CannonCreator wrote:I wonder how the boards real cronos completely work, theres some pretty crazy electronics out there.
"Real" shooting chronos are pretty simple. A single chip computer with optical gates (like phototransistors).
You could probably build a nearly exact duplicate for less than $100. Start with something like a Parallax Basic stamp
(or any other single chip computer) for $50, add the small dot matrix display for ~$20, a pair of phototransistors for the detector and a 9V battery and you're done
I'm pretty sure that that is basically what a Chrony and the paintball and Airsoft chronies are.
The only thing remotely challenging is that speed is the reciprocal of the time the round takes to pass between the two gates. The calculating a reciprocal is not one of the basic math functions that can be done with just a couple resistors and capacitors. If you don't mind doing the reciprocal yourself then all you need is a timer accurate to perhaps 10 microseconds and the detector gates.