Hello all,
if Switch1 is press,LED1 light up, press the Switch1 again, LED1 turn off?
if Switch2 is press,LED2 light up, press the Switch2 again, LED2 turn off?
if Switch3 is press,LED3 light up, press the Switch3 again, LED3 turn off?
Yes this is the meaning about this sketch.
how do you connect the wire for the switches and LEDs?
do you have a pull-up/down for your switches?
These buttons are pull-down connected,
How can i make the Val and val_old as index ??
Greetz , ArduinoPat