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Unread 23-11-2007, 21:04
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Phalanx Phalanx is offline
Formerly Team 1089 (Mercury)
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Re: TTL CMUcam2 2004 eduRC bug... HALP PLZ

Quote:
Originally Posted by ruddy View Post
I think I narrowed the situation down to the TTL not working, but would that prevent the camera from going into "search" mode?
Yes, if the camera is not present(It won't be if the TTL adapter is faulty) there will be no tracking information, and initialization will fail so no searching will take place.

Quote:
Originally Posted by ruddy View Post
Also, can someone help me configure the TTL adapter... I'm drawing .5v from one of the PWMs into the spare slot on the TTL adapter.
First I would download the 2007 CMUcam2 Setup and Initialization PDF and see page 5 for the TTL port pin outs. Looking at it they are left to right GND, TX out, +5V, Rx in with Rx in being closest to the 9-pin connector.

It should be wired it as follows:
+5V from one of the PWM's to +5V on the Camera TTL port
GND from the EDU TTL to GND on the Camera TTL port
TX out from the EDU TTL to RX in on the Camera TTL port
RX in from the EDU TTL to TX out on the Camera TTL port

*Yes you need to cross over TX and RX pins*
*You will not need a TTL to RS-232 adapter*
*This will both power the Camera and allow for data transfer*
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Last edited by Phalanx : 23-11-2007 at 21:07.