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Unread 06-06-2006, 23:30
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Matt Krass Matt Krass is offline
"Old" and Cranky. Get off my lawn!
AKA: Dark Ages
FRC #0263 (Sachem Aftershock)
Team Role: Mentor
 
Join Date: Oct 2002
Rookie Year: 2002
Location: Long Island, NY
Posts: 1,187
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Re: Attaching the CMUcam to the Vex controller

Quote:
Originally Posted by skimoose
You can, but TTL is not reliable for other than short runs. Serial data can be transmitted further and more reliably. Whether you change signal levels or not, a loose connection is a loose connection.
We used straight TTL for the robot this year, and we covered at least 5 feet without any communication trouble, plus the connection was a lot steadier and less prone to wiggling free than with the driver chip. Plus that little (breakable) chip being a failure point for our targeting functions made us nervous.
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Matt Krass
If I suggest something to try and fix a problem, and you don't understand what I mean, please PM me!

I'm a FIRST relic of sorts, I remember when we used PBASIC and we got CH Flightsticks in the KoP. In my day we didn't have motorized carts, we pushed our robots uphill, both ways! (Houston 2003!)
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