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Last active May 20, 2024 01:01
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Making an outdoor motion sensor smart using a Shelly 1
/**
* I figured out you can fit a Shelly 1 inside the case of many outdoor motion sensors.
* Coupled with that fact that recently, Shelly added a feature to de-couple the switch from the relay
* so they act independently, makes this a great combo! Simply wire the output of the PIR motion sensor
* (the wire that normally goes to your outdoor light) to the switch input of the Shelly and wire
* the lightbulb to the L output of the Shelly. Then, in the Shelly app or directly via the devices webpage,
* select the button type as 'Detached Switch' and use the code below to make it work normally.
* Don't forget to adjust the daylight sensitivity to full daylight if you want the motion detection to work 24/7.
*/
#### AUTOMATIONS ####
automation:
- alias: Shelly PIR Auto
# initial_state: true
# hide_entity: true
trigger:
- platform: state
entity_id: sensor.pir_motion_sensor_status
condition:
condition: or
conditions:
- condition: sun
before: sunrise
- condition: sun
after: sunset
action:
- service_template: "{% if is_state('sensor.pir_motion_sensor_status' , '1')
%} light.turn_on {% else %}
light.turn_off {% endif %}"
entity_id: light.pir_motion_sensor
light:
- platform: mqtt
name: "PIR Motion Sensor"
state_topic: "shellies/shelly1-0x0x0x/relay/0"
command_topic: "shellies/shelly1-0x0x0x/relay/0/command"
availability_topic: shellies/shelly1-0x0x0x/online
payload_available: "true"
payload_not_available: "false"
qos: 2
payload_on: "on"
payload_off: "off"
retain: false
optimistic: false
## SENSORS ##
sensor:
#### Status of Shelly switch input for PIR ###
- platform: mqtt
name: "PIR Motion Sensor Status"
state_topic: "shellies/shelly1-0x0x0x/input/0"
@craigcurtin-dev
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craigcurtin-dev commented Jul 6, 2023 via email

@xbmcnut
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xbmcnut commented Jul 6, 2023

For reference, I just popped a Shelly 1 PM on the bench with just a 230V AC supply and unloaded, the SW input measures 126V AC.

@craigcurtin-dev
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craigcurtin-dev commented Jul 7, 2023 via email

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