Uploaded March 2021 | Updated September 2026, 2 weeks ago

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Arduino | Arduino Line Follower Robot with 8 Line Sensors using Multiplexer and PID Controller.

Software used in this project :
- Arduino IDE (I am using version 1.8.9)
- Notepad++ (I am using version V7.7.1)

Modules and components used in this project :
- Arduino Uno
- 5mm Super Bright LED (8 pieces)
- 3mm photodiode (8 pieces)
- 4051 Multiplexer IC
- 330 ohm resistors (8 pieces)
- 4.7K (4K7) ohm resistors (8 pieces)
- L298N DC Motor Driver
- DC Motor (2 pieces)
- OLED 128x64
- Dupont jumper cable
- 18650 batteries (2 pieces, assembled in series) or you can also use a 9V battery

Download the source code and installation image here : drive.google.com/file/d/1T8sPxqVEdkMSfweCmmfK9VK1mGNPYo-h/view?usp=sharing

The code file is saved in the .rar file format. I created a .rar file using Winrar V5.50, so to extract it, make sure you use the same version of Winrar that I use or the latest version or use the winrar extractor online.

Sorry if my English is confusing, I use an online translator.

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For other video tutorials on this channel, please see this playlist:

- Basic4Android (B4A) Tutorials : youtube.com/watch?v=-BIq32-qEgA&list=PLnXsmScWzcm6RVlhPM7qg_OJ2N8OpV99d
- Electronics Tutorials : youtube.com/watch?v=rLdsWt6EP6w&list=PLnXsmScWzcm766h5Dn4AJjbJRzDfCPh4h
- Arduino Tutorials : youtube.com/watch?v=A3_EBZqCG5s&list=PLnXsmScWzcm48hvcTTRAUFcP5Fjd4u8cS
- Great Cow Basic Tutorials : youtube.com/watch?v=orHrLmEvp0o&list=PLnXsmScWzcm7xejzacm5cKJMIh_tXXxN8
- Bascom Avr Tutorials : youtube.com/watch?v=JYKSkNQq9eM&list=PLnXsmScWzcm6F9gX1wYenqjKdqVSM7d6B
- VB .NET Tutorials : youtube.com/watch?v=Sy2vjWO0ydM&list=PLnXsmScWzcm4g8AWEJ6WXVUOBh_cWF5_z
- LoLin NodeMCU V3 ESP12E ESP8266 Tutorials : youtube.com/watch?v=8jMr94B8iN0&list=PLnXsmScWzcm5MERfTvcUNKsYhOUGKe3-V

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Download Arduino IDE : arduino.cc/en/Main/Software
Download Fritzing : fritzing.org/download
Download Notepad++ : notepad-plus-plus.org/downloads
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Reference :
- Line Follower Robot - PID Control - Android Setup : create.arduino.cc/projecthub/mjrobot/line-follower-robot-pid-control-android-setup-e5113a
- Arduino Store int into EEPROM : roboticsbackend.com/arduino-store-int-into-eeprom
- 74HC4051_8-Channel_Mux_Breakout : github.com/sparkfun/74HC4051_8-Channel_Mux_Breakout/blob/master/Firmware/Mux_Analog_Inputs/Mux_Analog_Inputs.ino
- TUNING KONTROLER PID LINE FOLLOWER : fahmizaleeits.wordpress.com/2010/08/24/tuning-kontrol-pid-pada-robot-line-follower

and from several other sources.
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Music Background:

Anno Domini Beats | Drop
Artist: Anno Domini Beats
Title: Drop
Genre: Hip-Hop & Rap
Mood: Sad
Source: Youtube Audio Library

Waited (instrumental) by RYYZN soundcloud.com/ryyzn
YouTube : youtube.com/watch?v=brjYK6yNyvU
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Present by Ikson soundcloud.com/ikson
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Music : Quiet Night by Tokyo Music Walker
Stream & Download : fanlink.to/quiet_night​
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Dreams by Markvard soundcloud.com/markvard​
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Free Download / Stream: bit.ly/-dreams-​
Music promoted by Audio Library youtu.be/A5tF6gRJ86s
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