Door Sensor 433MHz with open/close/battery status

[thisisIO (Michael)]

@vzorglub

If I was going to build my own house, I would wire EVERYTHING
If I must use wireless the ZWave or cheaper Zigbee
Wifi is very good but power hungry and your router can’t support that many clients so you would need to upgrade your router and fash a good open source firmware on it.
RF/IR is only for harware without binding or no other solutions. (Or budget limitations)

Understood! Thanks!
And whitch Door sensors do u use now (besides 433 Mhz Keru)? )))

[vzorglub (Vincent Regaud)]

I mostly made my own:

Home | MySensors - Create your own Connected Home Experience

[Gad_Ofir]

I gave it a real try…
I guess i am not cut up to the electronics part

i ended up spending hundreds of dollars on 0.50 cent parts
but its real fun, i guess when i will have more time i will make it work

i will advise staying away from this kind of project, if you don’t yet have the skills and you want Home automation working in the near fauture

[vzorglub (Vincent Regaud)]

@Gad_Ofir

i will advise staying away from this kind of project, if you don’t yet have the skills and you want Home automation working in the near fauture

Or be ready for failures…
But it’s real fun indeed to make your own hardware and deploy it

[thisisIO (Michael)]

There is not less problems with commercial products that costs real money!
I read now reviews on zwave systems on amazon they have average 3,5 stars. How do u think It is ok for door or motion sensor for 50Eur? For example that battery life is 2-3 weeks((
And is it better then 433 interference problem?
I do not know what to choose))) It it a complex World)))

[mhfalken (Michael Hansen)]

Why does it have to be 433MHz? I have made a solution with Open/close and battery status using an ESP32 and the build-in WiFi. It can run app. 5 years on a battery. It is using MQTT which is build-in in OpenHab.

/Michael

[Gad_Ofir]

Hi please share

what code are you using?
what sensor?
i have some E32 laying around maybe i will give it a try
it can also report temp right?

[mhfalken (Michael Hansen)]

The code is homemade, based on freeRTOS (not Arduino) to save power. ESP32 doesn’t have a build-in temp sensor. For the window sensor I am using a reed relay and a magnet - pretty standard. Here is a picture of the it.

/Michael

[mhfalken (Michael Hansen)]

This is just a prototype - it is missing a few components, but is working fine anyway. (I have made a real PCB which is currently in production).
I can’t upload the code as c extension is not allowed?
/Michael

[vzorglub (Vincent Regaud)]

Convert it to text or just post it

[mhfalken (Michael Hansen)]

Here is the code - hope is works:
window-sensor.c.txt (12.3 KB)
/Michael

[luckymallari (Lucky)]

Why a more expensive esp32 for merely open/close/batt status? Why not a $3 Esp8266-01. I just don’t like seeing all the features of esp32 unused. I also suggest OTA on your code to make it easier to update. But overall, nice work

[Gad_Ofir]

you are right from a design perspective!

but i have one laying around and i have no clue what to do with it hhh
i was able to work with the ESP8266 but not a lot of luck with the 32
i take examples from online projects and most of them are for the 8266

also i think my ESP has a temp sensor built in so maybe i can integrate them both

[thisisIO (Michael)]

So i have got zwave stick and zigbee stick with corresponding sensors.
And what do u think?
All of them works maximal 6-7m from stick. They are not usable without addition router.

[thisisIO (Michael)]

Is there a ready product, wich i can buy without soldering?

[mhfalken (Michael Hansen)]

No, you will have to make everything your self, incl. PCB.
/Michael