K-9 was my first full-scale robot.  Before I get any further, I'll lay down the disclaimers:

1)  This was not an autonomous robot--it was radio-controlled. 

2)  This was intended to be a replica of the K-9 robot on the BBC television show "Doctor Who".  No copyright infringement or whatever was intended. 

3)  I was in my early teens when I made this thing, so gimme a break.

Nobody's actually given me any grief about any of the above matters--I just thought it best to head those issues off at the pass.

At any rate, the pictures below are of the last version of K-9 I built, Mk3.

Mk1 was *very* rough.  It was basically a silver trapezoid on top of an underpowered R/C car.  As I recall, that car was prone to interference, which made for some interesting (read: embarrasing) behavior.  It wasn't very glamorous, and I'm not sure if I have any pictures of it.  I actually named it K-9-2, out of respect for the original K-9 on "Doctor Who".  I built it while I was in the 6th grade, and I think I actually won 1st place in the Science Fair with it.  (If anyone from my past remembers otherwise, please e-mail me with the correction.)  It was basically constructed of corrugated cardboard.

Mk2 was a much better approximation of the original K-9.  The underpowered R/C car was replaced with a much more capable 4-wheel drive R/C truck.  I added some flashing LEDs on the back console, and the ears were able to rotate (manually).  The eye panel lit up, too.  The innards were accessable by removing K-9's starboard panel.   This one was also constructed of corrugated and non-corrugated cardboard (cheap and easy to work with).  I built it when I was in 7th grade.

Mk3 was basically a revision of Mk2.  The main body and R/C truck remained the same.  I built a new head, which was a more accurate recreation of the original K-9's head.  I also built a new back panel and used incadesent light bulbs.  The back panel also looked more like the original's.  Here comes the really good stuff--I added electronic goodies:

I still have K-9 Mk3.  Poor thing's been sitting around for years and has fallen into a poor state of disrepair--especially after I scavenged his R/C truck to make Isaac.   I tried hooking up some batteries to see if I could at least get the lights working, but that was a bust.  :(  Perhaps a restoration project is in order.   (Probably not, since I'm pressed for time as it is...)

Here are some pics I took.  (I hope to take some better pics soon.  There wasn't quite enough light in the room when I took these, and my digital camera leaves a lot of yellow "artifacts" on pictures in low-light situations.)  Each picture is a thumbnail--click on it to see a larger version.

Front 3/4 shots, side view, and front view:

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Close-up of Mk3's ears.

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The back panel.

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(Manually) telescoping "eye probe", just like the original (except the TV version was motorized).

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The insides. 

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This pic is looking up into the back panel.  (Please ignore the awfully nasty wiring.)  I actually made each light housing.  You can also see the mangled musical calculater sprawled above K-9's neck, and where the tail (made from an automobile radio antenna) meets his neck on the inside.  If you look closely, you can see that the back panel was made from a Raisin Bran cereal box!

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K-9's dog tag (not thumbnails).  Company logo on the front (MECR:   Michael Eugene Carlson's Robots--not terribly creative, I know.  I was a kid--gimme a break.)  Engraving on the front was done by my friend Bill Brokhoff, hence the small BB at the very bottom.   The backside contains the I.D. number, and I did it with a gold paint pen.   The I.D. number indicates the model number, revision number, and completion date.   Therefore, this K-9 is model 01, revision 03, completed July 28th, 1987.

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I still have the Mk2 head, shown below.  The close-up of the ears shows that they look more like the TV version.

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Here's an old pic of K-9 Mk3 back when in his prime (not a thumbnail).

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