Page 127 - eBook_Proceedings of the International Conference on Digital Manufacturing V2

Fabrication and Characterization of a Low-Cost Piezoelectric using Rochelle
Salt for Energy Harvesting and Sensor Applications

Figure 46: Block Diagram of the “Design and Experimental
Evaluation of Solar Tracker Based Smart Flower PV
Panels System”.

When initial sunlight is detected by the LDR sensors, the
Arduino activates the TB6600 stepper motor driver, which
controls the opening sequence of the panel assembly along the
central axis. Simultaneously, the microcontroller energizes relay
modules that enable bidirectional operation of the linear servo
motor for precise tracking movements. The system incorporates
wind monitoring through a dedicated sensor that provides
rotational feedback to the Arduino. When the wind sensor detects
excessive rotational activity indicating dangerous wind
conditions, it triggers the Arduino to immediately command
system closure, returning all components to their protected default
position regardless of the current operational phase.

Experimental Evaluation

When the air was blown from the mouth, the floral assembly
closed and resumed at its initial default position. There was a time
delay which was given for 5 seconds. If the wind constantly blows,
the panels will only open when there was a period of 5 seconds
with no or less air, and will assume the tracking position. In the
presence of light, the whole function of tracking and safety
continues, but when there was no light, the initial position, which
was the default position, was attained. It should be noted that these

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