Tamiya 75027 Line Tracing Snail II Educational Line Follower Kit  [75027]

Brief Introduction

The Tamiya 75027 Line Tracing Snail II is an educational construction kit that helps users learn basic robotics and circuitry through practical assembly. The completed model follows a black line drawn on white paper, offering a clear demonstration of sensor-based navigation.

Structure and Sensors

The body and chassis are made from smoke-colored ABS resin and the kit contains two motors along with pre-wired components such as the sensing element and circuit board. An infrared LED and a phototransistor perform line detection so the snail can navigate on its own, and a green LED provides a visual signal when the line is detected.

Behaviour and Adjustment

You can adjust a speed switch and a sensor tuning dial to refine how the snail responds. When the unit senses a black line the right motor is activated to move forward and left, and when the line is lost the left motor runs to correct to the right, producing continuous line-following motion.