Solar power cell is are renewable CO2-free power source that convert Sunlight into Direct Current (DC) electricity. Solar irradiation is the power per unit area received from the Sun in the form of electromagnetic radiation, and is typically expressed in watts per square meter (W/m²). This data is used to determine the potential for solar power generation, and it helps in designing and optimizing solar panels and other solar energy systems.
The simplest way to measure solar radiation is to connect a low value resistor in parallel with the solar cell and measure the voltage drop across the resistor.
The sun provides more than enough energy to meet the whole world’s energy needs, and unlike fossil fuels, it won’t run out anytime soon. Solar power cell is are renewable CO2-free power source that convert Sunlight into Direct Current (DC) electricity. Solar irradiation is the power per unit area received from the Sun in the form of electromagnetic radiation, and is typically expressed in watts per square meter (W/m²). This data is used to determine the potential for solar power generation, and it helps in designing and optimizing solar panels and other solar energy systems.
The simplest way to measure solar radiation is to connect a low value resistor in parallel with the solar cell and measure the voltage drop across the resistor.
The current sensor module utilizing hall-effect principle which voltage is produced from the movement of current within the region of magnetic field. The voltage produced by hall effect is directly proportional to the applied current making it suitable to estimate the applied current from the voltage sensed.
This project was originally presented on the Solarduino site and all credit goes to them. On the site you can also find detailed instructions as well as links where you can get all the components. I made minor adjustments to the code based on the components I had at the time of building the device. Instead of a 16x2 LCD Display Shield I use a standard 16x2 LCD Display with a separate Initialization Button.
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The device is extremely simple to make and consists of only a few components:
- Arduino Nano microcontroller board
- Solar Cell (preferably with a voltage of 0.5V and a short-circuit current of 0.5 to 1 A) - If we do not have information about this value from the manufacturer, we can determine it with the following procedure: We connect the solar cell directly to the ammeter, and point it in the direction of the sun so that the light falls on it at an angle of 90 degrees. The current that is read at this moment is called Short circuit current. Then this value is entered into the code.
- ACS712 Current Sensor Module rated at 5A
- 16x2 LCD Display with I2C communication protocol
- Button
- and two resistors
The sensor is connected to the solar cell with relatively thick and short wires to avoid interference and losses. The voltage output of the board is connected to the power supply and the A1 analog input of the Arduino.
Now let's consider the way of working with the device as well as its functioning in real conditions.
Immediately after turning on the device, we need to cover the sensor and press the button, and after that, initialization and calibration of the sensor takes place, which lasts about 5 seconds, then the message "OFFSET DONE" appears briefly, so next we direct the cell towards the sun. Now, I will use this Lamp instead of Sun.
After that,...
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