This module works based on the reflection of infrared light. When following a line, the black line must therefore be able to absorb infrared light (approximately 950nm wavelength). The outputs of the sensors are high when enough light is reflected back.
Features
- Voltage : 3.3 – 5V
- Output Type : Digital
- Two 3mm mounting holes
- 8-way reflective optical sensors
- Dimensions : 17 x 67 x 2 mm
Wiring
| Label | Meaning | Connection |
| GND | Ground | Connect to GND of system |
| IR | Infrared enable | Connect to 3.3V or 5V of system (digital pin also will do) |
| D1 – D8 | Sensor output pins | Connect to any digital pins |
| VCC | Power source | Connect to 3.3V or 5V of system |
Note : To run the module at 3.3V, connect the solder pads in the bottom left corner to brighten the IR LEDs.
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