Need Pinout for Boe-Bot CMUcam

greatnauman

Hello Guys!
I am using Boe-Bot CMUcam for my·robot but I am not using Basic Stamp as the brain of my microcontroller. Instead of Basic Stamp, I am using 68HC11 for my robot. I am trying to find out the pin detail for this "Boe-Bot CMUcam" to interface it serially with my microcontroller. Can any one provide me either schematics or Pin details for Boe-Bot CMUcam.

Thanks,

Chaudhry

RDL2004

Maybe you can figure it out from this? It looks like the same board.



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- Rick

Post Edited (RDL2004) : 11/12/2006 1:17:07 PM GMT

greatnauman

Thanks for replying!

But this is layout of CMUcam board and you can see that in my picture, the red board after the camera. I have tried to find out pinouts for Boe-bot CMUcam but no information is available about them. I think no body has ever tried to interface it with other microcontrollers. CMUcam has lot of information on online but not boe-bot cmucam.

Chaudhry


Post Edited (greatnauman) : 11/12/2006 8:55:08 PM GMT

RDL2004

The bottom board is just an Appmod board used to interface the CMUcam to the Board of Education/BoE-bot. The app mod connector pin-out is 2 power connections at one end and two ground connections at the other end. The rest of the pins in the middle connect to the Basic Stamp i/o pins. You can probably find a diagram in the BoE documentation.

It looks like the Appmod board does add some LEDs and buttons and such, but the CMU connections probably just pass straight thru. You don't need the Appmod board to use the CMUcam with other microcontrollers, or even with a BoE-bot.

Here is a CMUcam on a BoE-bot with no appmod board:

www.seattlerobotics.com/boe-bot.htm

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- Rick

Franklin

If you look in the middle of this picture the appmod plug is labeled.
www.parallax.com/images/prod_jpg/28103.jpg

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- Stephen

greatnauman

That is what the confusion is. According to this picture CMUcam is utilizing all I/O pins of Basic Stamp.

Where as, page # 2 of the·datasheet at http://www.parallax.com/dl/docs/prod/robo/cmucamman.pdf

says

"With some clever circuitry on the AppMod board the two buttons, eight led’s and one piezo speaker only

require four I/O pins on your Basic Stamp2 thereby conserving I/O pins for other uses."
--Chaudhry

RDL2004

Most of those pins on the Appmod plug are probably not connected to anything.

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- Rick

greatnauman

Rick, that is what i was thinking before. But if you look at this demo program, http://www.parallax.com/dl/src/prod/3rd/cmucamdemo.bs2

you can see that it is using some other pins as well

for example in this line of the demo program, it is using pin 4 as input and pin 8 as clock and so on.

SHIFTOUT 4,8,MSBFIRST,[noparse][[/noparse]255]

If i start looking at this demo program and try to figure it out the pins it is using, even then i am not sure that whether i am using correct pins or not. And secondly, this program might not be using all the pins which i need.

So, the exact layout is very important for me to interface my boe-cmucam with my 68hc11.

--Chaudhry

RDL2004

I'm sure somebody from Parallax will post the info you need as soon as they get back to work on Monday.

Can the Appmod board be easily disconnected from the camera so the camera can be used directly or are the wires soldered to the camera board?

I was just wondering because I might like to try this thing out but I won't have much use for the Appmod board.

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- Rick

Chris Savage

Rick,
·
·· I have requested the information an am awaiting a response.· Thanks.

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Chris Savage
Parallax Tech Support

Chris Savage

Hello,

·· The following information was sent in from Seattle Robotics regarding the pins used on the CMUCam1...I hope this helps...

Boe-Bot CMUcam1 AppMod consists of two separate circuit boards connected by 5 colored wires or in rev B, four wires in a ribbon cable. The CMUcam1 board uses two pins on the Appmod connector for serial in(pin 9) and serial out(pin 7).
The AppMod board uses pin 13 for a piezo speaker, pins 4 and 8 (5 and 11 on version are used with an 8 bit shift register with 8 led’s. On version A pin 5 is used with a resister ladder and the rc time function to read the value of two push buttons. On version B pins 6 and 8 are used for the two push buttons without using the rc time function.
None of the other 16 I/O pins on the AppMod header are used by the Boe-Bot CMUcam1 AppMod. However the AppMod board does not extend the AppMod header through the board effectively capping it just like your LCD terminal AppMod product does.



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Chris Savage
Parallax Tech Support

slamer

Ok, Chris Savage (Parallax),·I think I get it now. If you have a Parallax CMUcam1 AppMod Revision (B) .

For this DEMO program (CMUcam1 BoeBot AppMod 1.2 Demo Program) this should be the pin out....

P5 -shift register

P6 -button

P7 -serout

P8 -button

P9 -serin

P10 -speaker (Freqout)

P11 -Shift register

the two pin header connector is Vdd or +5 VDC

the 20 pin header is providing Vss or ground on the pins that are closest to the two pin header or the select switch depending how you look at things.

So this kit is actually using SEVEN I/O pins in this configuration

This what·I get from looking at this software version and by testing the power and ground connections with a multi meter

Please Verify my assumptions....

Thank you...

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Steven Kirk Nelson (slamer)

Team K.I.S.S
Build Safe, Build Mean, Build Strong!

slamer

Boy·I could still use the Pin Out for the ribbion connector for the CMU1 Cam without using the APP mod board.
It would be nice if Parallax could give me a pinout. Please and stuff......?

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Steven Kirk Nelson (slamer)

Team K.I.S.S
Build Safe, Build Mean, Build Strong!

Chris Savage

Steven,

Have you contacted the manufacturer, Seattle Robotics" to see if they have this information readily available?

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Chris Savage
Parallax Tech Support