The onboard IR LED emits infrared light at a specific frequency.
Provides a simple HIGH or LOW signal (TTL level), making it easy to interface with microcontrollers like Arduino or Raspberry Pi. fc 51 ir sensor datasheet hot
A: Approximately 23 mA at 3.3 V and 43 mA at 5.0 V. This should be considered when powering from batteries. The onboard IR LED emits infrared light at
| FC‑51 Pin | Arduino Pin | | :--- | :--- | | VCC | 5V or 3.3V | | GND | GND | | OUT | Any digital GPIO (e.g., D2, D8) | This should be considered when powering from batteries
If your is getting hot , it is likely due to a wiring error, excessive voltage, or a component failure. Under normal operating conditions, this sensor should remain cool to the touch. Quick Troubleshooting for Overheating
While both use IR light, they are optimized for different tasks. Here is a comparison: