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> Build Your Own Linux Powered Pda
post Jun 5 2006, 08:00 PM
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I've had the idea about rolling my own Linux powered PDA for some time, but I've been busy with another project of mine. So, I haven't posted about this idea, but recently Da_Blitz posted:

the iMX3 is a custom PDA idea as the 2700G chip is VERY hard to get. dont want to hijack this thread anymore so if you want more info then contact me direct or make another post

Definately looking for some more info on that!

Here's some interesting ideas to get the thread started:

GumStix ( www.gumstix.com www.gumstix.org ): Very small, proprietary, stackable modules. Very hobbyist friendly, but current models are still based around the Intel PXA255.

Colibri Module : PXA270 with most of the needed chips built in, and connections for most of the rest, in a formfactor of a DDR SODIMM. Moderately hobbyist friendly, with boards only 119Euros for the 520MHz version, but with a fixed handling fee for Hardware of 100 EUR and shipping of 45 EUR. You'll want to order more than one to be price effective with this supplier.

CM-X270 Computer-On-Module: I stubbled on to this site last night. No idea about this supplier's ablity to handle hobbyists, or even the cost of the module. However, you can configure a pretty impressive COM on that page. Up to PXA270 520Mhz, 128MB of RAM, Intel 2700G with 8MB of its own RAM, audio codec, and 512 MB of NAND flash!

Take a look at the Google Ads when you do a search for 'Arm development board', as quite a few Ads hit the mark for what we would want, if they could be had cheap, and single unit quanties (which most aren't sad.gif ).
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post Jun 17 2006, 06:12 PM
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Member No.: 6,806

I think you miss the point on a flush connector, what i used to use was a flush connecter on my wifi cards and a female to female adaptor when i needed anything to be connected, this ment that things didnt get caught in the cases i pack everything in, works well

i was hoping to put the fingerprint reader on the board next to the keyboard and have the screen take up the whole face but i guess if we have room then the speakers would go on ethier side, however i agree the cammera facing the user should be on the screen but i belive tha the high quality camera should be an the board itself so you can twist the screen and make it into a normal looking camera (running linux with GIMP wink.gif)

also i wanted to have a small auxilary screen on the outside of the screen with 4 buttons to control things like music

as i use the thing in lanscape all the time it make sense for me to have it at the back, alse having it at the left means less room for the expansion connector unless i move that to the back (that may be a better way to do it for a docking station) but i guess a compermise is to put it in the corner and make it wide angle, best of both worlds

Jog dial is a must, 2 if i can fit themone on the back and one on the frount so when you have the case closed and in portriat mode you have the screen on the frount with the current song with controls to play/pause and a jog dial on ethier side for next/previos and volume up and down

LOL, 2A power consumption is crazy, i was talking about battery capacity, i am trying to fit in with a power budget of 200-300mAh, this chip seems very low power and by turning things off it makes it easier to achive, the microdrive will break that but its not an all the time so we save power that way

i think its safe to say we can drop the addin card in favor of the backpack/expansion connector

In reference to the laptop and blades i was thinking to have in total the Blades, the PDA and the laptop. the blades would be proof of concept to allow me to have a cheap way to check that all the iMX3 stuff works and allow for a very cheap dev platform, next would be the PDA which is the same as the blade except now i test with new hardware and finally the laptop would be the pda boaurd and an expansion card plus a hard drive in a laptop case

the blades would boot of the network onec every thing is done, i was thinking having a card that the CPU cards slot into (think motherboard and PCI) that has edge connectors with ethernet and serial so you can hot plug them, one advatage is if the jtag port is on that connector then i can use it as a programming interface

the boards bieng so small means i can get them built cheaply, the only problem is that for the minimum order i am looking at mabey 20 of them unless i go thregh a diffrent manufacturere for the prototype

might get a couple of pics up in the next week or so of what i am thinking of, both of the PCB and the case
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Posts in this topic
Tom61   Build Your Own Linux Powered Pda   Jun 5 2006, 08:00 PM
koen   QUOTE(Tom61 @ Jun 6 2006, 04:00 AM)I've h...   Jun 5 2006, 10:36 PM
Da_Blitz   I have 30+ links to every manufacturer of xscale b...   Jun 6 2006, 07:09 PM
danboid   Hot DAMN! 2700G, 128MB+ RAM, VGA out and h...   Jun 15 2006, 07:45 AM
Ragnorok   - Thanks for the link, koen. Nice feature set on ...   Jun 15 2006, 08:10 AM
zmiq2   The most problematic I think it's getting a ke...   Jun 15 2006, 09:03 AM
danboid   I'd definately want separate mic and headphone...   Jun 15 2006, 11:31 AM
Tom61   Getting a decent resolution(640x480 or greater) go...   Jun 15 2006, 02:30 PM
Ragnorok   - As it happens I have both a Psion 5 & a 5mx,...   Jun 15 2006, 03:14 PM
Da_Blitz   Ok i like this i am not getting the usual "i ...   Jun 16 2006, 02:01 AM
Tom61   "Ok i like this i am not getting the usual ...   Jun 16 2006, 02:17 PM
Snappy   This is getting pretty exciting ... My needs are...   Jun 16 2006, 04:07 AM
Ferret-Simpson   Hmm. . If I remember my XDA's correctly, doesn...   Jun 16 2006, 03:03 PM
Ferret-Simpson   Sod. Forgot my most important thought: The power. ...   Jun 16 2006, 03:16 PM
stampsm   count me in. i have been looking for a project to ...   Jun 16 2006, 10:51 PM
Da_Blitz   Looks good! If you go the CF/PCMCIA route, it...   Jun 16 2006, 11:55 PM
Da_Blitz   WOW thats long   Jun 16 2006, 11:59 PM
stampsm   if i was designing a pda here would be my basic de...   Jun 17 2006, 12:46 AM
stampsm   well LOL i see someone was also typing a long repl...   Jun 17 2006, 12:50 AM
stampsm   i would like to add that i like the idea of the fr...   Jun 17 2006, 01:04 AM
Ferret-Simpson   And good choice on your Zaurus! POODLE LUV...   Jun 17 2006, 02:12 AM
Ferret-Simpson   Forgetting things AGAIN: Dan, Why the HELL do you...   Jun 17 2006, 03:47 AM
Da_Blitz   Yeah a camera would be nice but i would put it on ...   Jun 17 2006, 04:55 AM
Ferret-Simpson   Never used IRC. I think sticking to Forum is bette...   Jun 17 2006, 05:44 AM
Da_Blitz   Ok got it dropping the pcmcia and making it a back...   Jun 17 2006, 06:13 AM
Ferret-Simpson   I actually think the rotating screen is important,...   Jun 17 2006, 07:29 AM
stampsm   try adding the docking connector like i was saying...   Jun 17 2006, 07:37 AM
stampsm   on that blacksmith point actually yes. i got a 95...   Jun 17 2006, 07:42 AM
Ferret-Simpson   Fancing making cases for the PocketPenguins? And ...   Jun 17 2006, 08:15 AM
Da_Blitz   I think you miss the point on a flush connector, w...   Jun 17 2006, 06:12 PM
stampsm   there is a cool electronic site called sparkfun i ...   Jun 17 2006, 06:32 PM
stampsm   here is a sd card holder unit http://www.sparkfun....   Jun 17 2006, 06:54 PM
Da_Blitz   Thanks for those links, i was going to sugest drop...   Jun 17 2006, 11:02 PM
stampsm   i was looking at the size of that trackball and it...   Jun 17 2006, 11:21 PM
stampsm   in the next week or so i can try working up a pros...   Jun 17 2006, 11:24 PM
stampsm   also iteam #6 on that ittcannon page link would ma...   Jun 17 2006, 11:27 PM
stampsm   the trackball has green, blue, orange, and, red le...   Jun 17 2006, 11:31 PM
Da_Blitz   I like your ideas alot, seems we have a couple of ...   Jun 17 2006, 11:40 PM
Da_Blitz   That reminds me how about wirless usb, there is a ...   Jun 17 2006, 11:43 PM
stampsm   QUOTE(Da_Blitz @ Jun 17 2006, 11:40 PM)I like...   Jun 17 2006, 11:46 PM
stampsm   i love freescale products. i think it might be coo...   Jun 18 2006, 12:02 AM
Da_Blitz   QUOTEcount me in. i have been looking for a projec...   Jun 18 2006, 02:05 AM
Da_Blitz   seems you have the same idea as i have, the reason...   Jun 18 2006, 02:17 AM
Da_Blitz   Quick price list CPU $30 RAM (256MB) $8...   Jun 18 2006, 03:00 AM
stampsm   [QUOTE(Da_Blitz @ Jun 18 2006, 03:00 AM)Quick...   Jun 18 2006, 08:16 AM
stampsm   i can work on getting a keyboard design figured ou...   Jun 18 2006, 08:20 AM
Ferret-Simpson   Ok. . . The i300 chip is designed as a central c...   Jun 18 2006, 01:03 PM
stampsm   found a vga lcd screen http://www.gethightech.com...   Jun 18 2006, 01:03 PM
stampsm   i just did a scale drawing of the c3000 keyboard l...   Jun 18 2006, 01:11 PM
Ferret-Simpson   Hey, good thinking! I never thought to use a r...   Jun 18 2006, 01:15 PM
Ferret-Simpson   Basic layout of CXXXX works, I think. . .   Jun 18 2006, 01:16 PM
stampsm   it seems like lcd modules are really hard to find ...   Jun 18 2006, 03:10 PM
stampsm   ebay to the rescue it's only 320x240, but.......   Jun 18 2006, 03:14 PM
Tom61   Before deciding on a microtrackball, be sure to tr...   Jun 18 2006, 04:19 PM
stampsm   QUOTE(Tom61 @ Jun 18 2006, 04:19 PM)Before de...   Jun 18 2006, 04:41 PM
stampsm   i was looking at memory and if we go for 128MB fou...   Jun 18 2006, 04:43 PM
Tom61   How about this kind of setup for a motherboard; Ha...   Jun 18 2006, 06:34 PM
stampsm   well if you are looking at making money from the b...   Jun 18 2006, 07:42 PM
stampsm   well it turns out that the i.mx31 supports "m...   Jun 18 2006, 08:46 PM
Da_Blitz   iMX3 supports 256MB over 4 chips (64MB per chip se...   Jun 18 2006, 10:19 PM
Da_Blitz   can you guys post any links to suppliers you can f...   Jun 18 2006, 10:20 PM
stampsm   i found a 640x480 3.7" lcd LS037V7DW01 datas...   Jun 18 2006, 10:24 PM
stampsm   QUOTE(stampsm @ Jun 18 2006, 10:24 PM)i found...   Jun 19 2006, 12:57 AM
stampsm   all the costs i wrote i think i got from arrownac....   Jun 18 2006, 10:28 PM
stampsm   that lcd also has an option of 320x240 mode by sen...   Jun 18 2006, 10:32 PM
stampsm   did i say how much i like ebay yet? this auction j...   Jun 19 2006, 12:16 AM
Da_Blitz   Nice, what terms do you use when you search, as i ...   Jun 19 2006, 03:34 AM
Da_Blitz   btw there is a reply on the prev. page, i tend to ...   Jun 19 2006, 03:51 AM
Ferret-Simpson   The 4" CGS screen is exactly what we're l...   Jun 19 2006, 05:15 AM
danboid   Trackball in the middle of the cursor keys? Nooooo...   Jun 19 2006, 06:30 AM
Ferret-Simpson   Umm. . . the 5600 is squareish, the Clamshells are...   Jun 19 2006, 09:00 AM
stampsm   on that trackball idea keeping it seperate like th...   Jun 19 2006, 11:59 AM
iignotus   Do we have any semblance of a schematic yet? With ...   Jun 19 2006, 12:25 PM
stampsm   QUOTE(iignotus @ Jun 19 2006, 12:25 PM)Do we ...   Jun 19 2006, 01:03 PM
iignotus   QUOTE(stampsm @ Jun 19 2006, 01:03 PM)QUOTE(i...   Jun 19 2006, 04:09 PM
stampsm   QUOTE(iignotus @ Jun 19 2006, 04:09 PM)QUOTE(...   Jun 19 2006, 04:56 PM
stampsm   one thing we have not much discused is the wifi ch...   Jun 19 2006, 01:01 PM
speculatrix   do you mind if I add a few comments to your geek-f...   Jun 19 2006, 02:08 PM
dhns   QUOTE(speculatrix @ Jun 19 2006, 11:08 PM)3) ...   Jun 20 2006, 03:44 AM
speculatrix   QUOTE(dhns @ Jun 20 2006, 12:44 PM)IMHO, you ...   Jun 20 2006, 04:00 AM
dhns   QUOTE(speculatrix @ Jun 20 2006, 01:00 PM)The...   Jun 20 2006, 05:20 AM
stampsm   sure modular is good but it has a drawbac...   Jun 19 2006, 04:05 PM
speculatrix   modular is good but it has a drawback of size (bi...   Jun 20 2006, 02:07 AM
stampsm   i am having trouble getting these quote thingies t...   Jun 19 2006, 04:08 PM
danboid   Glad to see my separate trackball + cursor keys/d-...   Jun 19 2006, 06:05 PM
desertrat   QUOTE(danboid @ Jun 20 2006, 02:05 AM)CONCENT...   Jun 20 2006, 01:11 AM
Lance   How about a IR LED that are used by standard consu...   Jun 19 2006, 07:59 PM
Da_Blitz   Why do i bother sleeping this moves to fast (6 pag...   Jun 20 2006, 04:58 AM
Da_Blitz   actually i did mention a virbrater when talking ab...   Jun 20 2006, 07:15 AM
stampsm   well off to work in a few minutes will reply more ...   Jun 20 2006, 07:43 AM
Da_Blitz   I second that but looking thregh the 2521 page ref...   Jun 20 2006, 07:59 AM
Fushnchupsh   hey, if this becomes a reality I'll totally se...   Jun 20 2006, 08:45 AM
speculatrix   now, I know people want video out, but can I say f...   Jun 20 2006, 09:22 AM
stampsm   ok for a quick recap i may have missed something s...   Jun 20 2006, 10:17 AM
zmiq2   impressive, amazing, exciting. but really feasible...   Jun 20 2006, 10:34 AM
Ferret-Simpson   Ok ok ok. . 5.1 Audio? WHAT THE HELL IS THE POINT...   Jun 20 2006, 11:39 AM
Ferret-Simpson   Anyone think this could be made Sticky? They did ...   Jun 20 2006, 11:46 AM
Fushnchupsh   As far as video out goes, I have always had the dr...   Jun 20 2006, 12:30 PM
stampsm   for wifi chips i was looking at the zd1211 chip. i...   Jun 20 2006, 01:14 PM
stampsm   well it seems that the MC13783 chip is used on the...   Jun 20 2006, 03:13 PM
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