For this midterm, I made a terrarium monitor that track light intensity, temperature, and humidity. It is internet-connected (through Arduino Yun), and it stores all the data on an online data stream(data.sparkfun.com). It will also automatically send you an email if the condition of the terrarium is too poor (too hot/cold, too dark/bright, too dry/wet).
Adding different layers in the terrarium. First, add gravel and charcoal. Gravel can collect the excess water in order to prevent root rot; charcoal can purify excess water and absorb odor.
Add moss. The function of this layer is to prevent soil runs into the carbon and gravel layers.
Mix a decent amount of activated carbons into the potting mix. Add water into the mix. Add soil to the container.
Finally, add plants and arrange them in desirable position.
Final product – Terrarium Monitor
Email sent by the Arduino Yun if the conditions (inside the terrarium) are too harsh. I am using Temboo’s Gmail plugin.