I've been trying to google but I can't find anything like I'm trying to do. I think I need some guidance on what terms to search for and what exactly is possible to do.
I need 2 lights( leds), red and green.
When switched on, the red light is on, then once the person hits the button, it begins the "secret" countdown for the random timer.
When you press a button, it starts a random timer that you can set, before changing to green.
ie. 1-3 secs ; 1-4secs; 2-5secs; 1-10secs etc
when it finally turns green, i want a horn/buzz sound to go off at the same time.
Reset button to start it all over.
The red light can just stay on while waiting for the race to start. Random countdown begins after button press
*probably possible but not necessary, and way out of my league, is to snap a picture of the starting line to make sure no one is starting off the line early. This would snap as it turns green
The lights can fit into an enclosure of about 5'' x 10 x 5'', only needs to be seen/heard within 3 feet.
This is my first time working with anything like this, but I feel up for the challenge. Would appreciate terms to google for that would help me understand how to make this, and or code commands that I could look up to learn. also if this is even possible. Thanks!