A smart home offers the possibility of making your life easier and save energy.
For this purpose you have to gather data of your home (the more, the better ;)).
Unfortunately, there are no combined sensors, which fulfil all of my requirements - so I have design it myself - and share it with the community. of course!
Let’s summarize my objectives for this project.
- Battery powered (battery life better than 6 months)
- Wifi and MQTT support
- PIR sensor
- Ambient light sensor
- Temperature and humidity
- Not that expensive
- Small form factor
See also our blog at https://blog.m3k.cc