This video shows my first attempt to create robotic fish fins made from flexible PCB Actuators!
There were quite a few things that a learned from these experiments. The first prototype that i made did not actually work very good in water. Its magnet in the middle was too heavy when compared to the force the magnetic actuator was producing. The second prototype was much lighter and managed to move easily in water. It was still limited by the wire, but obviously this is going to be remove in the future version.
From these tests I can start designing a 3d printed version that will house all the control electronics, battery and magnets.
This is smart, being capable of flow the sand will prevent too much bacteria from constructing.
Shrimp could be capable of have a nice source of meals too. You can see equipment detail here https://flyandspincasting.com/