I've integrated this doppler microwave detector to a raspberry pi 3 b+ and have been bench testing it -- and it works fine waving my hand in front of it.
I've now moved it to the area where it needs to be detecting and it doesn't seem to work through the window! It's a double pane window, and I'm standing in front of it moving. My foot is moving inches from the window and the detector leaning against the window. The sensitivity is set all the way up to just below where it triggers constantly with no motion nearby.
I don't understand --- my understanding is this sensor should work through walls and glass.
Even using the lower frequency 10 GHz spectrum means that 5G coverage would only exist inside of untreated glass windows, but likely nowhere else inside of a building.
What the heck is untreated glass?
Is it possible I have a defective unit? (Purchased locally through Jameco.)
...just to make sure also I have the orientation right -- the most sensitive side is NOT the side with the metal box, but the opposite side. Which orientation also has the widest spread? The card positioned in portrait or landscape?
Is the power output just not strong enough for my needs? Is there a better solution/product?
- Working Voltage: 5V + 0.25V
- Working Current (CW): 60mA max., 37mA typical
- Interface: Gravity 3-Pin interface（Digital）
- Size: 48.5x63mm
- Detection Distance: 2-16M continuously adjustable
- Emission Frequency: 10.525 GHz
- Precision Frequency Setting: 3MHz
Output Power (minimum): 13dBm EIRP
Harmonic Emission: < -10dBm
Average Current (5%DC): 2mA typ.
Pulse Width (Min.): 5uSec
- Load Cycle (Min.): 1%
- Sensitivity:(10dB S/N ratio)
- 3Hz to 80Hz Bandwidth: 86dBm
- 3Hz to 80Hz Bandwidth Clutter: 10uV
- Antenna Gain: 8dBi
- Vertical 3dB Beam Width: 36 degrees
- Level 3dB Beam Width: 72 degrees
Edit: Ah, this is possibly based on the HB100, which has more detailed specs.