The 4-channel Line Tracker sensor is a simple way to track the line. A line sensor is made up of a number of cells and each cell is made up of a transmitter and a receiver. The particularity of this transmitter / receiver pair is that it emits a light which must be reflected by the line to be detected but not by the possibly opaque background surrounding this line. Any transmitter / receiver pair capable of differentiating between a line and the rest of the earth (of a different color) can be used in a line sensor. The VCC pin is connected to 5V, the GND pin is connected to the GND, S1, S2, S3 and S4 pins are connected to the digital I / O pins 2 to 5 but you can use others. Characteristics Operating voltage: DC 3.3V-5V Operating current:> 1A Operating temperature: -10 ° C to +50 ° C Mounting hole: M3 screw Detection distance: 1 mm to 60 cm adjustable, the greater the distance the closer, the more stable the performance and the more intense the reflection on white. Output interface: 6 wires (1234: signal output, +: positive supply -: ground) Output signal: TTL level
