Kabelloser Bewegungsmelder PIR

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Ja, das ist ja mit den Milight Bridges genauso. Hab die auch alle in meinem EA8500 geblockt.

@mwittig said in Kabelloser Bewegungsmelder PIR:

@saxnpaule said in Kabelloser Bewegungsmelder PIR:

Mhh das relativiert die 12$ ja schon wieder.

Macht nur Sinn wenn man weitere Sensoren kauft, z.B. Tür/Fensterkontakte. Ich habe mir ein Set gekauft und teste es gerade ausgiebig. Leider funkt das Gateway fleißig in die AWS Cloud und nach China. Das lässt sich aber mit einem guten Router (z.B. Fritzbox) unterbinden.

Das Dumme ist dann aber, zumindest bei mir, dass z.B. die Temperatursensoren auch mal gern 0°C/100°C oder auch 0%/100% Luftfeuchtigkeit zurückgeben. Daher habe ich den Internetzugang gewährt.

@ortin said in Kabelloser Bewegungsmelder PIR:

Das Dumme ist dann aber, zumindest bei mir, dass z.B. die Temperatursensoren auch mal gern 0°C/100°C oder auch 0%/100% Luftfeuchtigkeit zurückgeben.

Oh, das ist interessant. Ich habe bisher nur das Gateway und Fensterkontakte zum testen. Der bestellte Temperatursensor steckt auf der Langstrecke noch im Schneesturm fest.

Ich habe kerui im Einsatz. Haben einen guten Erfassungsbereich und können per Batterien oder USB Kabel mit Strom versorgt werden. Das gute , man kann den Sensor auf eine Erfassung von 5 Sekunden oder 5 Minuten einstellen. Erhöht die Batterielebensdauer … Und für 7,50 Euro ein guter Preis.
Hier mal ein Link.
https://m.de.aliexpress.com/s/item/32249576391.html

I see a lot of interesting info in this topic, could we change to English please?

@germanuser said in Kabelloser Bewegungsmelder PIR:

Der User sweebee hat ja welche selber gebaut, doch leider reichen meine Englischkenntnisse nicht aus um das nachzubauen.

Kannst Du bitte eine Referenz auf den Post von Sweebee hinzufügen auf den Du Dich beziehst? Danke

@koffienl
Summary:

• The initial question was if someone who speaks German can help with building a motion sensor device along the lines of sweebee’s make posted earlier on this forum
• Various users suggested to use OOB solutions, like using Intertechno PIR-1000, Kerui P819 or Xiaomi Mi.
• Actually, the user is basically concerned about the price. Thus, the Kerui P819 Motion Sensor seems to be the best choice for him as far as I can see.
• Chris pointed out that the Kerui sensor allows for changing the induction interval from 5 seconds to 5 minutes to increase battery live. Actually, according to the manual the interval can be changed from 3 secs to 3 mins (may be some variation of the product throughout the lifecycle). https://img.ozdisan.com/ETicaret_Dosya/464641_7683691.PDF

Thanks!
I’m still doing some long term tests with several Chinese PIR’s overhere. I have one PIR on 433Mhz that has a jumper for setting timeout. Unfortunately the Chinese variant of ‘5 minutes timeout’ is 4 minutes in real life :P
I have 2 PIR’s (China) running on 315 Mhz and they work perfect. Unfortunately no timeout jumper, so if you would sit in range it will send every 10 seconds or so. Solved with various rules.

Some cheap Panasonic batterys (9v block battery) stopped working after 7 days (or about 450 hits). A expensive Duracell (X1604, 7800 mah) stopped working after about 2 to 3 weeks.
Strange thing is : I configured the Pimatc device as a PIR6 device. turns out : when Pimatic stops receiving the China PIR, the PIR doesn’t stop sending. It only transmits less different protocols (perhaps due to some more errors in the broadcast??).
When the PIR6 protocol is no longer in the broadcast, other protocols keep being send. Tested with a battery that wasn’t received anymore vs a brand new battery: there is similarity in the received protocols/unit/ID but a gew protocols are no longer received (or send?).
I have put in a battery that I had written off as ‘empty’ and added a protocol to the device (PIR2). I will continue to test how long this will work on the cheap battery.
I don’t care what protocol is being send, as long as it meets my requirements:

• At least 3 months with one battery
• 315 Mhz
• Different unit/ID for each PIR that I buy from China people
• 5 minutes timeout would be awesome, but haven’t found a cheap PIR that operates on 315Mhz with a timeout jumper

@koffienl Thanks for your findings so far. It’ll be great if you update on this when you have more results. @leader21 what are your findings wrt battery lifetime of the Kerui PIR?

@mwittig sorry for the late response. Well, actually I have two kerui pir running right now. One of them is powered via USB (the sensor has a USB port for powering), the other one is on batteries and up for 8 weeks now. Therefore relatively “fresh” install but still working. The question regarding battery life is not so easy to answer imho, since you need to consider how often the pir is triggered… But i guess the battery powered pir is triggered about 20 times a day. As said running for 8 weeks now.

I build a cheap pir sensor based on a HC-SR501 and a ESP8266 usb powered triggering a variable with the pimatic api over Wifi. In total it cost a €6,- when buying in China using ebay. I had to build in some false positives filters in the code and pimatic because pir sensors generate false positives due wifi radiation, power spikes and direct sunlight exposure.

I have purchased a Xiaomi gateway and one PIR sensor, just to see how that works out. Battery life seems to be very good with these small devices Currently waiting for delivery from China.
Big plus for these Xiaomi devices the battery status and lux (although the lux is not reported to be stable by users).

In the meantime I have the 2 China PIR’s on 315 Mhz running with the old/used battery’s. For both devices I changed the receiving protocol matching with that it’s sending when using a used battery.
It works, but I have the feeling the signal is weaker and I have to enlarge the retractable antenna to get good reception.
First test was with a PIR in the hallway, now I have added one to the livingroom, in just 5 days that PIR got 1790 hits, but this PIR has no timeout or whatsoever. If it sees movement it will send, regardless of the fact it did a send just 7 seconds ago.

Having PIR’s is so damn nice I love it when I wakeup in the morning and stumble down the stair and instantly see all the lights go on.

@leader21 Thanks for the feedback. I agree the battery life time depends much on the number of triggers and this way the acceptance depnds much on the usage setting. Like @koffienl pointed out a PIR in the hallway you may have a high frequency of triggers which may finish the battery in a few days/weeks. It may be ok though for a less frequenctly occupied space, e.g. the cellar. To be able to roughly compare battery it is required to count the number of triggers/hits like @koffienl did.

@koffienl Regarding Xiaomi gateway I am also testing this right now which may be a good choice if you use it for several smart home applications as sensors/actors are relatively cheap. My biggest dislike right now is the “chattiness” of the gateway which talks to several hosts on Amazon Cloud and China and produces a lot of traffic.
My advice is to block this traffic which is relatively easy to accomplish if your access router allows for blocking internet access for LAN devices. You may need to open it up again, however, if you need to pair new devices (haven’t tested this yet, however).

Good point about the cloud connections. I already read about the Xiaomi gateway and plan to do the developer trick so I can grab the UDP multicast in my local LAN en tell my router to forbid internet access for that MAC address.
I really don’t understand why such devices should talk to some server just to handle local traffic of devices.

I have a PIR GS - WMS08 Wireless PIR Motion Detection in the kitchen, where the 9V battery left after 8427 trips.

Try to see in the homeduino debug log if it’s not still sending some other protocols, just like my China PIR does

@leader21:

Hello,

I have also a Kerui P819 without a manual - it was a present. How can i get the right values (protocol, unit & ID)
for my device, in order to registrate it as a motion detector? I am an absolute beginner and i don’t know how to
read out the signals from the pir. BTW: Homeduino is installed and working (with switches from Elro and Brennenstuhl).

Best regards!

Und jetzt vorsichtshalber alles noch mal auf Deutsch, da fühle ich mich wohler

Ich habe auch den von @leader21 verwendeten Bewegungsmelder Kerui P819. Leider finde ich an diesem Gerät keine Einstellungsmöglichkeiten, wie beispielsweise DIP-Schalter bei Funksteckdosen, um den Gerätecode festzulegen.
Wie erhalte ich die benötigten Werte, also Art des verwendeten Protokolls, unit & ID, um den Kerui in pimatic
anmelden zu können? Homeduino ist installiert und wird erfolgreich zum Schalten von Funksteckdosen genutzt.

Ich wäre dir sehr dankbar, wenn du deinen Eintrag für deinen pir von Kerui hier posten und mir
erklären könntest, wie ich an die relevanten Anmeldedaten gelange. Habe da ein großes bewegungsloses Brett vorm
Kopp.

Vielen Dank im Voraus und beste Grüße

Habe es jetzt doch selbst hinbekommen, dass mir was angezeigt wird, wenn ich den Kerui nah genug an den Funkempfänger halte. Gestern klappte das komischerweise nicht. Muss jetzt nur noch aus den unzähligen Ergebnissen das beste/passende auswählen und hoffen, dass der ganze Spaß auch dann klappt, wenn sich der PIR ca. 10m entfernt vom Empfänger befindet.

Beste Grüße.

Do you have an external antenna attached to the receiver? What kind of receiver do you use?

I am using a cheap (1 EUR) pair of Tx/Rx modules. The transmitter is good, the super regenerative receiver
however is a bit crappy: without antenna the reach is maybe no further than a meter, but even with
a 17,2cm long antenna (a wire) it is marginally more, round about 2-3m, even with free line of sight.
Now I ordered a super heterodyne receiver (rx6).

@alter_knochen said in Kabelloser Bewegungsmelder PIR:

now I ordered a super heterodyne receiver (rx6).

Yes, that will work much better.