samedi 11 juin 2016

Useful projects on Raspberry Pi - Smart Dehumidifier (Episode 101)

Model: Raspberry Pi 1 B+
Features: 4xUSB, 1xEthernet, HDMI

Today, like yesterday and the day before, I have been working on a little project that is very important to me.

Before I start writing about that project. To understand my point deeper, you need a little background.

My mother is a soapmaker. We make our own home-made artisanal soap, with Extra-Virgin Olive Oil, Virgin Organic Coconut Oil, and essential oils.

I help her out whenever I can of course :)
We make the soaps the old-fashioned way, and we leave the soaps to cure at least 2 months before actually using it. (cold-processed)
For the soaps to cure in optimal conditions, I recently bought a dehumidifier.

But how would I know when to turn the dehumidifier on or off ? What I needed was some kind of sensor. So my project's aim is to make a 'smart' dehumidifier assembly that has to :
- Detect the relative humidity in the room
- And turn on whenever the humidity levels are too high
- And off to save current of course :)

So here is my assembly:
1. 1x Raspberry Pi 1 Model B +
2. 1x DHT11 (humidity and temperature detector) -ebay cheap!
3. 1x Dehumidifier
4. 1x 5V 220V Relay -ebay cheap
5. 1x USB Wifi module -ebay cheap

The relay's job is to control the mains via the raspberry pi, so everything is automated and I don't need to bother about humidity anymore.

So, till now I have managed to make the detector work, and still waiting for the relay to arrive (yes i bought from china on ebay)

Its detecting the temperature (in degrees celsius) and relative humidity(in percent) and all this is done in real time!

I will blog about the project again when its done in a DIY fashion so that everyone can do it the easy way.

I have to admit, that all these little devices are serious fun !


- In case you want to take a look at our home-made soaps, feel free to visit
this link

- I'd love to get other's input on projects they would love to have in their homes (useful ones). 

- So please feel free talk about your useful project in the comment in the section below :)