KS0453 Keyestudio 3-channel Line Tracking Module

From Keyestudio Wiki
Jump to navigation Jump to search

Keyestudio 3-channel Line Tracking Module


In the smart car DIY process, we often use a line tracking sensor to make the smart car follow a line.
The keyestudio 3-channel line tracking module actually is an infrared sensor. The component used is a TCRT5000 infrared tube.
The working principle is to use the different reflectivity of infrared light to color, converting the strength of the reflected signal into a current signal.
During the detection, black is active at HIGH level, and white is active at LOW. The detection height is 0-3 cm.
We have integrated three groups of TCRT5000 infrared tubes on a single board, convenient for wiring and control.
Turn the adjustable trimpot to adjust the module’s sensitivity.
The module comes with two 3mm positioning holes for mounting on other devices.
Note: before testing, turn the potentiometer to adjust the sensitivity. The sensitivity is the best when make the LED at the threshold point between ON and OFF.


Technical Parameters

  • Operating voltage: DC 3.3-5V
  • Detection height: 0—3cm
  • Interface: 5pin of 2.54mm pitch
  • Positioning hole diameter: 3mm
  • Dimensions: 42mm*31mm*7mm
  • Weight: 6.6g
  • Environment attribute: ROHS

Wiring Diagram


Test Code

int sensor1 = 2;
int sensor2 = 3; 
int sensor3 = 4; 
int val1; 
int val2; 
int val3; 
void setup() 
  pinMode(sensor1, INPUT); // set sensor to input mode
  pinMode(sensor2, INPUT); // set sensor to input mode
  pinMode(sensor2, INPUT); // set sensor to input mode

void loop() 
  Serial.print("  val2:");
  Serial.print("  val3:");

Test Result

Done uploading the code to control board, open the serial monitor and set the baud rate to 9600.
When the tacking module detects black line, output 1; detecting white line, output 0. As figure shown below.


  • Download all the relevant info. from the link:


Buy from

  • [ Official Website]