Aravind is an ambitious farmer who wants to improve the yields from his farmland. While
looking for ways to improve the yields, he came across tech buzzword like the Internet of
Things. The irrigation system he wants to build contains servo motors that control the water
supply to the farm, based on the present humidity, temperature levels in the farm.
The irrigation system he wants to build contains servo motors that control the water supply to
the farm, based on the present humidity, temperature levels in the farm. Using sensor data,
Aravind wants to build a smart irrigation system that predicts how much water (in
percentage) should be supplied to his farm. Aravind also does not want to water the plants
during night-time.
However, Aravind is good at farming and does not have much experience building an IoT
system. So, build an irrigation system for Aravind using the IoT simulator at this link
(https://wokwi.com/projects/new/arduino-mega?template=arduino-mega) and design a farm
irrigation circuit using Arduino Mega board. Identify the required sensors needed to build the
irrigation system based on Aravind’s requirements from the list of sensors provided by the
simulator. The irrigation system should produce the correct signal (% of water supply) to
control the water supply depending on the temperature and humidity values. Use a servo
motor to control the water supply.
The farm irrigation system should contain four sensor units such that each unit sense
temperature and humidity values. These values will be provided to rule-based model as
shown in Table 1 on the Arduino board to predict the water flow in percentage. Then the
water flow percentage will be provided as input to the servo motor (Map the percentage
values with servo motor rotation 0? to 180?). The sensor values from each sensor unit should
control a servo motor. Also, display the % of water flow that is fed as input to servo motors
on an LCD (Refer to Figure. 1). The block diagram for the circuit schematic is shown in
Figure 2.