Laverna is made with Qtrsensor 4.0.0 Library which is capable of following Black as well as White lines on contrasting backgrounds. This bot is extremely proficient since PID is interpreted with the motor speed by utilising the enable pins on L298N Module.

The code includes automatic calibration. Whether you wish for automatic or manual calibration is completely upto you, So make the necessary changes in the code which is absolutely easy since the code is documented properly. LCD Display is interfaced to know exactly what the state of bot is. Usage of the same is completely optional. If there's power issue, then try to interpret an LED indicator with the bot instead of the 16x2 LCD preffered over the code.

Qtrsensor 4.0.0 Library | https://github.com/pololu/qtr-sensors-arduino
Wire Library
Liquidcrystal | Optional-(If you're suing LCD Display) | https://github.com/arduino-libraries/LiquidCrystal
Button | https://www.arduinolibraries.info/libraries/button

Try to Download right from the Arduino IDE for the latest version and from the right source as inteded.
All Libraries are included in our repository but make sure that you either upgrade or use the latest ones.

Polulu QTR-8RC Reflectance Sensor

Cheap Dual Shaft BO Motor and Wheel (x2)

Castor Wheel

L298N Motor Driver
(Make Sure that the voltage regulator pins are not shorted. Then the input will limit to 5V)

Smallest Chassis we could find
(Prefer the Smallest One)

Arduino Mega
(Select any arduino board with sufficient pins)

LIPO 11.1V 2200 mAh
(2200 mAh isn't necessary but select the one with smaller size and weight, Even Li ION Cells are fine)

9V Battery for Arduino
(Small Lipo/Li ION is better, we have a ton of Non Rechargeable 9V Batteries as waste. So better use rechargeable ones or utilise long A to B cable if you have a laptop or portable power supply)

16x2 LCD Display with a Breakout Board

One Button Switch and Two Regular Switches
(Prefer Small Ones)

Abish Vijayan (https://github.com/abish7643/ | [email protected])

Abhijit M ([email protected])
Adith GM ([email protected])

This project is licensed under 3 Idiots Incorporations (3i INC.)