8 Channel IR Infrared Sensor Array | Infrared Detection Module

The 8 Channel IR Infrared Sensor Array uses 8 independent IR (Infrared) emitter and receiver pairs to detect the boundary between a dark line and a light surface. The 8 channel ir array sensor runs on 3.3V to 5V DC and draws 100mA total at full operation. Each channel outputs a digital HIGH or LOW signal. Optimal sensing distance sits at 3mm with a maximum of 9.5mm, so chassis height directly affects detection quality.

The 8 channel ir line sensor array uses IR reflectance sensing per channel. One non-obvious detail — all 8 channels fire sequentially in most implementations, not simultaneously. Crosstalk (interference between adjacent channels) increases at distances beyond 9.5mm, so mounting above that height causes unreliable readings. The honest limitation is sensitivity to ambient light. Direct sunlight overwhelms the receivers. Use indoors only. The ir line following sensor connects to Arduino, ESP32, and STM32 digital input pins through a single connector. Engineering students and line follower competition builders use it. To start, mount the module 3mm above the track surface and read each channel output pin. StemVolt provides this module tested for confirmed detection across all channels.

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Features:

• Operating voltage from 3.3V to 5V DC connects directly to Arduino and ESP32 digital input pins
• Eight independent IR sensing channels give wider line coverage than four-channel alternatives
• Optimal sensing distance at 3mm gives maximum signal contrast between line and background surface
• Maximum sensing distance at 9.5mm sets the highest allowable chassis mounting height for reliable detection

Technical specifications:

Applications:

• Line follower robot uses this module to detect a black tape track on a white floor surface
• Maze-solving robot uses eight channels to detect wall edges and make turning decisions at junctions
• 8 array ir sensor reads precise line position at 3mm distance and sends correction data to motor driver

Package includes:

• 1 x 8 Channel IR Infrared Sensor Array