RaspberryPi communication with Attiny85+PIR sensor alert system depends on movement

In this project I used Attiny85 + RaspberryPi+ 433Mhz Transmitter and PIR sensor. So when ever PIR sensor detect any human movement, it(PIR sensor) will activate attiny85 and send signal throw 433MHz transmitter and RaspberryPi will receive the signal and put to MySQL. Below video can explain more about my project:

Attiny85

Ask me question if you want to more about this project.