In this page we describe the different sensors we use and how to build them.

SHT31-D Adafruit board

To measure Temperature and Humidity at 4 different height, we use 4 SHT31-D Adafruit board. The communication with the board is done with I2C. Because the board allows only two addresses, we toggle the address pin of the different board on after the other. If we want to communicate with…

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Decagon GS1 and EC5

To measure the soil moisture we are using the GS1 and EC5 from the Decagon company. Those two sensors measure Volumetric Water Content and return an analog value between 1V and 2.5V. GS1 Manual Due the power consumption of the moisture sensor, we developed a digital switch to power…

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