Description

This is Orange 1000 PPR 2-Phase Incremental Optical Rotary Encoder with Outer diameter 41mm.
A rotary encoder is a type of position sensor which is used for determining the angular position of a rotating shaft. It generates an electrical signal, either analog or digital, according to the rotational movement.
This is a 1000 PPR resolution optical encoder with quadrature outputs for increment counting. It will give 4000 transitions per rotation between outputs A and B. A quadrature decoder is required to convert the pulses to an up count. The Encoder is build to Industrial grade.
The Encoder comes with a Standard 2 m cable length which can be extended with extra cable if needed.

Note:

Consider Adding Pull up resistor to both the A and B phase of the encoder output to avoid the effect of interference in output and get the precise logical output value from the encoder
Also adding a pull-up resistor to all phase output lines protects the open collector output-triode from damage due to direct Vcc supply short circuit.

Power and Input Terminal Assignments:

Terminal Name
Wire Color
Description

Phase A
White
Quadrature encoded output A

Phase B
Green
Quadrature encoded output B

VCC
Red
VCC should be connected to +ve 5V of supply

GND
Black
The ground should be connected to negative the supply

Shield
Golden
The shield should be connected to GND

Shielding is important. At a minimum, the cable should be protected either by a foil jacket with a drain wire or by a braided-wire shield that is grounded. For very sensitive applications or high-EMI environments, foil jacketed wires in combination with an overall braided-wire shield around the cable should be used to avoid interference and precise encoder output.
Output:? ? NPN open collector

Features :

High cost-efficient advantages.
Incremental rotary encoder internal adopts ASIC devices
High reliability, long life
Anti-jamming performance
Small size, lightweight, compact structure
Easy installation
Stainless steel shaft, High resolution, High quality, line interface with waterproof protection

Tutorial?Code:
//these pins can not be changed 2/3 are special pins
int encoderPin1 = 2;
int encoderPin2 = 3;

volatile int lastEncoded = 0;
volatile long encoderValue = 0;

long lastencoderValue = 0;

int lastMSB = 0;
int lastLSB = 0;

void setup() {
Serial.begin (9600);

pinMode(encoderPin1, INPUT);
pinMode(encoderPin2, INPUT);

digitalWrite(encoderPin1, HIGH); //turn pullup resistor on
digitalWrite(encoderPin2, HIGH); //turn pullup resistor on

//call updateEncoder() when any high/low changed seen
//on interrupt 0 (pin 2), or interrupt 1 (pin 3)
attachInterrupt(0, updateEncoder, CHANGE);
attachInterrupt(1, updateEncoder, CHANGE);

}

void loop(){
//Do stuff here

Serial.println(encoderValue);
delay(1000); //just here to slow down the output, and show it will work even during a delay
}

void updateEncoder(){
int MSB = digitalRead(encoderPin1); //MSB = most significant bit
int LSB = digitalRead(encoderPin2); //LSB = least significant bit

int encoded = (MSB << 1) |LSB; //converting the 2 pin value to single number int sum = (lastEncoded << 2) | encoded; //adding it to the previous encoded value if(sum == 0b1101 || sum == 0b0100 || sum == 0b0010 || sum == 0b1011) encoderValue ++; if(sum == 0b1110 || sum == 0b0111 || sum == 0b0001 || sum == 0b1000) encoderValue --; lastEncoded = encoded; //store this value for next time } Package Includes : 1 x Orange 1000 PPR 2-Phase Incremental Optical Rotary Encoder 4 x 4.7KΩ Resistors for?pull-ups 1 x Mounting Screw Set