Hello guys,
I wan't to make something very similar to this, but a little bit smaller:
Basically I'm pulling real-time waves information from an API via Processing, and I want to replicate the waves in an aquarium. This aquarium has 60x25x5 cm dimensions, so, it is very narrow, but I want to make an object go up and down like the one on the video.
I'm trying to do this with DC motor (servo), attaching a wheel and a brace to do this effect but it seems not to have the necessary force, and I can only control the speed on the arduino (without the motor shield).
Is there any better solution? I doubt I am using the right motor and technique to accomplish the effect on the video.
the up and down motion from a servo should be pretty easy to do. how well does it work without water ? if the force the issue ? (too small of a motor ) if so, you could try a smaller displacement.
the up and down motion seems very easy to make and it would seem that a continuous rotation motor like a stepper would offer more control of speed because steppers are so easy to run at low speed.
as for a motor driver, you must power the motor separately. the servo has an internal driver, the stepper requires something like transistors externally. you make a dual H-bridge to power the motors, but it would be easier to buy a driver, but that takes time for delivery.
I am intrigued by the tipping bucket rain gauge concept. the pump fills one side until it spills out. then fills the other side. a oscillation of sorts is created with no additional force. in a fish tank that would also add some air into the water.
