A few years ago I built a keyless entry system for my shop using a keypad, now it is time to update it to use an RFID key-fob. My homemade door actuator was made from parts out of an old VCR. The electronics controlling the system consist of a few components, a NE555IC (timer), a small NPN transistor, and a double poll double throw relay.
This video outlines the whole project including the RFID module, homemade door actuator, and door actuator timer and relay circuit.
If you are interested in the schematic diagram you can view and download it here.
View or Download RFIDKeylessEntrySchematic 75.0 kb.