Well, I guess its not clear in the picture but the coins are already falling into the correct slots because the red track has different grooves the indicate when a coin has enough room to fall. Therefore, I just need to detect when a coin falls into a container (so a sensor needs to be placed either above each cylinder or on the side. Also, the toggle I was thing of would not really be a toggle but some sort of switch that would move down when a coin falls into the cylinder, report a "1" and then move back to its original position (in an automatic, spring-like action). Therefore, I was thinking that the switch or toggle must be very light so when the lightest coin (dime) falls it can at least trigger the switch. If the dime can trigger the switch then every coin will work. I'm just trying to see if any switch could work because using light detectors over each cylinder may be inaccurate at times due to vibration.