I think you could do it a few ways. But I think it is best that when the lock is in its “resting state”, the door sensor is “closed” (near).
The lock state is basically inferred from the length of time that the sensor “is not closed” when it changes from closed to open, rather than the specific sensor state.
@ahzazou , @michel72 & @Klagio .
I’m about to get started on the hacked bluetooth button modification to complete my solution.
I would prefer to just wire it into my pi (don’t use a esp8266), but I understand this isn’t reliable.
So the esp8266 is the best option (with 10k resistor)?
Could you guys please comment on reliability you are achieving and confirm what you think is the best solution?
Yes that’s my experience: with the pi would work 50% of the time. With an ESP8266 its more 95% of the time. Remember to use a proper (equal or more then) 2A+ power supply for the ESP8266.
I recommend to use @ahzazou code or ESPhome. For ESPhome is this (you will need to change switch into lock somehow (I didn’t do it yet), its a bit better in the sense that it gives you also WiFi Signal strength and you can get notified if the ESP8266 disconnects from WiFi (with an automation, I did not do yet), and you can play, if you like, with ESP8266 LED, and you can make changes OTA.
esphome:
name: 12_door
platform: ESP8266
board: nodemcuv2
wifi:
ssid: "xx"
password: "xx"
manual_ip:
static_ip: 192.168.1.xx
gateway: 192.168.1.yy
subnet: 255.255.255.0
# Enable logging
logger:
# Enable Home Assistant API
api:
ota:
web_server:
port: 80
switch:
- platform: gpio
pin:
number: D0
inverted: yes
id: relay
- platform: template
name: "close_12_home_door"
icon: "mdi:gate"
turn_on_action:
- switch.turn_on: relay
- delay: 500ms
- switch.turn_off: relay
- platform: template
name: "open_12_home_door"
icon: "mdi:gate"
turn_on_action:
- switch.turn_on: relay
- delay: 500ms
- switch.turn_off: relay
- delay: 100ms
- switch.turn_on: relay
- delay: 500ms
- switch.turn_off: relay
sensor:
- platform: wifi_signal
name: "12 BLE Bridge WiFi Signal"
update_interval: 60s
- platform: uptime
name: "12 BLE Bridge Uptime"
text_sensor:
- platform: version
name: "12 ble bridge ESPHome Version"
I don’t understand it much (my limitation) , I guess I will need to make tests myself
Hi Klagio,
Can you please submit a picture with a closeup of the wiring/soldering you did for the Bluetooth button and the ESP8266?
I have them in enclosure and a bit hard to reach, butr there are clear photos in this thread
Here you go can’t be more clear then this
In the ESP in super simple.
Put the positive of the battery to the 3,3V, the negative to GND, and the other end of the resistor to D0 (D0 is GPIO16 in nodemcu) so also the blue LED will blink when you lock/unlock.
I am new to ESP8266 / ESP32.
Should I get the ESP32?
Any recommended online sellers? (Gearbest, Ali Express etc)
Both these below work. As for ESP32 you don’t need Bluetooth, actually could cause you interference (Wifi +2 Bluetooth all nearby, bad idea) avoid it. And you don’t need 36 GPIO, just 1 
Hello, your solution seems to be documented the best and I’m willing to give it a go and try on my lock. Can you please upload yaml file on your gut as well. I mean the part of configuration.yaml that you are using to control the lock.
Finally i found this video “The Hook up” explaining how can battery consumption can be lowered dramatically. https://youtu.be/2kLZ7DlP9KU would love to see this updated with lover power consumption in mind.
Thank you for your efforts.
Hi,
Summary of my implementation and consolidating some of this thread for others:
Use a hacked fob, ESP32 and ESPhome add-on for Hassio lock/unlock control: Do the hacked fob onto a ESP32/ESP8266 like some others to get Hassio lock/unlock control.
Use a Reed switch positioned within the lock for state tracking:
Some unique features of mine:
My challenges:
Only a thumb-turn on the inside for me, like in andreyxc 's video. Vertical is locked. Rotate 90 degrees clockwise to unlock (horizontal). Thumb turn width quite wide which meant I couldn’t just reverse the thing-me-bob. I had to build a custom coupling thingo. So quite a lot of modding for it to work on my door. I went through a few iterations, but I got there. See vid.
This was my first time using an ESP32 or similar. Total novice to that. ESPhome was pretty easy to get set up, instructions are pretty good. A few hiccups, but some restarts/power cycles seemed to have sorted it.
I cut my finger while whittling the custom coupler thingo from wood and walked bleeding down the street to get 4 stiches. Stuuupid😊.
The fob only work like 75% of the time? This is even using a spare one manually, the light flashes, but door lock doesn’t respond. The work around is in the script to check if the action was actually effective and try again if not. This actually happened in my vid, so you can see that in action.
Thanks to all those mentioned in the thread.
Video of it working: https://www.youtube.com/watch?v=6M4HUpGbGYk&feature=youtu.be
A quick vid more focused on the mod I made : https://www.youtube.com/watch?v=IV49bL67ZRQ&feature=youtu.be
Main materials for custom coupler:
For state tracking:
In your automation file:
- id: '1755' alias: Door was just unlocked trigger: platform: state entity_id: binary_sensor.door_window_sensor_158d0001bf8643 from: 'off' to: 'on' for: seconds: 1 action: - id: '1756' alias: Door was just locked trigger: platform: state entity_id: binary_sensor.door_window_sensor_158d0001bf8643 from: 'off' to: 'on' action:
For switch which gets it’s state from the automations (I preferred to use a switch template in the end, but you could use the template lock if you like)
switch:
- platform: template
switches:
smartlock:
friendly_name: "Smart Lock"
value_template: "{{states.automation.door_was_just_locked.attributes.last_triggered > states.automation.door_was_just_unlocked.attributes.last_triggered }} "
turn_on:
service: script.lock_door
turn_off:
service: script.unlock_door
icon_template: >-
{% if is_state('switch.smartlock', 'on') %}
mdi:lock
{% else %}
mdi:lock-open
{% endif %}
or for the template lock
- platform: template
name: smart lock
value_template: "{{states.automation.door_was_just_locked.attributes.last_triggered > states.automation.door_was_just_unlocked.attributes.last_triggered }} "
lock:
service: script.lock_door
unlock:
service: script.unlock_door
And the scripts to fire the ESPhome switches as per Klagios code, which re-fire a few times if they fail.
lock_door:
sequence:
- service: switch.turn_on
entity_id: switch.close_12_home_door
- delay: '00:00:03'
- condition: template
value_template: "{{states.automation.door_was_just_locked.attributes.last_triggered < states.automation.door_was_just_unlocked.attributes.last_triggered}}"
- service: switch.turn_on
entity_id: switch.close_12_home_door
- delay: '00:00:03'
- condition: template
value_template: "{{states.automation.door_was_just_locked.attributes.last_triggered < states.automation.door_was_just_unlocked.attributes.last_triggered}}"
- service: switch.turn_on
entity_id: switch.close_12_home_door
- delay: '00:00:03'
- condition: template
value_template: "{{states.automation.door_was_just_locked.attributes.last_triggered < states.automation.door_was_just_unlocked.attributes.last_triggered}}"
- service: switch.turn_on
entity_id: switch.close_12_home_door
unlock_door:
sequence:
- service: switch.turn_on
entity_id: switch.open_12_home_door
- delay: '00:00:8'
- condition: template
value_template: "{{states.automation.door_was_just_locked.attributes.last_triggered > states.automation.door_was_just_unlocked.attributes.last_triggered}}"
- service: switch.turn_on
entity_id: switch.open_12_home_door
- delay: '00:00:8'
- condition: template
value_template: "{{states.automation.door_was_just_locked.attributes.last_triggered > states.automation.door_was_just_unlocked.attributes.last_triggered}}"
- service: switch.turn_on
entity_id: switch.open_12_home_door
- delay: '00:00:8'
- condition: template
value_template: "{{states.automation.door_was_just_locked.attributes.last_triggered > states.automation.door_was_just_unlocked.attributes.last_triggered}}"
- service: switch.turn_on
entity_id: switch.open_12_home_door
Added: 2019-04-27
Made steampunk ESP32 case out of $3 solar light bulb from local crap-store and hung it near the door. I drilled a hole in the bottom for ventilation. Someone tell me if this is a bad idea. I like it! You can keep an eye on the flashing fob led and see the next feature.
Added visual LED indicator for locked/unlocked. From what I can see so far I can only do blue led on/off with what’s onboard my ESP32. Append this to Klagio’s early code under switch:
switch: - platform: gpio pin: number: GPIO2 inverted: yes id: led - platform: template name: "esp32 led off" icon: "mdi:lightbulb" turn_on_action: - switch.turn_on: led - platform: template name: "esp32 led on" icon: "mdi:lightbulb" turn_on_action: - switch.turn_off: led
#Toggle lock on xiaomi button long press - id: '17566' alias: Toggle Door Lock trigger: platform: event event_type: xiaomi_aqara.click event_data: entity_id: binary_sensor.switch_158d0001e145a5 click_type: long_click_press action: - service: switch.toggle entity_id: switch.smartlock
#Auto lock front door after the DOOR actually closes - id: '17567' alias: Auto Lock Door 15s trigger: platform: state entity_id: binary_sensor.door_window_sensor_158d00031b360f from: 'on' to: 'off' for: seconds: 15 action: - service: script.lock_door
Next up:
[Updated 2019-08-01]: I got this working using ESPHome and the same ESP32 that the fob is attached to, but the detection lag was too long to detect me as I apprach door. I went down a ‘Monitor’ path (find that thread).
It would be nice if the esp32 can be a somewhat dedicate device with a short scan interval so my Pi doesn’t get stressed out?
Update: I am super excited that the esp32 BLE scanner can see my Mi Band 3. Detecting these has been in demand and a big hassle for quite few people, so I’ll share how that goes in a few other threads if it is fruitful.
Monitor for reliability.
[Updated 2019-08-01]: It has been very solid! happy!
[Updated 2020-05-14]: Battery light just started flashing red. meaning I got an amazing 12 months from a single charge!
For the ones who have the vertical key and do not want to modify the lock. I used this mod, just cutting the key and solder it at 90 degrees.
Hi Guys,
did anybody else had the problem that the lock only could be paired to one fob ?
Thanks
I had a few different issues. Try resetting the fobs that won’t add. Hold down the the button until it flashes alternative colors, immediately release the button, and then push the button again. Then re-add. That helped with mine…
Thanks alot for the hint, but it didn’t helped . I think my problem comes from the Android app. After the first fob it gets stuck when I want to add another one . It never goes into the mode where it searches for a new key 
there is a beta version of the app, you may try that one
Thanks alot for the suggestion. Do you know how I can request access to the beta application ?
Yes, email them for support with your specific issue. They are pretty responsive and seem to know the fixes. Write really simply as I think it all goes through a translator.
I’m dumping my exchanges here in case it helps someone.
Thank you for quick response.
This fixed it 
.
From: cxj <[email protected]>
Sent: Tuesday, 23 April 2019 8:18 PM
To:######### 连骆鑫 <[email protected]>; [email protected]; [email protected]
Subject: Re:RE: Re:Issue setting up Sherlock S2
Intelligent key recovery factory settings: long press button until the traffic lights flashing alternately immediately release the button and then press the button to release.
Hello, please check your operation method is correct.
客服专员
陨石科技/售后部
厦门
------------------ Original ------------------
From: ########
Date: 2019年4月23日(星期二) 下午5:49
To: "连骆鑫"; "[email protected]"; "[email protected]";
Subject: RE: Re:Issue setting up Sherlock S2
Hello,
Now I have another issue.
I bought 4 Smart keys with my Sherlock S2.
2 were added, but then stopped working. The LED still functions as expected, but the door doesn’t respond. I tried to reset them by holding down the button, then I removed them from the app. But now I can’t add them back again. Maybe there is something you can reset on your side for the 2 faulty smart keys so I can use them again?
I was able to add a 3rd one that I hadn’t unboxed yet.
Can you help?
From: ############
Sent: Sunday, 17 March 2019 4:01 PM
To: 连骆鑫 <[email protected]>; [email protected]; [email protected]
Subject: Re: Re:Issue setting up Sherlock S2
Ok. Yes the device has disappeared from app which is good. I will reset and try to set up again.
From: 连骆鑫 <[email protected]>
Sent: Sunday, March 17, 2019 3:59:28 PM
To: ######## [email protected]; [email protected]
Subject: Re: Re:Issue setting up Sherlock S2
hello，
I have already helped you untie the success. You can restore the device to factory settings. Press and hold the function key 6S until the indicator light flashes red and green alternately
客服专员
陨石科技/售后部
厦门
------------------ Original ------------------
From: ########
Date: Sun, Mar 17, 2019 12:43 PM
To: "连骆鑫"<[email protected]>; "[email protected]"<[email protected]>; "[email protected]"<[email protected]>;
Subject: Re: Re:Issue setting up Sherlock S2
Thankyou.
I am using the most recent app but I’ll check again.
From: 连骆鑫 <[email protected]>
Sent: Sunday, March 17, 2019 3:40:19 PM
To: ########## [email protected]; [email protected]
Subject: Re:Issue setting up Sherlock S2
hello，
I can help you untie the device. You take a photo of the QR code in the battery compartment.
APP question you can see if the app store has an update。
客服专员
陨石科技/售后部
厦门
------------------ Original ------------------
From:
Date: Sun, Mar 17, 2019 12:34 PM
To: "[email protected]"<[email protected]>; "[email protected]"<[email protected]>;
Subject: Issue setting up Sherlock S2
When I tried to set up my Sherlock S2 the set up process failed.
I have tried reinstalling the app and resetting the device.
My lock shows as testing not complete but when I try to test it says it has been reset and needs to be reinstalled.
But it is not possible to remove the untested lock or reinstall the lock.
I think I have tried all options in the interface and nothing works.
This is very frustrating.
Maybe if you reset my account?
Video:
##Removed##…
Agreed, try to be as simple as possible
For those interested, I’m looking into, but struggling with fast arrival presence detection to open the lock.
