How Rotary Encoder Works and How To Use It with Arduino
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- เผยแพร่เมื่อ 25 เม.ย. 2024
- howtomechatronics.com/tutoria... ► Find more details, circuit schematics and source codes on my official website .
In this tutorial we will learn how rotary encoder works and how to use it with Arduino. A rotary encoder is a type of position sensor which is used for determining the angular position of a rotating shaft.
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Music: Aduro by Jens Kiilstofte (machinimasound.com/music)
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WOW. Finally I understand the rotary encoder logic. Best explanation I have run into in 10 years. Your description turned on the big light bulb on in my brain and I understand it now. The code is so simple too. THANX!!!!!
Thanks once again for a greatly instructional video. After watching not only do you understand the principle behind it, you also have a piece of working code at the ready. Thanks alot :)
Brilliantly explained from theory to application. Well done!
Fantastic! Looking at pictures of waves just didn't do it for me. This video completely cleared it up. Thank you! Subscribed.
please no stop .. you explain so good
Just plain and simple explanation. Great video, exactly what I was looking for. Thank you so much! 😊
your explanations are so clear, makes it easier to understand how this works. thank very much!
well done. thats the best explanation for rotary encoder i ve seen so far
Many thanks for the clear guide on how encoders work, I found the animated graphics particularly useful.
You are the Man! Thank you: very clear and very consecutive instructions and video. Great job.
Great Job, articulate and directly to the point. Thank You!
@Samir Ben This is spam
Great tutorial !!! Helps me so much doing my current project. BIG THUMBS UP
Awesome video, thanks! :)
Great stuff! I was initially looking at some library to handle this but it’s so easy thanks to your explanation I’ll just handle it myself
awesome seeing your videos again its been a long time since you uploaded a video !!
Thanks Mechatronics for your time and work. From Sydney all the best. 👍
Thank you too!
You are my savior in ELECTRONICS.
*Thanks! Recommend making a video on controlling position of a continuous servo using a continuous rotary encoder!*
Currently working on such a video. I will publish it next week.
Cheers
Oh, thanks in advance!@@HowToMechatronics
Another recommendation that is likely easy is a record and playback motion robot arm using servos. Bonus points for making it a pick and place machine with OCR!@@HowToMechatronics
Thanks for the video. Great Job and effort to produce it.
Dejan, Great video! thank you. Got it to work. If I turn the dial to quick the nema jump, not smooth and has a pause when reveres. I've tried trimming the drive board and the delay times. Any idea?, thanks again for all you great work.
Very helpful! Thank you so much! :)
Wow, such elegant code...My overly complex code didn't work well when I spun the encoder quickly, this works flawlessly. Thanks!
It's not that elegant tbh, it should be implemented with hardware comparators and interrupts
Great job bro, thanks for everything.
Good explanation, thank you.
Simple and good explanation
great video. simply and to the point explanation
omg you explain so good thanks
great explanation! Thanks a lot.
Amazing, thank's a lot!
That's What I Want To Know Thanks
Awesome explaination.. Regards from Indonesia
Thank you very much !!! Now i understand it :)
Grate job.. It was really effective for me.. thx alot and carry on..
Really helpful, thanks.
Very informative! Thanks!
Nice video buddy keep it up :)
This guy is the greatest.
Very good explanation
thanks, the best explication!!!
Excellent videos, thank you
Do you know the maximum speed of the decoder? Can it turn up to 200 rounds per minute? I tested once and it was not counting correctly - so the question is - was a problem with Arduino or with the mechanic of the decoder?
Thanks you
Great video, short and to the point :)
Glad you enjoyed!
Again nice one ! Can you make a separate video on ADXL345?
Nice info, thanks for sharing with us, well done :)
This is better than searching for confusing datasheets on the website. THANK YOU A LOT
Glad it was helpful!
great tutorial thank you.
Dear Friend, pls, upload another ligh & simply tutorial like this, I loved it, Thx You !
Thank you Dejan. You are a good teacher. Go on!
very nice and short video keep it up 😊👍👍
Nice video thank you!
Thank you. Your code worked. I thought that Kevin Darrah's code using interrupts was working for me but it was not. It was skipping all around but your code works perfectly for me with no skipping at all. How u do dat? Thanks man.
which animation tool did you use?
Thanks
GOOD WORK BRO..
Great instructional video
You are the man!
Can you do a video on measuring the angle of rotation of the stepper if connected the encoder to the shaft of the stepper and if the shaft is rotated manually?
Thanks that was amazing...
Great video!
Great explanation, everything i needed to know.
Thank you friend!
thanks for your tutorial, it helps,regards
referring your tutorial,so is it possible to synchronize two surface speed of conveying belt/goods ?, since the encoder rotated by a surface speed and give the signal as a control to a motor that can produce similar surface speed to another conveyor for example, thanks for your feedback,regards
So great, thanks!
Hi Dejan, thanks for sharing this helpful tutorial,I would like to use a rotary encoder to replace the menu navigation buttons in my project, your video is very useful.
I notice that you did not appear to implement any software de-bouncing techniques to overcome the switch noise, yet your example did not appear to suffer from switch bounce. Did you use a hardware filter of some sort?
Thanks.
Yeah I was wondering about that. My encoder skips when I move it then when it clicks. So each "notch" counts as TWO. 0... 1,2... 3,4.... 5,6.... I suppose I can code accordingly but, slightly annoying.
Yes, my encoder produces the same behavior.
Maybe the two Serial.print() statements in the loop slow it down sufficiently that the chatter has stopped by the time it looks around again. With a faster arduino like an ESP32 the bouncing may be seen again. Havent tested it but just a thought!
Nice and clear explanation, thanks for the video. I wonder is it possible to control the LED light intensity using this encoder?
Just use a potentiometer DUH
Thank you 🙏
suscribed, videos are very good, I'm studying mechanical engineering, have to choose If I want to specialise in Mechatronics, your videos help me a lot in my choice, very cool
Thanks!
CAN U MAKE A VIDEO WITH IN MENU USING 16x2 LCD DISPLAY ???
i would like to build a wireless follow focus for cine lens, what's your suggest?
Great Work
thank you this was very helpful, but you didn't talk about the difference beetwen absolute and incremental encoders..
What is the least angle it can move ?
For example
If I connect it to a shaft of a robotic arm will it give 30 counts with 30 degree change ?
does it make sense to use this as an interrupt in your code or is that OP? cause if the project has other things to do i'm worried it'll miss this
The best one at yutub ¡
Is it possible to design detent switches along with continous rotary knob? and how if its possible?
Very good thank you, I love that Black Magic!
can we use this rotary encoder?
In bidirectional Bluetooth app led brightness controlar project
Thanks for uploading the video.
For some modules above program functions only when INPUT_PULLUP is defined for CLK and DT pins
Hi if I want a very smooth Jog wheel for a Computer witch encoder would be great?? with RPP #?
in this example was the encoder connected to 5v at the common pin and then pins A and B were connected to digital pins with pulldown resistors?
Thanks!
Great
very super and good teching
Thanks!
If I use a magnetic encoder circuit in micrometal gear motor ...does it be work like stepper motor
Wait for a quick reply
output is different from the code it gives only negative values on CW or CCW direction.
Great work!Thank U!
But 20 pulses for one revolution,how can you show 1,2,3,4,5...n degree ,not 1,9,18 degree?
would you please can you show the circle diagram for stepmotor section, is LCD connection I2C ? thank you
Huge thanks
great!! can I ask you abput this topic?
I have a encoder with 8 Cables and 1500 ppr ( A+ a- B+ b- Z+ z-). I just connect the A and B to the arduino uno with this code. But the reading speed is not enough to catch all the pulse i think.
Do you think that an arduino Due could help me? Or based on your experience what could be the solution?
thanks
Nice explanation and animation.
But in your code, it will be more accurate if you use interrupt function to detect the change of signal.
Can it continue to increment after more than one revolution please ? Thanks for answering.
what software you use to create these graphics and animation
thank you
Can rotary encoder be used to measure diameter of a object? I wanted this diameter to input to some formula and get some other output.
Me and my friend are making a wind turbine project that dedects and rotates to wind source. How can we use rotary encoder to sense the wind or can we use something else?
is there any formula can used, for explain how it work
excellent
which software is used to make the animation .?
Can we bind a rotation to a key? For example if i turn it clockwise with every step it will press 'A'.
how many turns does a rotary encoder have and how would i code it so that when i tuen the knob, it goes to the selected menu and i want to press in to select the menu
Hello Dejan,
A lot of thx for your lessons and explanation. I gonna to use this sketch for some regulator with rotary encoder. I made a copy of your sketch and everything was OK. Some time later unfortunately in the serial monitor I've got double increment and double decrement for each click of the encoder. My version my encoder went out of order. Could there any problem with arduino? What you about?
Hey Werdy, I have the same issue, did you solve it? @Dejan: Thanx for the video, very helpfull!
Hello Jiris,
Yes. I've found solution. Like this one. There are two interruptions for Arduino UNO. You can change interruption number dependently the board model. If you need the line "encoder0Pos++" or "encoder0Pos--" could be changed for another one. For example encoder0Pos=encoder0Pos+10 or encoder0Pos=encoder0Pos-10.
#define encoder0PinA 2
#define encoder0PinB 3
volatile unsigned int encoder0Pos;
boolean A_set;
boolean B_set;
void setup() {
pinMode(encoder0PinA, INPUT);
pinMode(encoder0PinB, INPUT);
encoder0Pos=0;
// encoder pin on interrupt 0 (pin 2)
attachInterrupt(0, doEncoderA, CHANGE);
// encoder pin on interrupt 1 (pin 3)
attachInterrupt(1, doEncoderB, CHANGE);
}
void loop(){
// there should be your code
}
// Interrupt on A changing state
void doEncoderA(){
// Low to High transition?
if (digitalRead(encoder0PinA) == HIGH) {
A_set = true;
if (!B_set) {
encoder0Pos++;
}
}
// High-to-low transition?
if (digitalRead(encoder0PinA) == LOW) {
A_set = false;
}
}
// Interrupt on B changing state
void doEncoderB(){
// Low-to-high transition?
if (digitalRead(encoder0PinB) == HIGH) {
B_set = true;
if (!A_set) {
encoder0Pos--;
}
}
// High-to-low transition?
if (digitalRead(encoder0PinB) == LOW) {
B_set = false;
}
}