The document provides information about IR LEDs and photodiodes, explaining that IR LEDs transmit infrared light, which is invisible to the naked eye, while photodiodes generate voltage based on light intensity. It distinguishes between digital and analog IR sensors, noting digital outputs are high or low, whereas analog outputs vary with light intensity. For further inquiries, contact information for Robo India is provided.

1. Robo India
http://roboindia.com

4. • IR-LED – Tx
• PD – Rx
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5. • IR-LED work similar to normal LED
• IR-LED transmit infrared light
• IR light is not visible to our necked eye
• IR light is detected by Photodiode
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6. • How PD work ?
• PD generate the voltage depending on
the intensity of light
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7. • vdo
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8. IR-Sensor
Digital Analog
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9. • Digital – In digital sensor output is
digital (High or Low).
• Analog – In analog sensor detection
depend on intensity of light received.
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10. In case of queries please write us-
info@roboindia.com
www.roboindia.com
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