Build a bot
that hunts tape.

Traxia'26 is a hands-on build: chassis, IR sensors, motor driver, and the code that keeps two wheels on a black line. Not a talk. A working machine on the floor.

FormatTwo-day hardware lab
MachineDifferential-drive LFR
You leave withA tuned control loop

Steer the chassis.

Move your cursor over the board. The chassis follows the nearest point on the line, just like a real line follower.

Sense → decide → drive

The line is the only map.

A line follower is not magic. It is a tight loop running a few hundred times a second: sample the sensors, pick a heading, push PWM. Miss a threshold and the bot walks off the tape. That is the lesson.

01
IR array
Reads black tape vs white board. Contrast is the whole problem.
02
MCU
Turns sensor bits into left/right PWM. This is the brain you flash.
03
Driver
L298N (or similar) takes logic and feeds the motors real current.
04
Wheels
Two motors, two speeds. Turn by making one side slower.

Event timeline

Two days. One faster bot.

DAY1

Build the base

Learn

Understand the components, the line-following concept, and the code that makes the bot work.

Build

Assemble your bot with the provided components and get hands-on experience wiring the complete system.

Tune

Improve your code, remove inefficiencies, and tune the control loop for smoother, faster tracking.

DAY2

Race day

Race

Bring your updated or enhanced code, put your bot on the track, and compete with other teams.

Entry slip

Take a chassis home in your head.

Fill the slip and submit your details. We'll send a confirmation email after registration. Emails from

Build a botthat hunts tape.