Español:
Código muy simple para µcontroladores ATMega48V o similares para la apertura, cierre y detención de una puerta de garaje.
Contempla la opción de usar sensores para detener la puerta.
English:
Simple code for µcontrollers ATMega48V (or similar ATMega I/O devices) for opening/closing/stopping a garage door.
It has options to deploy sensors for stopping the door.
Code comments in spanish but very simple to understand.