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Schematics for USB Adapters

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by harolddewayne 1 view

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Anybody know where I can get a schematic to build a Serial -> USB adapter? I got a new computer with USB ports but no Serial port. I'd rather not spend the $$ on a new serial port card or a hub with the serial port on it if I can avoid it. $60-$70 is a little steep for something I'm not going to get much use out of.

While we're at it, how about a schematic for a Game/MIDI Port -> USB adapter as well? I'd like to hook up my MIDI keyboard but my soundcard doesn't have a Game/MIDI port on it. :-(

TIA

7 replies

by thechas

Try the circuit cellar section at www.chipcenter.com

Any way you go, I believe you will need to program a PIC or other small micro-controller.

Have you looked into a plug in card?

Chas

by harolddewayne

Sorry - I couldn't find anything at chipcenter, but thanks for teh answer anyway. See the other answers below.

by harolddewayne

Well, I guess I asked for it . . . Information Overload. Anyway, I appreciate the answer - don't know if I'll be able to build any of those or not, but that's _exactly_ what I asked for.

by dcosgrove

Try a Xircom PortGear MultiHub. It has serial parallel and 2 usb ports for 16.77 at tigerdirect. It may be cheaper than the parts need to create your own.

by harolddewayne

I had looked at buying cards/hubs at the retails around here, but they were $60+. If tiger has them for that low, I'll probably get one. Thanks.

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