USB - Serial cable
 

Hey guys,
i am trying to get a picture from the cmucam2 using mplab to my laptop, which doesnt have serail ports, only usbs (4 of them).
i read somewhere that i need a driver of some sort...
the usb cable im using is from the vex kit, i think, and its orange, if it helps you help me =]

Thanks, im depsperate here!

Re: USB - Seiral cable
 

maybe this thread will help?

http://www.chiefdelphi.com/forums/sh...ad.php?t=46174

a real serial port does seem to work better, though. Don't you have any old computer around? (asks the guy with about 100 old computers at home)

Re: USB - Seiral cable
 

thanks, its ALIVE!

Re: USB - Seiral cable
 

ANOTHER PROBLEM:
i've downloaded kevin's whistling code to the RC, connectede the camera as said (i think), and it isnt searching for the light at all...
anyone knows what it might be?

Re: USB - Seiral cable
 

It might be any one of a dozen wiring issues.

It might be that you don't have camera power applied.

It might be that you don't have the pan and tilt servos correctly connected.

It might be that you don't have a fully-charged backup battery connected.

It might be that you don't actually have the camera serial data connected properly.

It might be that you don't have the Robot Controller enabled.

It might be that you have a faulty camera board.


What is it doing? You should be able to monitor the process with a terminal window while the computer is connected to the RC's program port.

Re: USB - Seiral cable
 

yup, having a few photos showing your setup, including all the wiring connections, and maybe some screen shots, would help others help you figure it out.

Re: USB - Seiral cable
 

the camers is on, backup battery is good too...
it might be the wiring, though i dont thins so. pan is pwm1 tilit is pwm2, power is frome pwm16 and the ttl is connected, is that it?

The window is supposed to say search, but it doesnt...
any clue?

Re: USB - Seiral cable
 

What is the LED on the camera doing?

How about when you put the green light in front of the lens?

Jacob

Re: USB - Seiral cable
 

At the risk of (almost) repeating myself...what does it say?

It sounds like the Robot Controller is not running the program. Are you running it tethered or via radio? What color are the status LEDs on the RC and OI?

Re: USB - Seiral cable
 

OK, now i've got her searching for the light, but once she finds it she doesnt stop searching, but keeps on going..
the red led doesnt turn on when she's "on" the target.

Re: USB - Seiral cable
 

Make sure the camera lens is properly focused.

You might find most of your concerns are addressed in Kevin Watson's CMUCam2 FAQ.

Re: USB - Seiral cable
 

If the red light doesnt come on the camera is not tracking it, even though its pointing at it. You might want to recalibrate your camera and get new color values.

Re: USB - Serial cable
 

The camers if focused. I have calibrated her udins LabView, but it still doesnt work.
Any ideas?

Re: USB - Serial cable
 

Any ideas anyone?

Re: USB - Serial cable
 

Download the CMUCam2 GUI and capture an image with the light in it. Next select the light and check to make sure that the values Y, Cr, and Cb are within the ranges you found when you calibrated the camera.

If the red light does not come on then the camera doesn't see the light, it must either be out of focus, calibrated wrong, or wired wrong.

James

Re: USB - Serial cable
 

ok. now it gives me the red led, but keeps on searching....
sorry for all the mass...

Re: USB - Serial cable
 

We kept getting the problem you are having. We tried downloading the default camera.hex file that comes with the default code on Kevin Watson's page, and it worked. Then we used the default code from there on. I think the problem had something to do with a conflict between pwm01 and pwm02.

Re: USB - Serial cable
 

Which one is it that worked for you?

Re: USB - Serial cable
 

We had to start over with the default code. But first download the default code and immediately load the precompiled hex file to the controller without compiling anything, since the code is supposed to work with the camera immediately.

Re: USB - Serial cable
 

Yea, but what code is taht?
Bells and whistles 2.1/2.0 ?

Re: USB - Serial cable
 

Sorry yes the Bells and Whistles 2.1

Re: USB - Serial cable
 

It doesnt seem to work for me.
The camers sees the light, stops on it momentarily, red light is on, and then just keeps on searching as if it never saw the light.
Anyone familiar with that?

Re: USB - Serial cable
 

That's #14 on the CMUcam2 FAQ I pointed to a few days ago. Read it and follow the suggestions.