PCTech Forums

Posted: **Mon Aug 16, 2004 3:34 am**

Both would require you to do some very advanced circuitry. The USB one would require expensive chip programming devices, and a lot of code writing. The parallel one might be more simple, but your throughput would be limited to about 1.5 megs per second... much slower than ide's 133 megs per second... transfering stuff over that would be slower than transfering files over ethernet... even wireless network.

I understand your wanting to learn about stuff like this, but without an engineering lab at a college (if they even have the stuff) you probably would not be able to get this done unless you have a few thousand dollars and lots of time on your hands.

edit: if you actually need one I've found several in the 30-40 dollar range. Check out www.fatwallet.com and go to their forums... search for external enclosure or usb harddrive

Posted: **Mon Aug 16, 2004 5:30 am**

Thanks, but as i mentioned before, I can buy one, but was looking for instructions to build one. I have been building stuff all my life. This just happens to be an item that I can't find a basic diagram of. As far as the coding, I have the means to do these things at my disposal. Just need something to go on. I have seen one opened up before. Not much to the circuitry really, some inexpensive chips mostly. The chips are available here locally as well. But thanks for the input, Test. I will keep looking.

Posted: **Mon Aug 16, 2004 1:15 pm**

I have been doing printed circuit board design and layout for over 20 years now.
I have two different schematics for usb to ide, one is in pdf format
You can download it
The other one is a gif image and it is below

Posted: **Mon Aug 16, 2004 6:38 pm**

Now that's what I'm talkin' about. :mrgreen:

Thanks a lot Gecko!!

Posted: **Tue Aug 17, 2004 1:21 am**

PCTech Forums

Here's a tough one for ya!

Here's a tough one for ya!