The proposed IoT solution can be employed in various fields to connect devices or things to the internet.
Project tutorial by Saad Motahhir and Aboubakr_El Hammoumi
Open hardware/software test bench for solar tracker with virtual instrumentation.
This project presents a simple virtual instrument system based on LabVIEW and Arduino to characterize and monitor a PV panel.
Specifications of the mini Solar Panel:
Power 1.6 W
Voltage 5.5 V
Weight 47 g
A button created in the Cayenne dashboard has a role to switch between the two modes. When it is inactive, the manual mode is selected, otherwise automatic mode. Besides, a function is established in the Arduino code that allows recovering the state of the button. The LED in the system circuit reflects the state of this switch.
Therefore, for the controller to know the selected operating mode, we just need to test the state of the pin in which the LED is connected. For example, if the LED state is low, the controller will call the manual mode function to execute, otherwise, it will call the automatic function.
The used PV panel generates a voltage up to 5.5 V or more. Therefore, in this project, a voltage divider circuit, which also acts as a load, is realized to adapt this voltage to the Arduino analog input which is limited to 5 V.
But, you can simply use a voltage sensor to acquire the PV voltage.
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