greetings, i'm tring to build an ifared remote. i have found diagrams for a single button remote, but i want to have a control that can operate more than one option. i need a circut that would respond to a particular pulse are frequency but would net respond to any other pulse.
setting up differnt pulse signals would be easy enough but i can;t figure out how to build a recevet that would meet my needs.
any help would be apreceated, but keep in mind that i am very new to the electronic realm. thanks