Skip to main content

59. Arduino Light Tracker V2.0

Hello everyone!
Today I am going to explain you about making the second version of my light tracker. This light tracker will move in both horizontal and vertical directions. You can read about the first version of the light tracker here. 

Hardware components used in this project

  • Arduino Uno
  • USB Type A/ B cable (for Arduino Uno)
  • Solderless Breadboard - Full+
  • Breadboard Power supply module - 3.3/ 5 V
  • Towerpro Micro servo motor (x2) - SG90
  • Photoresistor (x4) - also known as LDR
  • Resistors (x4) - 1kΩ
  • Male-to-Male Jumper wires

Tools and other supplies 

  • Soldering station/ iron
  • Solder
  • Double sided tape
  • 3D printed/ cardboard bracket

Setup



Your setup must look somewhat similar to those in the pictures above.

Connections

TowerPro Micro servo motor - SG90

  • (+) (Red wire) - 5V
  • (-) (Black/ Brown wire) - Ground (GND)
  • S (Yellow/ Orange wire) - D9 [Vertical movement]
  • S (Yellow/ Orange wire) - D10 [Horizontal movement]

Photoresistor

  • Bottom right - A0
  • Top right - A1
  • Bottom left - A2
  • Top left - A3

Coding

For this project, you will be needing the 'Servo' library by Michael Margolis. If you are new to using this library, feel free to follow this link: https://www.arduino.cc/en/reference/servo.
Include the library in your sketch and create servo objects by using servo syntax. Create global variables for your LDRs. 
Within void setup( ), use attach( ) function to declare the pin to which the servos are attached and set the initial position of the servos as 90 by using write( ) function. You do not have to use the pinMode() function to configure the pins of the LDR as INPUT because they are already connected to the Analog ports.
Within void loop( ), create local variables to read the analog values produced by the LDRs. Calculate the average values and store them in variables named 'top', 'bottom', 'left' and 'right'.
  • top = (topright+topleft)/2
  • bottom = (bottomright+bottomright)/2
  • right=(topright+bottomright)/2
  • left=(topleft+bottomleft)/2
If the value stored in the top variable is greater than that stored in the bottom variable, the vertical servo's position must increment by one. If it is the opposite, then the position must decrement by one.
If the value stored in the right variable is greater than that stored in the left variable, the horizontal servo's position must increment by one. If it is the opposite, then the position must decrement by one. 
Set a delay period of 100 milliseconds before completing the loop.
If anyone has any questions with the coding, please feel free to comment below or send me an email at arduinoprojectsbyr@gmail.com.

Final Look

If anyone has any questions, or suggestions, about this project, please feel free to comment below or send me an email at arduinoprojectsbyr@gmail.com.

Comments

Post a Comment

Popular posts from this blog

77. Controlling Micro servo Robotic Arm with MPU-6050 sensor module

 Hey everyone! I am back with an interesting project. Today, you will be learning about controlling a Simple 2 axis Robotic Arm, made from Micro servo motors, with an MPU-6050 sensor module. Please feel free to visit my previous blog post to learn about the MPU-6050 sensor module. Hardware components used in this project Arduino Mega 2560 - You could use any other Arduino microcontroller, but make sure you use an external power supply. USB Type A/B cable (for Arduino Mega 2560) MPU-6050 sensor module SG-90 Tower Pro Micro Servo motor (x2) Male-to-Male Jumper wires (x6) Male-to-Female Jumper wires (x5) Setup Schematic MPU-6050 sensor module VCC - 3.3V GND - Ground SDA - D20 (Arduino Mega 2560), A4 (Arduino Uno and Nano) SCL - D21 (Arduino Mega 2560), A5 (Arduino Uno and Nano) INT - D2 Micro servo motor (Roll) S (Yellow/ Orange) - D9 + (Red) - 5V - (Black/ Brown) - GND  Micro servo motor (Pitch) S (Yellow/ Orange) - D10 + (Red) - 5V - (Black/ Brown) - GND Coding As I alread...
Post a Comment
Read more

57. Using Blynk with Arduino Uno and ESP8266 WiFi module

Hello Everyone! Today I am going to explain you how to connect your Arduino Uno with Blynk using the ESP8266 WiFi module. I have already demonstrated you about connecting your Arduino Uno with Blynk app using the Ethernet Shield W5100 and this will be the second version of that project .  Hardware components used in this project Arduino Uno ESP-01 ESP8266 WiFi module USB to TTL converter Solderless Breadboard - Half+ Breadboard power supply module - 3.3V/ 5V RGB LEDs (x3) - Common Anode Resistors (x3) - 220 Ω Relay module - 5V single channel Male-to-Male Jumper wires Female-to-Male Jumper wires Setup Your setup must look somewhat similar to that shown in the images above. Connections ESP8266 ESP-01 wifi module GND - Ground GPIO0- Not connected GPIO2 - Not connected RXD - D2 TXD - D3 CH_PD - VCC - 3.3V RESET - Not connected VCC - 3.3V  *Note: Do not connect your ESP8266 ESP-01 wifi module with 5V. RGB LED - Common Anode Anode -...
2 comments
Read more

73. Limit the crowd to prevent the spread of COVID-19

Hey everyone! Today I am going to explain you about another interesting COVID-19 Arduino project. This is an automatic, effective and cheap method to limit the crowd in public places - such as shopping malls, supermarkets, offices, etc. - and public transport vehicles, such as buses and trains. The World Health Organization, WHO, has advised people to stay away from crowded places to protect themselves from the spread of Coronavirus disease. Even though people practice social distancing, it may not be effective when they are present in crowded places. I came up with this idea after I read the WHO guidelines about preventing the spread of COVID-19. Aim/ Objective This project is an automatic, cheap and effective way of limiting the crowd in public places and vehicles. Using a human to limit the number of people in a particular place would not be as effective as using an automatic system, due to lack of staff members in some areas. This prototype can be used in real-life situations by ...
8 comments
Read more