8 Way IR Line Tracking / Following 8 Channel QTR-8A Sensor Module

The 8-Channel Infrared (IR) Optical Sensor is designed for robots and microcontroller projects, featuring eight IR LEDs paired with phototransistors to measure the amount of infrared light reflected from surfaces. Light-colored surfaces reflect more IR light, while dark surfaces absorb it, making this sensor ideal for line-following, grid navigation, and general proximity sensing.

Features:

• Eight independent IR reflectance channels, readable via analog lines on microcontrollers.
• RC timing allows digital I/O lines to measure analog values effectively.
• Ideal for proximity and reflectance sensing in robotics projects.
• Mounting holes (3mm diameter) for easy installation.
• Can be used with both 5V and 3.3V microcontrollers via jumper setting.
• Infrared LEDs can be powered off during idle to save energy (idle current ~10mA, active current ~100mA).

Operation:

• Each sensor operates independently with a capacitor-based RC timing circuit to determine reflectance.
• Provides accurate analog output based on reflectance timing.
• Digital outputs can be connected directly to microcontrollers for easy integration.

Specifications:

• Operating voltage: 3.3–5.0 V
• Supply current: 100 mA (active), ~10 mA (idle)
• Output format: Analog
• Optimal sensing distance: 0.125″ (3 mm)
• Maximum recommended sensing distance: 0.25″ (6 mm)
• Dimensions: 2.95″ x 0.5″ x 0.125″ (without header pins)
• Weight: 0.11 oz (3.09 g)
• Array sensors: 8 sensors for high-resolution detection

Applications:

• Line-following robots
• Grid navigation and mapping robots
• Proximity detection and reflectance measurement
• Embedded robotics and microcontroller projects

Buy this 8-channel IR optical sensor online in Pakistan for high-precision robotics and embedded electronics projects.