PIR am312
-
Does anyone have any experience with this sensor?
I exhausted my stock of panasonic PIRs and was looking for a replacement which was low powered and self contained (all components within the can) similar to the panasonics and ran across the am/hm PIR series from Senba Optics. The am312 is the only one I have seen in the wild - $13 on aliexpress but ~$2 from Banggood. I cannot find a non-chinese datasheet anywhere but some wholesalers have listed specs which look promising, specifically detection range and current.
Any thoughts?
Veralite UI5 :: IBoard Ethernet GW :: MyS 1.5
-
Does anyone have any experience with this sensor?
I exhausted my stock of panasonic PIRs and was looking for a replacement which was low powered and self contained (all components within the can) similar to the panasonics and ran across the am/hm PIR series from Senba Optics. The am312 is the only one I have seen in the wild - $13 on aliexpress but ~$2 from Banggood. I cannot find a non-chinese datasheet anywhere but some wholesalers have listed specs which look promising, specifically detection range and current.
Any thoughts?
-
Does anyone have any experience with this sensor?
I exhausted my stock of panasonic PIRs and was looking for a replacement which was low powered and self contained (all components within the can) similar to the panasonics and ran across the am/hm PIR series from Senba Optics. The am312 is the only one I have seen in the wild - $13 on aliexpress but ~$2 from Banggood. I cannot find a non-chinese datasheet anywhere but some wholesalers have listed specs which look promising, specifically detection range and current.
Any thoughts?
-
Hi,
Sorry to bump this old Thread.
But i thought i give some Info in case anyone stumbles on it via searching am312+mysensors like i did some Weeks ago.I used the banggood Module for a Battery Powerd Node.
At first it was running from 3xAAA Alkaline Batteries.
But after a Week Batteries where emtpy.So i had a detailed look at the Node.
The PIR Module has a 3V regulator on Board, which seems to be designed for 5V input.The Batteries only provided ~3,9V wich resulted in ~1,4V behind the regulator, but the Module was working properly.
So i decided to remove the regulator from the PIR Module and power it from 2 AAA Batteries (providing ~2,4V input).
Additionally i removed another 3,3V regulator i was using for the nrf24l01 Radio.
Now the Power consumption is down to ~0,2 mA while sleeping (ATMega328+NRF24l01+Pir Module) and ~15mA when awake.
Running without Problems since 2 Days.
-
Hi,
Sorry to bump this old Thread.
But i thought i give some Info in case anyone stumbles on it via searching am312+mysensors like i did some Weeks ago.I used the banggood Module for a Battery Powerd Node.
At first it was running from 3xAAA Alkaline Batteries.
But after a Week Batteries where emtpy.So i had a detailed look at the Node.
The PIR Module has a 3V regulator on Board, which seems to be designed for 5V input.The Batteries only provided ~3,9V wich resulted in ~1,4V behind the regulator, but the Module was working properly.
So i decided to remove the regulator from the PIR Module and power it from 2 AAA Batteries (providing ~2,4V input).
Additionally i removed another 3,3V regulator i was using for the nrf24l01 Radio.
Now the Power consumption is down to ~0,2 mA while sleeping (ATMega328+NRF24l01+Pir Module) and ~15mA when awake.
Running without Problems since 2 Days.
I just received my samples of the AM312 and ( @gohan as promised) my observations/ measurements. (which are not in line with @acp observations above)
- Rock stable. Even if I use the on-board regulator to also power a MySensors node it does not get into trouble (fires only when supposed to)
- The hold-time is as specified in the datasheet 2.3 seconds
- Power consumption: 14.2 µA! when idle 15.4 µA when active.
- These boards can handle anywhere between 3.3 and 12 V power (ldo on-board).
- I won't be using any of the small or modified HC-SR501 or similar BISS0001 based sensors anymore. These typically have 4 times higher power consumption/ very sensitive to all kinds of power and environment noise/ large/ but adjustable (can live with that and handle in software).
-
I just received my samples of the AM312 and ( @gohan as promised) my observations/ measurements. (which are not in line with @acp observations above)
- Rock stable. Even if I use the on-board regulator to also power a MySensors node it does not get into trouble (fires only when supposed to)
- The hold-time is as specified in the datasheet 2.3 seconds
- Power consumption: 14.2 µA! when idle 15.4 µA when active.
- These boards can handle anywhere between 3.3 and 12 V power (ldo on-board).
- I won't be using any of the small or modified HC-SR501 or similar BISS0001 based sensors anymore. These typically have 4 times higher power consumption/ very sensitive to all kinds of power and environment noise/ large/ but adjustable (can live with that and handle in software).
@AWI - Could you see what happened below 3.3v? Ie, using 2xAA ?
-
Thanks for your post! What type of detection range are you getting out of it? i.e. within what range can you reliably detect motion?
@NeverDie It looks like its in specification. My "lab" is not that big... I could easily detect around 5 meters through the open door ;-)
-
@AWI - Could you see what happened below 3.3v? Ie, using 2xAA ?
@sundberg84 I turned the voltage down to 2.6V and it was still fully functional. Did not test noise sensitivity (disassembled the test set-up) The sensor is specified to 2.7V, the LDO (HT-7530) has a typical voltage drop of 100mV in normal operation.
Seems to be very small (< 5mV) when Vin is below 3V.
Conclusion: looks good for 2AA alkaline.:ribbon: -
@NeverDie It looks like its in specification. My "lab" is not that big... I could easily detect around 5 meters through the open door ;-)
@NeverDie It looks like its in specification. My "lab" is not that big... I could easily detect around 5 meters through the open door ;-)
FWIW, when I click on your specification link, all I get is "Access Denied". Is it just me, or can anyone else here click through to it?
-
@NeverDie It looks like its in specification. My "lab" is not that big... I could easily detect around 5 meters through the open door ;-)
FWIW, when I click on your specification link, all I get is "Access Denied". Is it just me, or can anyone else here click through to it?
@NeverDie The "specification" is a link back into this forum (https://forum.mysensors.org/topic/6658/pir-sensors/18) so you should be able to access it...
-
@NeverDie It looks like its in specification. My "lab" is not that big... I could easily detect around 5 meters through the open door ;-)
FWIW, when I click on your specification link, all I get is "Access Denied". Is it just me, or can anyone else here click through to it?
@NeverDie Same here, access denied!
-
@hek @NeverDie @kontrollable My stupid mistake... :blush: I was referring to this from the datasheet Pir-AS312
-
Unfortunately, the link you posted (https://forum.mysensors.org/assets/uploads/files/1493990586841-pir-as312.pdf) reports file not found.
Since links aren't working, can someone upload the pdf of the datasheet to this thread as a file attachment?
[Edit: That's funny: After I posted the link, now when I click on it I'm now granted access! So, I'll attach it to this post now that I finally have it.]0_1494013513879_1493990586841-pir-as312.pdf
Hopefully others can now access the re-uploaded version. -
For Halloween, it would be pretty amusing to have the PIR turn on some eyeballs like this:
https://cdn-shop.adafruit.com/product-videos/1200x900/3356-05.mp4
especially if you had about 6 of them scattered about.
