How to get the right voltages to make a circuit with laser pointer, LDR and motor?
In short, it is for a uni project, and what I would like to do is shine a light (laser or white light) onto a prism that would have a LDR to detect the light and trigger a motor - the motor is attached to the prism to make it spin and refract the light to the next prism for a chain reaction mechanism to happen (I'd have 3 of them operating in a circle, maybe..)
What I really need to know is what types of components to buy as there seems to be different kinds of every one, different voltages. (for example, how strong a laser do I need to be detected by the LDR, etc etc...) Don't want to fry anything!
Thank you very much for you help! :)