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The TCRT5000 module uses an infrared transmitter and receiver pair to detect color and distance through reflected light, and it's commonly used in line-following and object-sorting robots specifically because it can reliably distinguish a white surface from a black one based on how much infrared light bounces back to the receiver. Detection range spans 1mm to 8mm according to the listing's key specification, with an optimal focal point around 2.5mm, meaning the sensor works best when held quite close to the surface being read.
Being a dual-channel module, it carries two of these sensing elements, which suits line-following robots that need to track both edges of a line at once, or object-sorting applications that benefit from two independent detection points side by side.
An onboard potentiometer lets the sensitivity be adjusted for the specific surface, ambient lighting and desired detection distance, since reflective IR sensing can behave differently depending on how much ambient infrared light is already present in a room or on a track. The module is built around the LM393 comparator IC, which turns the raw analog reflection reading into a clean digital high or low output compatible with a microcontroller's digital input pins directly.
Operating voltage is DC 3.5 to 5V, and operating current is above 15mA. PCB dimensions are 32mm by 14mm, with a total module size of 38mm by 14mm by 18mm, and a fixed bolt hole is provided for convenient mounting onto a robot chassis.
Builders of line-following robots, simple object-sorting mechanisms, or any project needing to distinguish light from dark surfaces at close range will find this dual-channel module's adjustable sensitivity and digital output a practical, well-proven choice.
Reflected infrared light, used to distinguish surface color (typically white versus black) or detect close-range obstacles.
1mm to 8mm, with an optimal focal point around 2.5mm.
Two.
The LM393 comparator IC.
DC 3.5 to 5V.
| Brand | Generic |
|---|---|
| Channels | 2.000000 |
| Chipset | LM393 Comparator |
| Selling unit | PCS |
