How often do you have to sample, for example, the soil moisture?

[HamidiMassinissa]

Given that we deal with constrained devices (both in terms of computational capabilities and power resources), what are the strategies that you will implement in order to meet these constraints?

This is one aspect, beyond the technicalities, that I want your team to reason about.

[lucky-hub]

Dear professor,
We decide to sample every 5 hours in spring and autumn and every 3 hours in summer and winter.

[HamidiMassinissa]

Thanks for your reply.

Dear professor,
We decide to sample every 5 hours in spring and autumn and every 3 hours in summer and winter.

What allow you to derive such assumptions?

I think that you have to dig a little bit further into the basis upon which you are making these kinds of assumptions. In other words, you have to specify, for example, if you are taking into account the type and the number of house plants that your system will host (each plant, depending on the season, has a different consumption model), maybe a model of the soil (its volume or type and the impact on absorption/retention of water), etc.
By instrumenting your solution with such models, you can sample more intelligently from the sensors. We will have time to discuss that during the next course.

[HamidiMassinissa]

You can check this additional resource http://www.fao.org/3/x0490e/x0490e04.htm (Introduction to Evapotranspiration).