The embedded software design the embedded software is the piece that will be embedded in the hardware arduino uno to control and monitor the solar tracker test bench.
Solar tracker using arduino and servo motor.
Four ldrs and four 100kω resistors are connected in a voltage divider fashion and the output is given to 4 analog input pins of arduino.
Photovoltaic powers the solar tracker no external source needed.
Tact switch button resistors 10k 3 nos.
The used servo motors are controlled by the arduino uno board via 3 wire electrical cable as shown in fig.
If you are going to be installing the solar tracker permanently then you may want to solder the resistors and ldrs together so that they cannot come loose.
The servo is controlled through one of the arduino s pwm outputs.
5 to 12 volt power supply.
The pwm inputs of two servos are given from digital pins 9 and 10 of arduino.
The sensors are connected in series with 10 k ohm resistors.
Similarly connect the gnd pin from the arduino to a second lower horizontal row of the breadboard.
This solar tracker system uses the arduino uno board a servomotor 2 ldrs and 2 resistors to rotate the solar panel towards the sun or a source of light.
In this project an arduino nano is used which works as a controlling unit.
Following are the list of components required to design a solar tracker.
The circuit design of solar tracker is simple but setting up the system must be done carefully.
A dummy solar plate is attached in parallel to the axis of servo motor and both the sensors are kept on the dummy solar plate as shown in the figure below.
Two ldr s light dependent resistor are also connected to analog pins of the arduino.
It can also charge mobile phone.
If you are simply trying this project for fun then a breadboard is perfect.
Before reading the post please check the video from my channel it gives 70 of idea about the project.
Ldr 2 nos.
To track the sun i used four ldc sensors and arduino compares the data from them to rotate the panel in the direction with the most sunlight using two dc motors one for each axis and motor driver.
Arduino solar tracker with servomotor.
Extend the 5 volt and gnd rows to the upper horizontal rows of the breadboard respectively.
Since ldr is an analogue sensor they are connected to the analog pins a0 and a1 of arduino.
3 two wires for supply and one wire for pwm to control its positions.
This solar tracker uses two ldrs to measure the light or the resistance of the ldr changes according to the light.
Interfacing dual axis solar tracker arduino project using ldr servo motors.
The circuit diagram for the arduino based solar tracker using ldr servo motor is given below.
