Very interesting… How do you monitor flushing the toilet? What kind of sensor do you use…?
Currently it is not installed but I think an aqara door and window sensor should to the job.
The sensor will be opened, two reeds installed in parallel instead of one. The magnets will be attached at the toilet button plate.
I do not know how it works at your home, ours look like that:
O.K. You have build-in wall system… In my case all is ceramic and outside (old fashioned type)…
Very interesting. My region only have this version of the Glade and I have search the net to find one post that said it is not possible to quite challenging to to be smart. I used a relay to intercept the power. Where it turns on for a 10 seconds, spray and shut off. Works great, but it still uses the battery.
I would imagine my unit version would still work with your setup since it does have a motor? The little issue I would run into is that the unit is quite small and I will need to mount everything outside.
I think it should be possible.
Not sure which motor is used (could also be 1.5V).
First you should measure the voltage on the motor when spraying.
DRV8833 can operate with 3-10V.
I’ve found the post. The shell is different but the internal looks the same down the the pc board. The post said the motor to be 2.5v.
Hey there,
alternative approach: I’ve hacked an Air Wick Freshmatic. The 3D printed cover houses the ESP, which switches the device on and off by acting as a AA battery. The device releases one spray 15 seconds after the power was connected. Assuming this delay is acceptable to you the electrical solution and further HA automation is rather simple. Works perfectly in two bathrooms for the last two years. 
Happy to share details and code.
2 Likes
Very clean setup. For this particular Air Wick model without converting it to smart, how does it activate?
For my model, it spray once motion is detected AND every 30 minutes( something like that) throughout the day whether it detects motion or not. Marketing scheme to make you constantly buy the refills.
This particular model sprays 15 seconds after activated, then every 30min or so. This initial spray is what made this clean setup possible. From Home Assistant I simply turn the device on when no one is in the room and turn it off some time after. If you ignore the 15 seconds you could say I have direct control of it spraying.
Here’s a simplified copy of my rules.
On:
- trigger:
- platform: state
entity_id: binary_sensor.bathroom_door
to: "off"
for:
seconds: 5
condition:
- condition: state
entity_id: light.bathroom
state: "off"
action:
- service: switch.turn_on
entity_id: switch.airwick
Off:
- trigger:
- platform: state
entity_id: light.bathroom
to: "on"
- platform: state
entity_id: switch.airwick
to: "on"
for:
minutes: 30
condition:
- condition: state
entity_id: switch.airwick
state: "on"
action:
- service: switch.turn_off
entity_id: switch.airwick
No magic on the ESP either. It’s running standard Tasmota with one “Switch” GPIO.
Hey Daxi,
This is great, thank you so much for sharing. I’d love to see more pictures of the inside as well as the reassembled Air freshener. For example, where does the USB cable enter the air freshener?
Thank you in advance!
@rodri2566: Project is updated and pictures of the final air freshener added:
- Added spray counter as readonly data
- Added reset button to set spraycounter back to 0
- Changed timings for glade cans (previously worked fine for airwick cans but not glade cans)
- Spraying logic moved to a script
- Avoiding multiple script executions by the button which avoids motor stress.
- Moved ESPHome YAML to its own file
Thank you so much for sharing @Daxi . It’s a very elegant solution, both in terms of hardware as well as software.
Hey Daxi.
Added a lock to your code at the end of 2400 sprays and the presence of a spray in the can.
script:
- id: do_spray
then:
- if:
condition:
lambda: 'return id(spray_counter).state < 2400 ;'
then:
- number.increment: spray_counter
- component.update: spray_counter
- fan.hbridge.brake: spray_motor
- fan.turn_on:
id: spray_motor
speed: 80
direction: forward
- delay: 350ms
- fan.hbridge.brake: spray_motor
- fan.turn_on:
id: spray_motor
speed: 80
direction: reverse
- delay: 200ms
- fan.hbridge.brake: spray_motor
- fan.turn_off:
id: spray_motor
- delay: 500ms
sensor:
- platform: template
name: ${friendly_name} ${friendly_suffix_counter}
icon: mdi:counter
id: spray_counter_template
state_class: measurement
unit_of_measurement: ""
accuracy_decimals: 0
lambda: |-
return id(spray_counter).state;
update_interval: 1s
on_value:
- if:
condition:
- lambda: |-
return id(spray_counter).state <= 2399 ;
then:
- text_sensor.template.publish:
id: ballon
state: "The balloon is ok"
- if:
condition:
- lambda: |-
return id(spray_counter).state >= 2400 ;
then:
- text_sensor.template.publish:
id: ballon
state: "empty balloon"
text_sensor:
- platform: template
name: ${friendly_suffix_button_spray} Ballon
icon: mdi:spray
id: ballon
update_interval: 60s
If it is not, change the GPIO pins at forward and reverse pin.
I’ve received all my parts and have done soldering. When I test the motor, it is turning the opposite direction. I am confused of what to change as I have tried a couple of ways, but the motor does not change direction.
I have tried swapping the gpio pins on the d1 mini. Change the pin id labels in the config file.
You can change the direction by changing the pins in the yaml and reinstall the firmware.
Original part:
output:
- platform: esp8266_pwm
id: motor_forward_pin
pin: GPIO4
- platform: esp8266_pwm
id: motor_reverse_pin
pin: GPIO5
Swapped pins:
output:
- platform: esp8266_pwm
id: motor_forward_pin
pin: GPIO5
- platform: esp8266_pwm
id: motor_reverse_pin
pin: GPIO4
so strange. Swapped the pins as you suggest above, but not change in direction.
this is my config:
substitutions:
devicename: lr-airfreshener
friendly_name: LR Airfreshener
friendly_suffix_counter: Spray counter
friendly_suffix_button_spray: Spray
friendly_suffix_button_reset: Reset spray counter
esphome:
name: $devicename
esp8266:
board: esp01_1m
logger:
api:
password: !secret ota_pass
ota:
password: !secret ota_pass
wifi:
ssid: !secret ssid3
password: !secret ssid_pass
fast_connect : true
manual_ip:
static_ip: 192.168.1.119
subnet: 255.255.255.0
gateway: 192.168.1.1
output:
- platform: esp8266_pwm
id: motor_forward_pin
pin: GPIO5
- platform: esp8266_pwm
id: motor_reverse_pin
pin: GPIO4
fan:
- platform: hbridge
id: spray_motor
name: ${friendly_name} Motor
pin_a: motor_forward_pin
pin_b: motor_reverse_pin
# enable_pin: motor_enable
decay_mode: slow
internal: true
number:
- platform: template
#name: ${friendly_name} ${friendly_suffix_counter}
icon: mdi:counter
id: spray_counter
restore_value: true
update_interval: 30s
min_value: 0
max_value: 3000
mode: box
step: 1
optimistic: true
internal: true
sensor:
- platform: template
name: ${friendly_name} ${friendly_suffix_counter}
icon: mdi:counter
id: spray_counter_template
state_class: measurement
unit_of_measurement: ""
accuracy_decimals: 0
lambda: |-
return id(spray_counter).state;
update_interval: 60s
- platform: wifi_signal
name: ${friendly_name} wifi signal
update_interval: 15s
# - platform: adc
# pin: A0
# name: '${friendly_name} illuminance'
# unit_of_measurement: lux
# update_interval: 60s
# filters:
# - lambda: |-
# return (x / 10000.0) * 2000000.0;
binary_sensor:
- platform: status
name: ${friendly_name} status
button:
- platform: template
name: ${friendly_name} ${friendly_suffix_button_spray}
id: btn_spray
icon: mdi:spray
on_press:
then:
if:
condition:
not:
script.is_running: do_spray
then:
script.execute: do_spray
- platform: template
name: ${friendly_name} ${friendly_suffix_button_reset}
icon: mdi:restart
on_press:
then:
- number.set:
id: spray_counter
value: 0
script:
- id: do_spray
then:
- number.increment: spray_counter
- component.update: spray_counter
- component.update: spray_counter_template
- fan.hbridge.brake: spray_motor
- fan.turn_on:
id: spray_motor
speed: 80
direction: forward
- delay: 350ms
- fan.hbridge.brake: spray_motor
- fan.turn_on:
id: spray_motor
speed: 80
direction: reverse
- delay: 200ms
- fan.hbridge.brake: spray_motor
- fan.turn_off:
id: spray_motor
- delay: 500ms
Strange.
The motor moves in both directions but the opposite direction, right?
Could you make a picture of your wiring?
Overall of how this Glade air freshener looks like.
brown/purple wire → IN1/IN2
The red/white single set wires go to drv8266 vcc/ground.
Brown/gray → motor
Hey guys,
just out of curiosity and because someone might have missed it. I did show my solution to this problem a couple of responses earlier in this thread. It is a fully satisfying technical solution with minimal effort.
Why do you guys bother to go through massive rebuilds of the devices internals? Is it only because you already have your other air freshener model at home and it wouldn’t work that way? The Air Wick Freshmatic model I own costs 5-10€ and the modifications are straight forward 
The wiring should be ok.
At the picture with the dc motor, I see a red an black wire. Not sure if they are connected to the motor or not.
The motor should be only connected to the DRV board.
@ThomDietrich yes, there are multiple solutions.
The reason why I was using my approach was because of full control. For the Airwick, I would prefer your solution.
Not everybody has the same tools like a 3D printer.
Isn‘t it the nice wonderful part on open source and communities? You get different ideas and solutions and you can pick that one you want. 
My solution is only one, not intended to be the best but one way you can do it. For me it is and was fun to get a little bit of deep dive into dc motors and how to control it with ESPHome. Learning by doing.