| Feature | FC-51 | TCRT5000 (bare) | Sharp GP2Y0A21 | |-----------------------|------------------------|------------------------|------------------------| | | Digital + (Analog) | Analog only | Analog (distance-based)| | Distance meas. | No (threshold only) | No | Yes (10-80 cm) | | Onboard comparator | Yes (LM393) | No (needs external) | Yes (distance linear) | | Price | Low (~$1–2) | Very low (~$0.50) | Higher (~$10–15) | | Best for | Obstacle detection | Line sensing | Accurate ranging |
The physical layout of the FC-51 is designed for ease of use. Before wiring the sensor, familiarize yourself with the onboard components and the pin header. Fc 51 Ir Sensor Datasheet
Whether you are building a line-following robot, a proximity-based alarm, or a contactless switch, understanding the FC-51 IR Sensor datasheet is critical to unlocking its full potential. This article provides a complete, in-depth analysis of the FC-51’s technical specifications, pin configuration, working principle, calibration methods, and practical application circuits. | Feature | FC-51 | TCRT5000 (bare) |
Some clone versions may omit the analog output; check your board revision. Whether you are building a line-following robot, a
🔥 Solder a wire to the "AO" pad (near the comparator) to get 0–VCC analog voltage . Then you can measure distance linearly for 2–8 cm!
Because of its "all-or-nothing" digital output, the FC-51 is ideal for: Obstacle Avoidance Robots: Preventing a rover from hitting walls. Line Following: Differentiating between a black line and a white surface. Object Counting: