Overview

Inside our new home we have an KNX https://www.knx.org automation bus. I have not found an nice looking "RoomSensor" which has the following sensor equipment:

• temperature
• humidity
• brightness
• passive infrared motion (PIR)
• smoke detector
• CO2

Components

so i decided to build my own. After looking what is possible i choosed the following components:

• ARM Cortex-M4 microcontroller STM32F4

UUID used for iBeacon funtionality: C8A8F392-D8ED-47EA-85FE-0EB1903425AD