A friend and I want to do a project where you can throw an object and it will connect to your phone and tell you how far you threw it, but we don't know what materials we should use, any advice helps, thank you.

Need help starting project

system May 3, 2018, 9:27pm 5

What sort of error can you tolerate?

forworded strait to a phone I don't know were to start though

Your Google searches might go better with better spelling.

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