In My Previous Post , I have shared build of my LPG and Smoke sensor..
Today I am sharing my PIR motion sensor build based on STM330.. This is my last sensor.. I have shared Circuit diagram of all my sensors in this post
PIR motion sensor I am using for my stairs , when there is movement around staircase, STM330 with PIR motion sensor sends telegram to Raspberry Pi. and Raspberry sends telegram to wireless Light relay (Build in final stage) by 2.4GHz transceiver.
Here are few pics of my STM330 Based PIR motion sensor...
This module is battery operated because PIR motion sensor required 50uA of continuous current and STM330 may not able to provide this current in night.
Here PIR motion sensor output is connected to STM330 Wake0 input ... so when movement detected by PIR sensor, its output become low to high and gives rising edge interrupt to STM330, which then sends telegram to Raspberry Pi.
Here is my Wireless relay switch in final stage of build.. It works on 2.4GHz transceiver.. and Arduino Atmega 328 mcu... This relay will be used to turn on/off any home appliances wireless from openHAB application running on Raspberry pi..
Once this wireless relay is done... I will submit my final post with video of working of all sensors and openhab code/ enocean sensor codes...