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The Mother of All Daughter Boards?
Getting the CD-Rom Inside

New MessageThe Mother of All Daughter Boards? (modified 0 times) KneuB_2
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I've noticed that nobody has successfully put a CD-ROM inside the i-opener (other than the base), and now that I've been playing with the idea for a while I believe I've come up with a potential way to put A CD-ROM inside. As you can see from the photo, the key to accomplishing the task is to get those two capacitors out of the way. Everything else can be removed, replaced or relocated (think daughter board and look at all of the new real-estate for other pet projects). I've had two thoughts on how to resolve the capacitor issue, but since I'm not an electrical engineer I don't know what my potential pit-falls are so I'm asking for your advice and suggestions. The options I've thought of so far are;

1) Relocate the capacitors the way it was done in a power supply I just tore apart. Basically very long protected (plastic tube shield) leads.

2) Replace the capacitors with flat capacitor "Banks" and let the banks lay across the surface of the motherboard. The key is to keep it below the height of the battery.

So is there anything fundamentally wrong with either of these two approaches? If so, how do I get around this?

to get a feel of what I'm thinking

BTW....How do I read this capacitor?

OK I admit it, I'm way over my head and this is a %@#% of a steep learning curve for me. But then again, that is what make it so fun!

02-09-2001 00:41:27

New MessageRE:The Mother of All Daughter Boards? (modified 0 times) YouBecha
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I am not an engineer or in fact have any real knowledge on the subject ;)

But I can't think of a reason it wouldnt work, the difficulty may be in desoldering the item, since it is probably soldered on both sides of the mobo. And you don't want to heat it too long or you will cook it.

The number may be a manufacturer specific ID, Can you see a name on any of the sides, that would help in the search...of course a nice set of schematics would help a lot also.

But a capacitor will have a storage capacity in Farads or microfarads (uF) Usually electrolytic capacitors (the barrel shaped ones) will have a voltage also. (so for example it COULD be 330uF and 25V, or those could be random numbers)

Any EE guys feel free to correct me...it has been a few years.

02-09-2001 06:16:13

New MessageRE:The Mother of All Daughter Boards? (modified 0 times) Turbo3
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Actually I have one iopener where I did relocate the bottom capacitor in your picture so I could place an HDA in that position. The capacitor is surface mount so it can be removed without access to the bottom of the motherboard. It does take some skill to remove since one side goes to the ground plane which will require a lot of heat.
02-09-2001 10:20:14

New MessageRE:The Mother of All Daughter Boards? (modified 0 times) mp3boombox
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this may be a little off topic BUT to be honist i believe it would be a little more logical to try putting a FLOPPY drive in the case. the Ibm floppy drives are standerd floppy controler drives BUT its getting them wired up and powerd that could post any kind of problem.

there about 10mm tall where a CDROM is about 12+ there shorter 4"x5"x1cm even. an external case for a cdrom would be much easyer. beside a flopppy's space would make for that much less hardware that would need to be removed/relocated. Oh and to think the floppy drives have standerd location/size screw holes. If i can get this floppy functioning period I'm going to strive twards doing just this. The thing that wil realy pose a problem is the heat synk for the q16 its got to be huge. The current one I have i'm going to rebuild to make it a litle more effective and shaped better. Now my only other problem is that I'v got a FAN right in the middle of the uper left hand area. I personly may just end up having to wire in a an external. But my floppy does have an external case. so this will be intresting.

02-10-2001 07:51:08

New MessageRE:The Mother of All Daughter Boards? (modified 0 times) mp3boombox
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Oh an other thing dont quote me on this cause i dont have my IO appart and am not about to yank it appart just to do a test but. There is a CHANCE ONLY a chance that a floppy drive and the compact flash could fit in the io at the same time/side. But the floppy drive would be riding prity high. This also means your getting rid of some important screws which hold the IO togeather. Oh an other thing i just though of is that of this, if you removed those parts. Now there still is a chance a cdrom wouldnt fit inside the case cuse of the long 4 screws holding the stand to the back of the io. They do stick into the case of the computer a good little ways. This only makes my point a little fermer putting a cdrom/floppy drive external would be better.

Now I did do this in a way. If i can find the URL in past post i told about how i put a cdrom into the base of the IO. but i sold that io a while ago and never got pictures of it.

\http://www.linux-hacker.net/cgi-bin/UltraBoard/UltraBoard.pl?Action=ShowPost&Board=technical&Post=950&Idle=0&Sort=0&Order=Descend&Page=4&Session=mp3boombox.96536404546619

look for one of my HUGE post's its like in the middle. CDROM IN THE base of the iopener would be a little bit better. BESIDES on the under side of the base there are a bunch of suport crosses which can be removed to create 2 battery pack areas. ALSO with the right revers gender connector of a standerd laptop multi bay drive unit you could use any say tecra laptop drives i.e. cdrom, cdr, dvd, zip, super zip, super disk, hard drive adapter to add a second hard drive. Granted this wouldnt be hot swapable BUT jesis the ablity to just unplug any standerd WINDOWS laptop device throw in an other one and reboot. Thats something to stride for. Best of all you can use THIN 50pin external mini scsi connector. THERE small!! and put it into the base of the IO. or just a cable of some kind with XX amount of wires in it. that way you could just fold up the IO easly. Though I'd suggest using an external connector this way you can make some adapters to use for other IDE devices.

HELL space wise for what i have on hand an xm-1402b 6x speed cdrom and one of these super flat laptop floppy drives can FIT side by side in the base. Though the cdrom would be more to the left or right due to how long they are. It has to extend into the base a BIT. But the floppy drive is so short that it fits in the FRONT with plenty of space for one of the stand leg support areas.

tell me what do you think of this idear????

if you look at that URL you'll get a FULL read out on how i did it.

02-10-2001 08:13:23

New MessageRE:The Mother of All Daughter Boards? (modified 0 times) mp3boombox
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//http://www.linux-hacker.net/cgi-bin/UltraBoard/UltraBoard.pl?Action=ShowPost&Board=technical&Post=950&Idle=0&Sort=0&Order=Descend&Page=4&Session=mp3boombox.96536404546619
02-10-2001 08:13:42

New MessageRE:The Mother of All Daughter Boards? (modified 0 times) mp3boombox
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http://www.linux-hacker.net/cgi-bin/UltraBoard/UltraBoard.pl?Action=ShowPost&Board=technical&Post=950&Idle=0&Sort=0&Order=Descend&Page=4&Session=mp3boombox.96536404546619
02-10-2001 08:14:22

New MessageRE:The Mother of All Daughter Boards? (modified 0 times) mp3boombox
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SHOOT i should have read that post first. Ok, the cdrom mod I'm talking about is about 75% down the page. the post near the middle is about my speical heat synk setup with ULTRA mini fan.
02-10-2001 08:18:04

New MessageRE:The Mother of All Daughter Boards? (modified 0 times) BigDog
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Another thing to worry about is the angle the CD drive is mounted, most require a 15 degree from either horizonal or vertical.

I tried something similer on my IO with a cdrom drive on the back and my 24x Teac wouldn't read correctly unles the it was drive was tilted straight up or just about flat.

The standard noteboot cdrom drive aren't made to function in all postions.

02-10-2001 23:44:17

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