Infrared Proximity Sensor-E18-D80NK

Infrared Proximity Sensor-E18-D80NK
Description of Infrared Proximity Sensor:
E18-D80NK is a non-contact detection sensor providing a digital output when an object comes into a specific range of it. It is a low-cost, easy to assemble sensor with very little interference with the surrounding lights and environment.

Features and Specifications of E18-D80NK:
1. Input Voltage: 5V.
2. Current Consumption: 25-100 mA.
3. Response time <2ms.
4. Sensor type: Diffuse reflective type.
5. Sensing range: 3-80 cm.
6. Cable length: 45 cm.

Pin Configuration of E18-D80NK:
The table below showcases the pin configuration of the IR proximity sensor. It has 3 output wires, which are generally color-coded with Red as VCC, Green as the ground, and Yellow being the Digital output.

Pin Type/Wire color Pin Description.
1. VCC(Red) = Voltage input(+5V).
2. GND(Green) = Ground terminal.
3. Digital pin(Yellow) = Digital signal output.

IMPORTANT: The general color coding of the wire may vary in the E18-D80NK IR sensor from different manufacturers or distributors. Kindly follow the suitable datasheet for connections.
Some other common color code is: Brown: VCC, Black: Output, Blue: Ground

Working and Functional Block Diagram of E18-D80NK:
E18-D80NK is a variable range non-contact detection sensor. It comes with a transmitter and receiver in a single module setup. The transmitter emits a modulated IR signal which is reflected by the object in its field of view or the path and the reflected signal is then collected by the transmitter, providing a digital output to the microcontroller.

As we can observe in the block diagram, the technology behind this module uses modulation from the infrared light and the receiver part only detects the infrared light when it collects the correct signal. Hence, cutting down on collecting all the interferences from the nearby surrounding lights.

Connections of E18-D80NK with MCU/MPU:
E18-D80NK IR proximity sensor can be connected to a Microcontroller or a microprocessor easily. The sensor has 3 output wires which can be connected to an MCU/MPU in the way shown in the image below.
The Red wire(VCC) is to be connected to the 5V pin of the MCU, the green wire(ground) to the ground terminal, and the yellow wire(Digital output) to the digital pin terminal of the MCU

Applications of E18-D80NK:
1. Collision avoidance robots.
2. Machine automation.
3. Object detection.


Subramanian MK, currently serving as a workshop instructor at Sakthi Polytechnic College, Erode Tamil Nadu. With a career spanning 25 + years, Subramanian MK has dedicated himself to advancing knowledge in Electronics and Communication Engineering (ECE). His passion for exploring new technologies has led to the development of numerous projects, showcasing expertise in IoT and PCB design.

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