Motor Mount & Wheel Kit (27971) controller pins to USB port

Dogulas

Hi,
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I have another question about the Motor Mount & Wheel Kit with Position Controller (27971).
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On the Position Controller the pins to connect to a controller contain GND, +5VDC, and DATA.· I want to control this with a Via EPIA Nano ITX board which does not have any standard serial Com ports, only USB ports.· I’m assuming I need some kind of USB to serial converter product.
·
I was looking at USBIO24 R Digital I/O Module from Elexol at http://www.elexol.com/IO_Modules/USB_IO_24.php
But the reseller wasn’t sure if it would be fast enough.· I also looked at USB to TTL 72in Serial Converter Cable from SuperDroid at http://www.superdroidrobots.com/shop/item.asp?itemid=795&catid=57 but it uses full TTL communications and I don’t think that is what I need.
·
Does anyone have any suggestions for getting this data in and out of my USB port(s)?

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Thanks,

Dogulas

Chris Savage

Hello,

Most USB to serial adapters are RS-232 compatible on the device side. The main problem is that you need non-inverted TTL compatible signals and they need to be on a single I/O pin at the other end. There are circuits that demonstrate this at the following link. I hope this helps. Take care.

http://forums.parallax.com/showthread.php?p=640507

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Chris Savage
Parallax Engineering

Dogulas

They were MOST helpful.· Thank you Chris.

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Thanks,

Dogulas