Rotary encoder - sensor arrangement 

Such a good video, I do not use encoders often in my projects, but when I do almost every time I come back to this series of videos for a refresher.

The best video on RU-vid to understand optical rotary encoder.

detail over detail over detail and everything live and practical! you're just amazing! Thank you so much!

a "must watch", as always, thank you!

A very good explanation, a great help to well understand and design our own ideas and applications. A great example of how to do a significative video. Thank you.

Great vid! Great Arnie impersonation.

팩트 박원삼 사장님 감사합니다

simply excellent; thank you sir

compliment from Palermo,,,,perfect sound and video.

This is the best thing I have ever watched

Really awesome video! Probably one of the best encoder videos available on RU-vid. Thanks for taking the time and effort to share!

Thank you very much , just continious like this, you are great ingeneer!

you rock!... I am donating right now... you already helped me so much... it's time to help to keep it alive. Thank you again!

Now finally I understand the rotary encoder! Only because it was explained with a German accent, the language of science! And of course because now the two sensors are placed besides each other! In fact it does nog matter where the (optical) sensors are at the wheel, but now that I look at this it all looks very simple. Thank you German guy!

Thank you sir, very informative.

perfect!!! thank you!

perfect video.Thank you

Einfach nur genial!

One of the best demonstrations of quadrature encoding I've seen. Thank you. I would like to add the following hardware solution. Take the output of the opto sensors through a Schmidt trigger, like a 74HC14 to deglitch them. Call the outputs X and Y. Next get a 74HC74 D flip-flop and connect X to the D input (pin 2) and Y to the clock input (pin 3). (Pull up pins 1 and 4) The Q output (pin 5) now indicates direction. Again take X and Y and connect them to the inputs of a 74HC86 XOR gate (pins 1 & 2) take two times clock from the output pin of the HC86 (pin 3). That is your hardware solution to reading a quadrature encoder.

sir this is simply superb

Teacher: I used to think that basic electronics useless, until see your teaching, thank you! You're really strong.

I love this accent so much.

encoder, this information component has always been fascinating, 👏👏👏👏👏👏👏👏congratulations on the techniques friend, 🇧🇷❤😉👍

Nice to see it in practice.

I build this and worked perfect for my purpose . I made a 91mm disk with 36 teeth and 36 spaces. My idea is to make it stop say when the counter comes up to 300. This is under 17 full revolutions. The question is what can I add to the program to make it stop at 300 counts. Thanks for the fantastic video and presentation. People like you make a difference.

Thank you for precise and valuable information. The video is so good that I translated it to Serbian.

This video is awesome mate, thanks so much!

I really like your videos. I learned so much from them ;)

Very good instruction videos. Does take a few times of watching for me to understand fully though :).

Super. Vielen Dank.

Thank you and your team for nice video.

Love the video! Thanks.

Very well done.

great animations and effort to share

Love your video sir.

thanks for sharing

Thank you!

as. much the best educational videos than a saw

nice work !!!

nice counter for wire and round or flat material

Awesome video👏👏👏👏🇧🇷😉👍great project, I subscribed and thank you !

good learning

Nice... Thx

Good tutorial. Just to completely overview a topic of this type encoders. You can make a video for the encoder which has double or several areas with different resolutions. As result, Arduino can use raw encoder for a fast movement to the desired position and with slow speed use precise area for the fine positioning. If the tooth size will be the same as the detecting window it will produce sinusoidal signals. This signal can be detected by ADC and after could be calculated angular position with extreme precision.

I really need to do this

great

wow, optimizaste bastante mi proyecto (un volante para pc con arduino)

nice!....havent watched the whole video yet (am in the process... but I wanted to comment something that is already apparent to you probably but interesting none the less....just stack the sensors vertically at a slight (1mm offset) and you could have it operate using just a hair more than a mm thick ;)....that would increase precission of the system by ?? approximately 700% :)

I miss your old videos like this one before they became mainly reviews.

Hi.. Thank you for the great video.... What type of position sensor system would you suggest for position estimation for a switched reluctance motor application?... Can we use the method in your video?

Perfect video tutorial Norbert how always. I have a question, what software you use for this nice simulation ? Thank you. Don't stop.

Well done, nice animation. Continue your great work, it's just a shame that you only get hundred views so far. But this is a very "nice" video. Thanks from Alexandre, Québec, Canada

It's very easy to learn sir request you to please make a video on different teath size

Thanks a lot, i really enjoyed your video.but i have some questions: could you please explain how to connect the encoder to a servo motor(UAV)? and how can the position be determined?

Made in Germany..Always Great !!

I recently got an idea of using distance measuring ultrasonic sensor like the hrs04 sensor to detect and measure linear movement and would be helpful in the CNC machine project. What do you say about that?

Also if you increase the resolution (to greater than the motor is capable (calculation would need to be done of course depending on specific specifications desired in teh end product...but....)...if you did increase the resolution to greater than that of the motor's resolution, you could (there might be an easier way) get input when it misses a step ....that is more precise than is capable otherwise which could be used to design a response algorythm to lower the speed or linear velocity of the movement to be in the capabilities of the torque of the motor without missing a step and at the same time keep positive identification on the location of the motor at ANY TIME...which means that it wouldn't have to re calibrate by running to a limit switch or what not...but could continue on and cut the speed, thus getting better material takeoff quantity and ending in a superior finish...and with less wear and quicker ;)

Mr. Heinz, thank for video, is it also possible to know the orientation of the motor by the two optical sensors?

My 90´s classic car used to have electronic headlights height adjustment. It seems someone replaced them with the cheap ones, and i am planning to build the rotary encoders myself and this video has been of great help. Is the arduino code used for this available?

I have observed that the pins marked 'D0,D1,D2,&D3' of the LCD display are not connected to the arduino in any projects and applications. Are they useless?

can you use stepper motor for this kind of configuration? this will clearly improve stepper motor to eliminate stall or miss step from the stepper motor

Again you have brought me to school. I have learned so much from you in detail about encoders. I have heard that Arduino's are not fast enough to calculate fast encoding, motor control. Have you had any problems with this?

Nice. What is that animation software?

Why dont you use just one sensor for tracking the steps and keep track of the direction in software through a variable when direction pin is triggered..?

How do you increase the resolution to something like 1º. Good videos.

Thanks for your great explanation! Do ou use a atmel microcontroler? Can you share a code for us?

What program do you use for animation creating?

What software did you use to make the animations?

Is the importance of resolution based on how much steps you want ? If I want to make only a single wheel rotation per step does the resolution matter in this case ? can i just attach a magnet to the wheel and use a hall effect sensor to count one step and that will be fine ?

Is it better to put the encoder on the slow shaft or the fast shaft for geared servo motors?

Thanks for video. Can i get the code for this? Also i want to implement it with pic16f628A or 877a.

My homemade Six Digit, 20MHz, CD74HC192 Up-Down counter circuit counts Quadrature Encoder pulses at 20Mhz speeds. And seems to be many times faster than using my PIC16F887 microcontrollers. Can you tell me why?

Where can I buy a digital counter kit already calibrated with a rotary disc ?

Nice Job, but, How fast are they ? What's maximum frequency ? Will the censors work at 5000 rpms of the disc ?

Sir how to measure degrees which type of sensor we used

I like the simple idea. Is it as simple as doubling the sensors for doubling the resolution? could hall sensors be used on metal gears?

Hallo Norbert. Ich habe einen problem mit enkoder geschwindigkeit, naturlich mit hand. Fur hohe umdrehung er zahlt garnichts. Bitte, hast Du einen code fur es ? Danke Dir.

I think about this few weeks ago). How about big weel with 2 mm tooths?

Anyone know if Opto encodes suffer debounce? As i have an encoder that is fluctuating between high and low while the motor has stopped.

ill be back

Hellow sir i want to use rotary encoder to measure linear distance by just multiplying counter with circumference of the wheel. In center of the wheel i fixed saft of encoder but i found problem that I made it to show a number of encoder into monitor when it changes the state. But when I rotate it, it shows a new line in serial monitor, but the number of it does not change (it wanted to change but it did not). however if I rotate it very slowly it works and changes. But I do not use any interrupts. Here is the code and help me to solve this problem : #include LiquidCrystal lcd(6, 7, 8, 9, 10, 11); // int address=50; // int read_value=0; const int buttonPin = 4; int buttonState; // int led=9; int val; int encoderPinA = 3; int encoderPinB = 2; int counter = 0; int encoderPinALast = LOW; int n = LOW; float Length; float r=31.82; float pulses=15; float pi=3.1428571; int istrue; void setup() { // pinMode(led,OUTPUT); pinMode (encoderPinA,INPUT); pinMode (encoderPinB,INPUT); Serial.begin (9600); lcd.begin(16,2); lcd.setCursor(0,0); lcd.print("LENGTH COUNTER"); lcd.setCursor(0,1); lcd.print(Length)+lcd.print(" mm ")+lcd.print( counter); //delay(400); } void loop() { ///// n = digitalRead(encoderPinA); if ((encoderPinALast == LOW) && (n == HIGH)) { if (digitalRead(encoderPinB) == LOW) { counter=counter-1; Length=2*pi*r*counter; Length=Length/pulses; if(counter

Hello Dear, Can we measure the tooth thickness of gears using this rotary sensor. If yes then please suggest me that sensor.

how to control steps movements, like lets say we have 400 circular points to move one by one and i need to move pointer in following example sequence starting from 0->10->240->45->28-> .......... -> 400 . How can we automate this ..

do you have a arduino UNO code ? because i am doing project and i am facing some problems so kindly help me please

Hallo. Wie geht es dir? Where is the video were you teach to convert a encoded motor to stepper motor?

#define P_FRACTION 1.0 //Proportional factor of control loop 0.001 - 10.0 (1.0) #define STEP_MARGIN 4L //10 - 1000 (1) sir i download your code from your given website i am confused can you explain these two lines because in your whole code P_FRACTION remains constant and what is this 4L?

hi sir...how to get value 5 degree per detection of pulse,...sorry for my bad english

i want step feedback system and i want to mount with gear box but i don't want to used PLC device, can you suggest any device and sensor? please

I'm trying to find an industrial sensor for this ? If anyone knows of something good.

What is that type of sensor called?

Sir I want program

Hello friend, your projects are excellent; I subscribed to your channel. In your video, at approximately 4:40, you show a Sensor with a Sprocket; I have a small Printer Motor coupled to an Optical Sensor and a small Sprocket (approximately 32 teeth) but my sensor has 4 wires, certainly 2 for power and 2 for the signal, so how can I use it with your code? Thanks

Hola como puedo hacer la rueda dentada para que queden perfectos como tu disco verde . Saludos

Is it possible to hack a rotary encoder w/sensor board? I have a usb encoder board that is used on a commercial wheel of fortune game. It is used to spin the wheel, as well as letter selection. I would like to use buttons on an extra machine instead. Right and left button for letter selection would be nice, and a button to say spin wheel max. BTW, game will not function if it doesn't see encoder board connected, so kinda need to work with it

details of sensor???

Where did you buy this sesnsors

Tem como traduzir ???

Know anybody if is possible to calculate speed of rotation?

can we make these machines

can we get code please ?