Hi guys I am currently building a countdown timer into an impact case, but have just discovered arduino and thinking that it is definitely the best option.
I need the arduino to have 3 buttons ((mins, secs and start/stop) the mins will plus 1 for every button press, same for secs etc.) I am also needing the mins and secs to be a reset when pressed together.
What i am hoping to do is when the timer hits 10 seconds a collection of red leds will light and turn off on each second and when the timer hits 0 they stay on until the unit is reset to 0 (min+sec key press)
can someone please tell me where to begin?
I have seen examples of timers that already exist and want them to be like the image below, only with the above mentioned 3 buttons and lights on the final 10 seconds and a continuous one on 0 until the unit is reset.
Any help is greatly appreciated and i apologise for being a noob!