Here’s my latest POE mmWave PIR Sensor. This one is only using the POE for power and not Ethernet. It uses a PoE FeatherWing, TinyS3, LD2410 and a EKMB1309113K. I forgot to get some assemly pictures.
Are you going to share the source files?
Also without 150mm separation or a permanent barrier between the mains and LAN cabling that contravenes the wiring rules in my country.
Yeah I think US NEC also requires physical separation of line voltage and low voltage devices when in the same wallbox. But aside that, good choice for the PIR.
Now we need to talk about those screws on your wall plate… 
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The mains is in a dual gang box and the low voltage is seperate. This is the orginal dual gang and then I 3d printed this: Low Voltage Add a Gang Mounting Bracket by justinrsmith23 - Thingiverse
What’s wrong with the screws?
It needs a bit more work I think but if anyone wants it I could share it. When I was testing the design I always pluged the Cat6 cable in after it was in the low volatage bracket and when I went to install it and try and fit it through the hole after the bracket was installed it was a pretty tight fight.
Looks nice. Please share how you integrated this with HA?
And what was the total cost of your build?
I used this libary for the LD2410: GitHub - rain931215/ESPHome-LD2410: ESPHome LD2410 mmWave Radar Sensor Custom Component
Here is the yaml:
esphome:
name: main-bath-occupancy-sensor
platformio_options:
board_build.extra_flags:
- "-DARDUINO_USB_CDC_ON_BOOT=0"
includes:
- header/ld2410_uart.h
on_boot:
priority: 600
# ...
then:
- lambda: |-
auto uart_component = static_cast<LD2410 *>(ld2410);
uart_component->setNumbers(maxMovingDistanceRange, maxStillDistanceRange, noneDuration);
esp32:
board: um_tinys3
framework:
type: arduino
# Enable logging
logger:
baud_rate: 0
# Enable Home Assistant API
api:
ota:
password: ""
wifi:
ssid: !secret wifi_ssid
password: !secret wifi_password
# Enable fallback hotspot (captive portal) in case wifi connection fails
ap:
ssid: "Main-Bath-Occupancy-Sensor"
password: !secret wifi_ap_password
captive_portal:
uart:
id: uart1
tx_pin: GPIO05
rx_pin: GPIO04
baud_rate: 256000 # Change this according to your setting
parity: NONE
stop_bits: 1
# debug:
# direction: BOTH
# dummy_receiver: false
# after:
# delimiter: [0xF8,0xF7,0xF6,0xF5]
custom_component:
- lambda: |-
return {new LD2410(id(uart1))};
components:
- id: ld2410
binary_sensor:
- platform: gpio
pin:
number: GPIO07
mode: INPUT_PULLDOWN
name: "Main Bath Room PIR"
id: pir_motion_sensor
device_class: motion
filters:
- delayed_off: 10s
- platform: gpio
pin:
number: GPIO21
mode: INPUT_PULLUP
name: "Main Bath Room mmWave"
id: mmWave_sensor
device_class: motion
- platform: template
name: "Main Bath Room Occupancy"
id: occupancy
device_class: occupancy
filters:
- delayed_off: 15s
lambda: |-
if ( id(mmWave_sensor).state or id(pir_motion_sensor).state) {
return true;
}
else if (id(mmWave_sensor).state == 0 and id(pir_motion_sensor).state == 0) {
return false;
}
else {
return id(occupancy).state;
}
- platform: custom
lambda: |-
auto uart_component = static_cast<LD2410 *>(ld2410);
return {uart_component->hasTarget,uart_component->hasMovingTarget,uart_component->hasStillTarget,uart_component->lastCommandSuccess};
binary_sensors:
- name: "Has Target"
- name: "Has Moving Target"
- name: "Has Still Target"
- name: "Last Command Success"
sensor:
- platform: custom
lambda: |-
auto uart_component = static_cast<LD2410 *>(ld2410);
return {uart_component->movingTargetDistance,uart_component->movingTargetEnergy,uart_component->stillTargetDistance,uart_component->stillTargetEnergy,uart_component->detectDistance};
sensors:
- name: "Moving Target Distance"
unit_of_measurement: "cm"
accuracy_decimals: 0
- name: "Moving Target Energy"
unit_of_measurement: "%"
accuracy_decimals: 0
- name: "Still Target Distance"
unit_of_measurement: "cm"
accuracy_decimals: 0
- name: "Still Target Energy"
unit_of_measurement: "%"
accuracy_decimals: 0
- name: "Detect Distance"
unit_of_measurement: "cm"
accuracy_decimals: 0
number:
- platform: template
name: "Max Moving Distance Range"
id: maxMovingDistanceRange
min_value: 1
max_value: 8
step: 1
update_interval: never
optimistic: true
set_action:
- lambda: |-
auto uart_component = static_cast<LD2410 *>(ld2410);
uart_component->setMaxDistancesAndNoneDuration(x,id(maxStillDistanceRange).state,id(noneDuration).state);
- platform: template
name: "Max Still Distance Range"
id: maxStillDistanceRange
min_value: 1
max_value: 8
step: 1
update_interval: never
optimistic: true
set_action:
- lambda: |-
auto uart_component = static_cast<LD2410 *>(ld2410);
uart_component->setMaxDistancesAndNoneDuration(id(maxMovingDistanceRange).state,x,id(noneDuration).state);
- platform: template
name: "None Duration"
id: noneDuration
min_value: 0
max_value: 32767
step: 1
mode: box
update_interval: never
optimistic: true
set_action:
- lambda: |-
auto uart_component = static_cast<LD2410 *>(ld2410);
uart_component->setMaxDistancesAndNoneDuration(id(maxMovingDistanceRange).state,id(maxStillDistanceRange).state,x);
button:
- platform: template
name: "Reboot LD2410"
on_press:
lambda: 'static_cast<LD2410 *>(ld2410)->reboot();'
- platform: template
name: "Turn on config mode"
on_press:
- lambda: 'static_cast<LD2410 *>(ld2410)->setConfigMode(true);'
- platform: template
name: "Turn off config mode"
on_press:
- lambda: 'static_cast<LD2410 *>(ld2410)->setConfigMode(false);'
- platform: template
name: "Get config"
on_press:
- lambda: 'static_cast<LD2410 *>(ld2410)->queryParameters();'
- platform: template
name: "Set baud rate to 256000"
on_press:
- lambda: 'static_cast<LD2410 *>(ld2410)->setBaudrate(7);'
- platform: template
name: "Set baud rate to 115200"
on_press:
- lambda: 'static_cast<LD2410 *>(ld2410)->setBaudrate(5);'
- platform: template
name: "Set baud rate to 9600"
on_press:
- lambda: 'static_cast<LD2410 *>(ld2410)->setBaudrate(1);'
FIrst thing I noticed viewing this post was the screws. Slots should all be vertical.
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Funny thing my father-in-law said the same thing. It’s been fixed now. 
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