Variable pitch transducer...continued

Here are a few pics of the variable pitch transducer. Pics will probably makes more sense than my pencil drawings. Pretty simple. Made from model r/c airplane parts. Don't let these little parts fool you. They are tough. This servo can pick up 5 pounds with no problems.

I got a little drilling and tapping to do. Not too much. Still gotta build the control circuit. Takes time. I gotta finish painting the house first. I promised...hmmmm

This oughta work good. Pics show neutral and displaced positions. It will have a cover to protect it when finished.

I should call this variable roll transducer as it funtions in the roll axis.


http://i188.photobucket.com/albums/z...r/IMG_0462.jpg

http://i188.photobucket.com/albums/z...r/IMG_0466.jpg

Lookin good CP. Maybe I'll get to see her in action someday, looking forward
to tangling with some of them chunky black crappies again :D

what's your main purpose for this device?

Good stuff Tom.

To get more rotation out of the transducer in order to see out to the sides a little better, you can use some gears mounted to the plate between the servo and the transducer. Big gear to servo and small gear to the transducer.

Quote:

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Originally Posted by PanMan_VA

Good stuff Tom.

To get more rotation out of the transducer in order to see out to the sides a little better, you can use some gears mounted to the plate between the servo and the transducer. Big gear to servo and small gear to the transducer.

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I have given the gears some thought. I had the push rods on hand, so I'm just trying it out. I can get about 45 degree rotation with 2 push rods and about 60 degree rotation with a single push rod. These are eyeball calculations (my protractor walked off).

I an trying to keep the servo as dry as possible. I can waterproof the servo, but my methods are primitive (marine silicon and machine oil) but functional.

The transducer is a 20 degree "cone angle" so I believe my maximum angle of rotation should be about 80 degrees( if I don't mess with the gain and if the cone angle is really 20 degrees as advertised).

I will be using the X47 off the Tracker, so I should get some descent echo returns.

This should work good for looking under docks, etc.

Thanks Keith. Any input is appreciated.

Tom