AM312 with no delay

[halipte]

Hi! I bought five AM312 PIR-sensors but just realized that there is a delay from motion until action. Is there a similar PIR (same specification and size) but with no delay?

I would like to trigger the output as fast as possible when motion is detected.

Best regards

Halipte

[skywatch]

@halipte The microwave 'radar' modules seem to trigger pretty fast - With PIR it depends a lot on ambient temperature of the area the pir is 'looking' at and the temperature of the moving object.

[virtualmkr]

@halipte
Hi, have you tried these ones? HC-SR501 PIR
For me they work faster than the AS312.

For the AS312 I use this one:
Wemos PIR shield

[halipte]

@virtualmkr Hi, thanks! I haven´t tried that one. How much faster (approx) are they? If possible I would like to trigger the output immediately there is movement.

Regarding the Wemos PIR shield, how do you mean you use it? Together with the AM312?

Best regards

Halipte

[virtualmkr]

@halipte Yes, you are right. The AM312 is different from the AS312 which I use.
see: AM312 Datasheet and AS312 Datasheet
But both are looking similar. No additional parts are required. For the HC-SR501 PIR there are a lot of additional parts on the module PCB. So at the end I prefer the AS312 to keep my PIR sensor device small and simple.