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Green light in the bathroom
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How I save water while showering🚿

  • December 25, 2020
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  • Klaas Schoute
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Hey hello, there I’m again with an update! In this blog I will come up with a number of updates that I’ve made in Home Assistant / my house, such as new hardware and I will show you a great idea how you could possibly save water while showering. But first, Blueprints!

📘 Blueprints

Recently it’s now possible to make blueprints in Home Assistant, with this you can create a pre-made automation that contains all the logic and others can easily import and use them as a basis for their automation.

  • An old pencil drawing of Don Quixote and Sancho Panza sitting on their horses, by Wilhelm Marstrand.
    Aqara opple – 6 way remote
  • An old pencil drawing of Don Quixote and Sancho Panza sitting on their horses, by Wilhelm Marstrand.
    Aqara D1 – 1 way remote
Open your Home Assistant instance and show the blueprint import dialog with a specific blueprint pre-filled.
Open your Home Assistant instance and show the blueprint import dialog with a specific blueprint pre-filled.

For the above devices I made a blueprint, the Opple 6 way is to control lights, with also dim and max / min brightness options. You can use the D1 to operate curtains, click on the name link to see all the details.

Neural TTS voices

Previously, Nabu Casa only supported a few languages through the TTS service tts.cloud_say, but that has changed since the release 2020.12. Due to some adjustments I made, it now supports all (at that time known) neural voices that are available via the Microsoft Azure platform.

Did you still use the standard Google TTS? Then it is definitely recommended to try the neural voices, because it really sounds much better!

🏠 My Home Assistant config

A lot has changed in my studio! I will list the coolest things for you 😉

Be aware of your water consumption while showering

Lately I had a lot of things in my head about how you could save on gas / water / power and that’s why I now come up with a nice little idea that I’ve worked out to save water while showering.

On average: people shower for 9 minutes and in monetary terms, you spend about 50 cents on water at a time, but what if we shorten the time to 5 minutes from now on?

Part 1: when is someone taking a shower?

To begin with, I had to figure out a way to detect someone in the shower. I previously solved this with a water leak sensor in the shower tray, but that’s actually not user-friendly at all. That’s why I now have a Xiaomi temperature / humidity sensor stuck quite high in my bathroom, based on a high humidity I could determine that someone is taking a shower.

Fortunately, I also have the advantage that when I leave the door open after a shower, the value drops again very quickly so the binary sensor status can be quite accurate.

Part 2: make yourself visually aware of how long you shower

  • RGB E27 light
    The new light
  • Red light district 😜

The next step is to indicate how long you are in the shower, for that I have chosen to replace my existing TRADFRI E27 lamp with an RGB light. Then I made 2 automations:

  • Show green light after 5 minutes of shower.
  • Warn me with a red light when I shower for 10 minutes.

For both options, the color is only displayed for 10 seconds, then the light returns to the previous situation. You can find the code here. Let it inspire you to new ideas and do share them with me.

Xiaomi Mijia light sensors

Recently I also received some new sensors and this time it’s the Xioami Mijia light sensors that I bought. Previously I used the sun position to switch the lights in the evening, to fine-tune that even more I now want to use these light sensors as a trigger for automations.

Currently I’ve built an option where the lights automatically switch on and off (source code) based on the LUX value, but if I temporarily don’t want this, for example when I’m asleep or away from home, this function will be automatically switched off or I can switch this manual via lovelace.


I wish everyone a merry christmas! 🎄🎅

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Klaas Schoute

Interaction technology (UX/UI) student who loves home automation, drones, open source projects and likes to take you on his adventure to the perfect smart student house.

Related Topics
  • bathroom
  • blueprints
  • Home Assistant
  • Lights
  • sensors
  • shower
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Author
Klaas Schoute
Interaction technology (UX/UI) student who loves home automation, drones, open source projects and likes to take you on his adventure to the perfect smart student house.
Recent Posts
  • It’s a long time ago June 3, 2022
  • First integration in Home Assistant! June 2, 2021
  • Blitzwolf LT11 with ESPHome March 11, 2021
  • How I save water while showering🚿 December 25, 2020
  • Is this going to be the future? November 4, 2020
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klaasnicolaas
Wat was het vandaag toch heerlijk weer 🌞  lange vaartocht gedaan van 4 uur en we zijn allebei behoorlijk verbrand #oeps #boat #sun #beautiful #day
Gezien ik zelf ook weer meer ben gaan vliegen, heb ik een goeie tas van @torvolofficial gekocht - 100% een aanrader!
Ledjes op je drone, altijd +1 😁
Vergeet niet te blijven "hydrateren" tijdens een online meeting 😉🧃 #meeting #online
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