Waveshare Infrared Proximity Sensor, Robot Obstacle-Avoiding Module

Waveshare Infrared Proximity Sensor, Robot Obstacle-Avoiding Module

An infrared Proximity Sensor is an infrared proximity sensor that emits infrared light and also receives reflected infrared light and feedback on the presence of obstacles ahead.

Principle: Infrared transmitter tube is composed of an infrared light-emitting diode moment luminous body, with infrared radiation efficiency of the material (commonly gallium arsenide) made of PN junction, forward bias to PN junction injection current to excite infrared light.

The infrared receiver tube is the infrared light signal in electrical signal semiconductor devices, its core component is a special material PN junction, and with the infrared light intensity increasing the current also increases the output analog signal. When the detection direction encounters an obstacle (reflective surface), infrared light is reflected back to be received by the receiver tube, after the LM393 comparator processing output a digital signal, while the green indicator lights up, the detection distance can be adjusted through the potentiometer knob.

User Manual / Datasheet / Example Codes Etc.

Features

• Emitting a beam of infrared, and receive the reflected beam
• Features wide range voltage comparator LM393
• Adjustable sensitivity
• Signal output indicator

Specifications

• Power: 3.3V ~ 5V
• Dimension: 39mm × 15.5mm (include the IR LED)
• Mounting holes size: 3mm
• Detection range: 2cm ~ 30cm (depending on the obstacle's color, farthest for white)
• Detection angle: 35°
• Recommended environment: in door, to avoid the sunshine effect

Applications

• Robot path tracking
• Obstacle-avoiding car
• Pipeline counter

How to Use

In the case of working with a MCU:

• VCC ↔ 3.3V ~ 5V
• GND ↔ GND
• AOUT ↔ MCU.IO (analog output)
• DOUT ↔ MCU.IO (digital output)

Dimensions