Alarm system

hello everyone.
Is it possible to build an alarm system with a siren and RFID keys with no Arduino, only using 5 PIR detectors a raspberry pi a Rfid Rc522 module, and build in speakers output? has everyone ever tried? thank you!

why you want to use 5 PIR sensor?
first, add a RC522 to raspberry and get it working How to Set Up a Raspberry Pi RFID RC522 Chip - Pi My Life Up
once you are good with it, use GitHub - myDevicesIoT/Cayenne-MQTT-Python: Python Library for Cayenne MQTT API to send data of PIR and RFID to cayenne and also add the code to play audio through the speaker.

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