ESPHome PWM fan using a Wemos D1 mini lite

ventilation.yaml

# Controlling my Buva Qstream ventilation system using:
# * A Wemos D1 mini lite (an ESP8266 based board)
# * A Wemos power shield so I can power the Wemos from the ventilation units 12V supply.
# * A simple PWM to 10V convertor like this: https://www.cheaptech.nl/pwm-signaal-te-voltage-converter-1-3-khz-0-10-v-pw.html
# * The amazing ESPHome firmware tool: https://esphome.io
# * Home Assistant to tie it all together: https://www.home-assistant.io
#
# I used to use a Raspberry Pi and some Python code for this. See https://gist.github.com/SqyD/a927ab612df767a0cc892bcde23d025c
# The Wemos approach seems more stable and doesn't require external USB power.

esphome:
  name: ventilation
  platform: ESP8266
  board: d1_mini_lite

wifi:
  ssid: "SSID"
  password: "secret"

# Enable logging
logger:

# Enable Home Assistant API
api:

ota:

output:
  platform: esp8266_pwm
  pin: D3
  frequency: 5000 Hz
  id: pwm_output

fan:
  platform: speed
  output: pwm_output
  name: "Ventilation"
  speed:
    low: 0.05
    medium: 0.4
    high: 1

hey there,

great code. I am actually trying to do the same as I also have a Buva q-Stream ventilation system.
Can you explain how your connection looks like? Did you keep also the standard Buva controller (Buva Quali/Time)?
I would like to find a way to use both the standard controller and a solution for connecting the fan to my domotic hub (homeassistant).
Thanks

Giacomo

Hi, I no longer live in the apartment that had this but here is an old picture of the setup. https://twitter.com/SqyD/status/1176133163447410688?t=niyIRPJniDxM1B_2NNoSMA&s=19 The ha integration worked alongside the native controller. I hope it helps. Good luck. SqyD

…

On Sun, Nov 21, 2021, 21:30 Giaco ***@***.***> wrote: ***@***.**** commented on this gist. ------------------------------ hey there, great code. I am actually trying to do the same as I also have a Buva q-Stream ventilation system. Can you explain how your connection looks like? Did you keep also the standard Buva controller (Buva Quali/Time)? I would like to find a way to use both the standard controller and a solution for connecting the fan to my domotic hub (homeassistant). Thanks Giacomo — You are receiving this because you authored the thread. Reply to this email directly, view it on GitHub <https://gist.github.com/38d10391c2e21988406d2bdaec24f031#gistcomment-3969914>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AAMOZMLSYMYO5M7KYA4ALTLUNFJGVANCNFSM4LBFMR7Q> . Triage notifications on the go with GitHub Mobile for iOS <https://apps.apple.com/app/apple-store/id1477376905?ct=notification-email&mt=8&pt=524675> or Android <https://play.google.com/store/apps/details?id=com.github.android&referrer=utm_campaign%3Dnotification-email%26utm_medium%3Demail%26utm_source%3Dgithub>.

Thank you. I will give it a try then. If I see correctly from the picture, the first pin 1 has been put to ON, right?

I'm not 100% sure either as I never moved these pins and I cannot verify this anymore I'm afraid.

…

On Mon, Nov 22, 2021 at 7:25 PM Giaco ***@***.***> wrote: ***@***.**** commented on this gist. ------------------------------ Thank you. I will give it a try then. If I see correctly from the picture, the first pin 1 has been put to ON, right? — You are receiving this because you authored the thread. Reply to this email directly, view it on GitHub <https://gist.github.com/38d10391c2e21988406d2bdaec24f031#gistcomment-3970930>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AAMOZMMHHHHK7XJXYQFTMG3UNKDK3ANCNFSM4LBFMR7Q> . Triage notifications on the go with GitHub Mobile for iOS <https://apps.apple.com/app/apple-store/id1477376905?ct=notification-email&mt=8&pt=524675> or Android <https://play.google.com/store/apps/details?id=com.github.android&referrer=utm_campaign%3Dnotification-email%26utm_medium%3Demail%26utm_source%3Dgithub>.

I will see if I can find some info on internet.
thank you again

Giacomo

@SqyD
How are you able to use the custom speed setting on the fan? It looks like it was deprecated a while back:

Hi @poldim,

I no longer live in the appartment so I haven't use/maintained this integration for about 1,5 years now. Tt is very likely that it may be impacted by recent changes you mention. I don't have a solution I'm afraid.

@SqyD How are you able to use the custom speed setting on the fan? It looks like it was deprecated a while back:

@poldim It's pretty easy. Replace the whole speed section (line 38 - 41) in your screenshot with speed_count: 100.

@SqyD How are you able to use the custom speed setting on the fan? It looks like it was deprecated a while back:

@poldim It's pretty easy. Replace the whole speed section (line 38 - 41) in your screenshot with speed_count: 100.

Thanks, I was hoping to be able to use a few non linear set points for a ventilation fan of mine but it appears that's no longer an option. I'm going to play around with some template options that might allow it to work.

BTW, do you know the model of that ventilation you had in your old apartment?

BTW, do you know the model of that ventilation you had in your old apartment?

@poldim The model is mentioned in the first line of the comment of this yaml.