An INDEX PULSE is a digital signal generated from an incremental encoder on an individual output channel, once per revolution. This unique pulse may be used for several purposes: In conjunction with a counter, it can be used to track the total number of shaft rotations This type of encoder outputs a pulse string in response to the amount of rotational displacement of the shaft. A separate counter counts the number of output pulses to determine the amount of rotation based on the count

In automation applications, Incremental Photoelectric Rotary Encoder 1000PPR/4000CPR With Index Solid Shaft are used as sensors for angle, position, speed, and acceleration. By using spindles, gear racks, measuring wheels or cable pulls, linear movements can also be monitor by a rotary encoder. Rotary encoders convert a mechanical rotation value into an electrical signal that can be processed by counters, tachometers, logic controllers and industrial PCs.

Encoders are available with a choice of outputs. Incremental encoders generate a series of pulses as they move. These pulses can be used to measure speed or be fed to a counter to keep track of position. Absolute encoders generate multi-bit digital words that indicate actual position directly. Incremental Photoelectric Rotary Encoder 1000PPR/4000CPR WITH INDEX Solid Shaft can be used in a wide variety of applications. They act as feedback transducers for motor-speed control, as sensors for measuring, cutting and positioning, and as input for speed and rate controls.

Applications :

1. Door control devices
2. Assembly machines
3. Robotics
4. Labeling machines
5. Lens grinding machines
6. x/y indication
7. Plotters
8. Analysis devices
9. Testing machines
10. Drilling machines
11. Ultrasonic welding
12. Mixing machines
13. Converting machinery
14. Medical equipment

Features :

1. High reliability, long life
2. Anti-jamming performance
3. Small size, lightweight, compact structure
4. Easy installation
5. High resolution, High quality, line interface with waterproof protection
6. Max Response Frequency : 100KHz-300KHz.
7. Operating Temperature: -25 ~ 105°C.
8. The output circuit NPN open collector output type.
9. CE, RoHS Authentication.
10. Can identify the direction of the count pulse signal generated by the rotation of the grating disc and optocoupler.

Package Includes :

1 x ROTARY ENCODER 1000PPR/4000CPR

Features :

1. High cost-efficient advantages.
2. Incremental rotary encoder internal adopts ASIC devices
3. High reliability, long life
4. Anti-jamming performance
5. Small size, lightweight, compact structure
6. Easy installation
7. 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

Knob in the form of an encoder with a button that allows you to create a simple user interface. The module sends a digital signal on the SIA and SIB pins, depending on the direction of rotation. It works with voltages from 3 V to 5.3 V.

The sensor has a 5 pin connector with digital outputs SIA, SIB and SW to be attached to the pin of the microcontroller, e.g. Arduino.

Operating principle:
Incremental encoder is a kind of rotation sensor for translating the rotary displacement into a sequential of digital pulse signal. The displacement can be gained by counting the number of the pluses outputted in the course of clockwise or anticlockwise rotation. Comparing with the potentiometer, the rotary counter has no limit for counting. So, there is a reset button provided to
reset the counter to the initial state, restarting at 0

Features: 

1. It detects the clockwise and counterclockwise rotation
2. The number of steps in 360°: 20 steps
3. Button in the knob
4. Module dimensions: 32 x 15 mm

Package Includes:

1 x Rotation Sensor
1 x 5-pin custom connector jumper wire

This speed measuring sensor is a wide voltage, high resolution, short response time, and the switch output speed measurement module. It can test the motor’s rotational speed with a black encoder (measured spec. is related to the encoder, the inner diameter of D type encoder that provided is 4mm, can be used for motor output shaft w/ 4mm diameter, which is TT motor we matched, yellow shell and white axis)

Features and Specification:

1. Signal output: A, B two way; The TTL level
2. Disc diameter: 24mm
3. Inner Disc Diameter:: 4 mm
4. The encoder resolution is about 20 line
5. Speed measuring sensor configuration: The configuration can measure 1 road motor speed

Package Includes :

1 x Double Speed Measuring Module kit

1 x Screw set

This looks like a potentiometer, but it’s an encoder switch.

It is a cascadable 360 ° rotary encoder switch with 20 pulses per revolution, and each pulse corresponds to a detent. There are LED lights set for each detent to allow users visually check the real-time status of the encoder.

For ease of use, the module is designed with I2C data output and configurable accuracy within 1~51 for every detent (set in the program). For instance, when it is set to 1, turn on one LED light by rotating 2.5 revolutions; when set to 51, then one LED light can be switched on by rotating one detent.

In order to apply to more scenarios, the encoder is equipped with a cascade function that enables to control of multiple output devices by occupying only one I2C interface, such as, simultaneously controlling light brightness, color, volume, speed, etc.

Applications:

Application Field

• Automotive electronics
• Multimedia speaker
• Instruments and Apparatuses
• Smart home

Application Case

• Volume adjustment
• Fire regulation
• Speed regulation
• Light adjustment

Features:

1. Pluggable cascade
2. I2C Data output, forward to increase, reverse to decrease
3. Onboard LED detent indicator
4. Allow setting 4 different I2C addresses by address switch

Specifications:

1. Operating Voltage: 3.3V~5V
2. Total Rotating Angle: 360°
3. Pulses Per Revolution: 20
4. Interface: two Gravity connectors; I2C
5. Cascadable Device Number: 4
6. Rotation Lifespan: 30000±200 Cycles
7. Contact Resistance: ≤100mΩ
8. Insulation Impedance: 100MΩ above
9. Oscillation: ＜10ms press
10. Operating Temperature: -30℃~+80℃
11. Accuracy: 1~51
12. Minimum Settable Value: 1(Light up one LED when rotating 2.5 turns)
13. Maximum Settable Value: 51(Light up one LED when rotating 1 detent)
14. Storage: 0~1023
15. Dimension: 37*37mm/1.46*1.46”

Package Includes:

1 x Gravity: Rotary Encoder Module

1 x Gravity I2C/UART Sensor Connector

Digital module with an optical sensor, with a gap of 6 mm. The module has a built-in comparator, because of this, the output is a digital signal. Supply voltage is from 3.3 V to 5 V. Together with the disc of the encoder, it can be used as a device counting the pulses, etc.
The sensor has a digital output that is to be attached to the pin of the microcontroller, e.g.Arduino. After power-up, at the outputs will be logical statuses 0 or 1.

Features: 

1. Infrared detection, eliminating the interference of external stray light
2.  Schmitt trigger for stable waveform and signal
3.  Signal output indicator ( while breaking the beam, outputs low level, the indicator lights up )

Package Includes:

1 x Photo Interrupter Sensor
1 x 20-slots encoder disk
1 x XH2.54 3PIN wire