per channel of stereo sound || [http://rocky.digikey.com/scripts/ProductInfo.dll?Site=US&V=10&M=EAS-2P113D] || 5 || 16
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|-
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|Microphone || Microphone and mic amp || [http://www.digikey.com/scripts/DkSearch/dksus.dll?Detail?name=P9925-ND] || 5 || 1
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|-
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|Audio amplifier || xx || xx || 10 || ?
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|-
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|Total || xx || xx || 520 || 180
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|-
  
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The prices for the Goliath daughter cards are realeased on monday 16th July 2007, and should be around $100USD, giving a total of around $450+, which compares with the Neo1973 at $450.
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|}
  
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Prices will be reduced, if we as the OpenMoko community buy in bulk.
+
Prices will be reduced, if we as the Openmoko community buy in bulk.
  
 
Capabilities wise, this compares well with the Neo - there is no accelerated graphics and the screen resolution is smaller, but it does have EDGE and a faster processor. Otherwise specs are similar.
 
Capabilities wise, this compares well with the Neo - there is no accelerated graphics and the screen resolution is smaller, but it does have EDGE and a faster processor. Otherwise specs are similar.
  
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It is much larger and heavier.
+
From Sketchup models supplied by Gumstix, the size will be around 120 x 67 x 20mm. This is the smallest cuboid into which the main components (motherboard, WiFi, Goliath, screen) will fit. The case will add approx. 2mm to this - battery, microSD and other components should fit into voids between the main circuit boards.
  
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Where relevant, all components listed here have Linux kernel modules supplied by their manufacturer.
+
Weight information will be included here as soon as the specs are released by Gumstix.
 +
 
 +
Where relevant, all components listed have Linux kernel modules supplied by their manufacturer.
  
 
==Other resources==
 
==Other resources==
 
[http://hbmobile.org Home Brew Mobile Phone Club] have a site devoted to build-it-yourself mobile phones, based upon Gumstix motherboards. They have schematics, case designs and details of suitable components from many sources.
 
[http://hbmobile.org Home Brew Mobile Phone Club] have a site devoted to build-it-yourself mobile phones, based upon Gumstix motherboards. They have schematics, case designs and details of suitable components from many sources.
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[[Category:Categories]]
 

Latest revision as of 00:29, 31 August 2008

Hardware wishes warning! This article or section documents a Hardware Wish List item, the features described here may or may not be implemented in future devices.

A number of manufacturers produce modular components designed for embedded systems. Some of these components are suitable for a hobbyist to put together a modular phone. This page is intended as a starting-point for building an Openmoko compatible phone.

The major problem with this approach is that the resultant phone tends to be larger than a normal phone.

This is because though they may be designed to be compact, internal connectors add lots of volume compared to a PCB, where everything can be in one unit.

[edit] Component Suppliers

[edit] Possible configuration 1, based upon modules from gumstix.com

Component Provides Link Cost (USD) Weight (g)
Gumstix Verdex XL6P Processor, motherboard, RAM, 64MB flash gumstix.com 169 8
Siemens XT75 GSM, GPRS, EDGE, GPS jandrew-elec.com 150 10
USB WiFi dongle WiFi 15  ?
microSD breakout board microSD connector [1] 15 5
Dell Axim x50v Screen 480 x 640px LCD ebay.com, various sources ~50 50
LCD controller xx  ?  ?  ?
Nokia BL-6C 1070mAh battery ebay.com 5 15g [2]
Case 12*7*.2cm(back)+26*2.5*.2cm(edge) +3.5*12*.2 =37cc rapidobject.com (based on recommended minimum thickness) 98 75-90
Speakers .2W per channel of stereo sound [3] 5 16
Microphone Microphone and mic amp [4] 5 1
Audio amplifier xx xx 10  ?
Total xx xx 520 180

Prices will be reduced, if we as the Openmoko community buy in bulk.

Capabilities wise, this compares well with the Neo - there is no accelerated graphics and the screen resolution is smaller, but it does have EDGE and a faster processor. Otherwise specs are similar.

From Sketchup models supplied by Gumstix, the size will be around 120 x 67 x 20mm. This is the smallest cuboid into which the main components (motherboard, WiFi, Goliath, screen) will fit. The case will add approx. 2mm to this - battery, microSD and other components should fit into voids between the main circuit boards.

Weight information will be included here as soon as the specs are released by Gumstix.

Where relevant, all components listed have Linux kernel modules supplied by their manufacturer.

[edit] Other resources

Home Brew Mobile Phone Club have a site devoted to build-it-yourself mobile phones, based upon Gumstix motherboards. They have schematics, case designs and details of suitable components from many sources.

Retrieved from "http://wiki.openmoko.org/index.php?title=Modular_phone&oldid=50793"
Personal tools

A number of manufacturers produce modular components suitable for embedded systems. Some of these components are suitable for a hobbyist to put together a modular phone. This page is intended as a starting-point for building an OpenMoko compatible phone.

The major problem with this approach is that the resultant phone tends to be larger than a normal phone.

This is because though they may be designed to be compact, internal connectors add lots of volume compared to a PCB, where everything can be in one unit.

This is more than likely true. Gumstix produce 3D models in Sketchup format, of all their components - I will produce a 3D mockup using the components listed below, upload it here and make a size comparison.

Component Suppliers

Possible configuration 1

  • Gumstix verdex (600MHz Intel Xscale PXA270, 128MB RAM, 64MB flash) - $170USD.
  • Goliath-GPS-vx GSM/GPRS/EDGE/LCD touchscreen/audio/3D accelerometer module - $100.
    • This seems very unlikely. It is almost certainly below cost, based on prices of included components $150-$200 is around the minimum.
  • microSD breakout board.
  • [1] - $15USD.
  • 480 x 272px LCD [2] - $70USD.
  • Battery, holder, charger circuitry - $20USD
  • Case - $40USD.
  • Speakers, mic - $10USD.
  • Buttons - $5USD.
  • USB WiFi dongle (also, forthcoming gumstix modules will add wifi to the verdex mobo range) - $20.

The prices for the Goliath daughter cards are realeased on monday 16th July 2007, and should be around $100USD, giving a total of around $450+, which compares with the Neo1973 at $450.

Prices will be reduced, if we as the OpenMoko community buy in bulk.

Capabilities wise, this compares well with the Neo - there is no accelerated graphics and the screen resolution is smaller, but it does have EDGE and a faster processor. Otherwise specs are similar.

It is much larger and heavier.

Where relevant, all components listed here have Linux kernel modules supplied by their manufacturer.

Other resources

Home Brew Mobile Phone Club have a site devoted to build-it-yourself mobile phones, based upon Gumstix motherboards. They have schematics, case designs and details of suitable components from many sources.