These two circuit examples can be utilized as stand-alone circuits or they could be used in conjunction with others. They can fully replace using a microcontroller, or at least take a significant load off of your microcontroller-based project. The examples shown here are only a small sample of what is https://3083716.uzblog.net/buy-pet-door-small-canine-or-cat-flap-2-way-locking-brown-32277545