My friend is working on a project whereby he needs to detect a falling object before it hits the ground and measure its velocity before it lands.
This is to be done using proximity sensors that are made out of common components (namely Cds Light sensitive resistor, photodiode and MCP6004 op-amp), a push switch button is also available.
Any ideas on how we should go about this?
I am thinking of using the push switch to detect the time the object falls, but am otherwise slightly lost.
Any help would be greatly appreciated.