Obstacle sensor, based on TCRT5000, uses infrared diode and photo-receiver to detect obstacle in front of it - emitted light just reflects back to the sensor. Onboard, you'll find voltage comparator, ...
// Reads the TCRT5000 analog (AO) and digital (DO) outputs and prints the raw ADC value plus a digital line-detected status to the Serial console every 100 ms. // Buy ...
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