Stable battery PIR Sensor

[Fredrik Carlsson]

Hello
I am busy building an burglar alarm for my home.
Because of this its important its a wireless system (to not go down during electrical failure in the house).

I wonder is there any stable good PIR sensor that works with battery?
I have sourced the forum but not really found anything. I have a couple of Sensebender micro boads lying around that I would prefer to use for this.

Its off course also important that there is no false triggers, because then it would be a very unreliable system.

[mfalkvidd]

http://forum.mysensors.org/topic/1088/battery-powered-pir and http://forum.mysensors.org/topic/2715/slim-node-as-a-mini-2aa-battery-pir-motion-sensor are battery powered pir sensors.

Here is the open hardware for the slim node.:
https://www.openhardware.io/view/10/My-Slim-2AA-Battery-Node

[m26872]

I've been away from home two weeks now and my two Slim Node Mini PIRs have delivered heartbeat messages every second day and no false trig.

[Fredrik Carlsson]

Wonderful!
Maybe I will try this design then. But I dont need them so small so will probably use the bigger PIR sensor in mine.
I will revert when I'm done

[Fredrik Carlsson]

@m26872 Hello, have you not used any voltage regultator for the pir sensor? You just give it direct connection to the batterypack?

[m26872]

@Fredrik-Carlsson Yes, for power economy (efficiency and dropout voltage). Whole node worked at 1.6V, as stable as before.

I think you should read about other PIR setups as well, I haven't yet tried the standard sized one myself.

[Fredrik Carlsson]

I will try tomorrow to do it without any voltage regulators together with a sensebender micro. I have the bigger pir sensor though, but I dont think its much difference on thoose. We will see.