Deactivate wifi for a certain time

ESPHome
1

Hi,

I want to make a sleep training-clock for my daughter and want to check 1 or 2 times a day for the hour when the alarm should go off. Because it’s in the bedroom, I want to disable the wifi for the most of the time. The internal clock should stay working so that’s why no deep sleep is wanted.
’
I tried with following code every

interval:
  - interval: 15s
    then:
      - lambda: |-
          ESP_LOGD("main", "Wifi turned off");
          WiFi.disconnect(); 
          delay(1000);
          WiFi.mode(WIFI_OFF);
          WiFi.forceSleepBegin();
          delay(100);

This works but every time this happens:

[16:54:59][D][main:205]: Wifi turned off
[16:54:59][W][wifi_esp8266:394]: Event: Disconnected ssid=‘’ bssid=B4:FB:E4:91:3D:15 reason=‘Association Leave’
[16:55:00][W][wifi:100]: WiFi Connection lost… Reconnecting…
[16:55:00][W][wifi:495]: Restarting WiFi adapter…
[16:55:00][I][wifi:194]: WiFi Connecting to ‘’…
[16:55:00][W][wifi_esp8266:191]: wifi_apply_hostname_(clock_test): lwIP error -16 on interface st (index 0)

And the wifi connects again.

Has somebody an idea how to tackle this problem? Of where I can look for the solution?

2

Esphome is dependent on wifi, unless in deep sleep.

3

Thank you for the feedback. It did me think and … .

I’ve found following. When I go for a short time in deep sleep with WAKE_RF_DISABLED then the wifi is disabled until I do a new deep sleep with WAKE_RF_DEFAULT.

binary_sensor:
   - platform: gpio
     pin: 
       number: D2
       inverted: yes
       mode: INPUT_PULLUP
     name: "Turn off Wifi"
     on_click:
       then:
         lambda:  |-
           ESP_LOGD("main", "Wifi turned off");
           ESP.deepSleep(10, WAKE_RF_DISABLED);
           yield();
           WiFi.mode(WIFI_OFF);
           WiFi.forceSleepBegin();
           yield();
         
   - platform: gpio
     pin: 
       number: D3
       inverted: yes
       mode: INPUT_PULLUP
     name: "Turn on Wifi"
     on_click:
       then:
         lambda:  |-
           ESP_LOGD("main", "Wifi turned on");
           ESP.deepSleep(10, WAKE_RF_DEFAULT     );
           yield();
           WiFi.mode(WIFI_STA);
           yield();

Also important is to disable power_save_mode

wifi:
  ssid: !secret wifi_ssid
  password: !secret wifi_pass
  **#power_save_mode: HIGH**
  fast_connect: true
  reboot_timeout: 0s
  output_power: 10

Esphome will keep trying to connect to the wifi but the wifi-chip is disabled.

[10:27:27][I][wifi:194]: WiFi Connecting to ‘’…
[10:27:29][W][wifi_esp8266:391]: Event: Disconnected ssid=‘WLan’ reason=‘Probe Request Unsuccessful’
[10:27:29][W][wifi:458]: Error while connecting to network.
[10:27:29][W][wifi:495]: Restarting WiFi adapter…
[10:27:30][I][wifi:194]: WiFi Connecting to ‘’…

I’ll do some further testing and see if this works for my project.

4

For heaven’s sake, post your code properly. Three backticks before and after the code.

5

Better this way? My first time … .

6

That looks better :slight_smile:

I don’t know why you want to work around deep sleep though.

Are you scared your daughter’s brain is going to be fried or something?

7

Thanks Kristof, for sharing this code!
I have a similar need - I want to save battery power.
I have a PIR sensor that wakes up the ESP from deep sleep but I don’t want to activate WIFI on every wakeup, but only once in a while.
I’ll give it a try :slight_smile:

8

Necro post! But co-incidentally I saw this today

9

and if anyone is wondering what that means. It’s a little bit hidden.

There is a new feature in the next release to enable or disable WiFi.

10

yeah maybe I over assumed on reading ability :wink: