if(obstacle) // Trigger action
Here are some tips and tricks to help you get the most out of your FC-51 IR sensor: fc 51 ir sensor datasheet hot
Why? Because the FC 51 has a dirty secret. When powered for extended periods or placed near warm components (motor drivers, voltage regulators, or even sunlight), its analog comparator drifts, sensitivity changes, and false triggering becomes rampant. The sensor literally gets hot , and the datasheet—often a bare-bones photocopy—fails to address this thermal behavior. if(obstacle) // Trigger action Here are some tips