I am going to have to read through the last few posts to digest all the information but let me say this first. I am not concerned with the width, weight or speed of the pendulum. Because I will have different users they may lift the pendulum higher or lower than another user making the speed faster or slower at the bottom of the arc. I know already the pendulums being measured will have different thickness and it makes no different what so ever. I know the mass of the pendulums will all be different but length not mass determines the length of the period. All I am trying to do is measure the different in time when the pendulum's leading edge passes the start position and when the pendulum's leading edge passes again for the second time. That is one period. Yes if I time 10 periods of the pendulum and divide by 10 I will have my time in thousands of a second and that is what I would do if my circuit was not capable of measuring past hundreths of a second.
I think modifying an existing stop watch with an electronic trigger is a great idea. There may even be something like that out there. I will do some due diligence on that point.
Thanks for the ideas guys keep them coming.
I think modifying an existing stop watch with an electronic trigger is a great idea. There may even be something like that out there. I will do some due diligence on that point.
Thanks for the ideas guys keep them coming.