Growing vegetables?
You might already know that it’s important to water the garden once in a while. Vegetables need a certain amount of water per week in order to grow.
How much water is enough and how much is too much?
Can you find out how much water your favorite vegetable needs in order to grow?
Let's grow tomatoes!
Build this Tomato-Meter.
It’ll tell you whether you need to water your tomato plants.
If you have time, build your own design.
Try your meter before calibrating it.
To check that everything works:
- Input your location
- Play the program and press the Left Button on the Hub to move the needle from left to right.
- Look on the Hub to find out how many degrees of motor rotation it takes to go from one end of the scale to the other.
- The number may vary slightly between models. Your Hub should display a value between 300 and 600 degrees.
- You can use the Absolute Value Block to make sure that the degrees of motor rotation is a positive value.
Show how much rain there will be today.
Insert a sheet of paper that’s been pre-printed with the tomato scale.
For each hour of the day, find a way to move the needle in proportion to the amount of rain that should’ve fallen.
The length of the scale on the paper is d=90 mm.
To indicate that it has rained 1 mm, you should rotate the motor like this:
60 mm of rain --> 450 °
1 mm --7.5 °
So your program could look like this:
Do you need to water the garden?
Extend your program to cover the whole week (7 days) and evaluate whether your tomato garden will get enough rain.
Tomatoes need about 50 mm of rain per week to grow successfully.
Now, display temperatures.
What? You don't like tomatoes ?
Change the scale to display the temperature for the next 5 days and evaluate if there’s anything else you can plant.
Seeds only grow when the temperature is right for them to germinate.
Find out which seeds can germinate at which temperatures.
Think about how you did.
What did you do well? Is there something you could’ve done better?
Now you can use this life hack to grow your love of veggies!