Robot fish


robo fish

 

Go figure you don’t have a realistic “fish” thing going to build a robotic fish.

With the $10 second hand handycam dive enclosure we have a body.

sony cam

 

Now I was saving pennies for waterproof servos to see if they would paddle this along.

Then I noticed cheap (really cheap) camera gimbal drivers and brushless motors.  Brushless motors, in principle, can work underwater (plenty of examples on you tube) so I thought why not gimbal motors which work like servo motors.  I will have to re-code the driver but it will be to take the IMU code and replace it with sinusoidal drivers to “undulate” the tail.

gimbal driverI bought 4 $13 motors to try the idea out.

 

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