VMA326
V. 01 – 19/03/2018
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©Velleman nv
5.
Overview
VMA326
The line tracking sensor based on TCRT5000 is a type of infrared reflectance sensor, and is commonly used in
line following robots, mounted at the bottom of the robot chassis. The line tracking sensor works by detecting
reflected light coming from its own infrared LED and by measuring the amount of reflected infrared light, it
can detect transitions from light to dark (lines) or even objects directly in front of it.
sensor adopts TCRT5000, high sensitivity
sensitivity adjustable by potentiometer
Working voltage 3.3 V to 5 V
operating current : 20 mA
digital switch output (0 and 1)
two fixed bolt holes for convenient installation
small board PCB size: 42 x 10.5 mm
power indicator light (red) and digital switch output indicator light (green)
detection reflection distance: 1-25 mm
6.
Pin Layout
S
digital output (black = low, white = high)
V+
5 VDC power
G
ground
7.
Example
The example shows that when the sensor detects a black area, the S pin’s output is a low TTL signal. The
LED13 switches off while the light L on this module switches on. On the contrary, LED13 switches on.
