Control Stepper motor 28BYJ-48 with ULN2003 for Arduino

[@robojax]

Please subscribe here bit.ly/rj-subscribe and thumb up 👍. Thanks. I appreciate it.

[@johnmellor6065]

just followed your video and wired it up as you described it worked first time, which is unusual for me thanks

[@robojax]

I am glad you were able to do it.

[@skrmnghrd4520]

Woah that is really unusual

[@humbertosandoval]

@@robojax how can i set the RPM for the motor....?

[@planker]

Excellent presentaion. This has cleared up some stuff. I have a PTZ-E27 that I don't trust on my WiFi, It uses the 5 wire steppers as servos, Now they are Arduino servos Thanks. Now I have some cool stuff to go do.

[@robojax]

Here is the full video with 8 projects kzbin.info/www/bejne/ioKag2WYjpKAjbc

[@2xx_eli364]

Thanks allot friend for your video and code on stepper motors and how to use them for our own use. Got of to a rocky start at first due to no delay(1) code seen...

[@robojax]

you are very welcome. I am glad your project worked.

[@johnbowie3566]

Thank you for your instruction! Greetings from germany and stay well in corona-time!

[@robojax]

You are welcome. Thank you from Canada. You take care as well. I am home and hopefully we all pass this hard time God willing.

[@veronicaortiz2058]

Thank YOU! finally someone who knows what they are doing

[@robojax]

You are welcome. Here is $200 Arduino course for free Arduino Step by Step Course (over 100 lectures) Starts here robojax.com/L/?id=338

[@neeljagtap0702]

Thanks alot i followed this and it worked it was my first arduino project

[@robojax]

Glad it helped. Welcome to Arduino. Learn Arduino in 30 Minutes robojax.com/L/?id=135

[@chadconway335]

Thanks man, I've had these stepper motors sitting here for months. Your video made it a breeze, threw you a few bucks on paypal. Happy Holidays RoboJax

[@robojax]

You are welcome. Thank you for your support. Happy Holidays to you too.

[@planker]

Thanks!

[@robojax]

Thank you for your kind support.

[@Andyruuuu]

This worked perfectly for me thank you.

[@robojax]

Glad it helped

[@the_haunted_outhouse]

Thank you for the informative video and the associated code. It worked very well for me. I refactored the code and built a small library to include with my projects to keep the main code for my projects cleaner. I was able to boil the drive code down to an array and about 8 lines across two small functions.

[@robojax]

You are welcome. That is the best way but many viewer will struggle to understand it. I preferred to put it the most plain way so people can see how it works. Once they learned, then they can write simpler code.

[@yashaswikulshreshtha1588]

@@robojax I couldn't find you code on website so I copied from video after doing exactly the same I wasn't able to get the motor running idk why! And can you please explain how the stepper motor actually works? thankyou

[@kunalsharma6703]

thanks for the detailed video......great help for beginners

[@etstudio1790]

greeting. thanks for the video. I have a question: my project is almost finished, I connected 3 servo 5v, one stepper 5v engine, one lcd display. all on the arduino board. How much voltage should I use? is 5v enough? ... or should I use more? I use it through the ULN2003 drive! like in this video.

[@robojax]

voltage is the operating voltage and it does not change. so when you supply power of 5V, measure the current (ampere) for one servo motor multiply it by 3 and then measure the current for stepper. then add them together and you should get something like 1.2A (for example). then you find a power adapter or batter that can supply 5V 1.3A or 1.5A just higher than 1.2A.

[@robojax]

have you see this latest video of this stepper kzbin.info/www/bejne/ioKag2WYjpKAjbc

[@etstudio1790]

@@robojax you make great torturials. Thank you. I've reviewed almost everything about stepper engines but now I'm confused by these amps. I hope I take the right amperage without measure it because I can't measure it. I'll use 1.5 A :) thank you, you're a nice person

[@theflyingdutchman]

hi, thx for the great tutorial. i have 1 isssue still. i want to combine a 4th button to control a servo, i keep getting a error with the "void drivestepper" part. for some reason i can't get in in the correct place. can /will you please help me out or give some hint how to combine this sketch with a 4th button for a servo. thanks in advance

[@robojax]

This video has not push buttons. search my channel for video to control speed, angle, stop, start, potentiometer etc. Here if you don't know how to search kzbin.infosearch?query=28byj-48 all videos

[@shamailhasanain8517]

Thanks alot. Usefull..you can also show how to use stepper library and its functions.

[@robojax]

the code in this video does not have any library. I have explained it fully. I never skip the details.

[@lacenaepronta]

Thank. Nice explanation. Do you also use the accelstepper library in some other video?

[@robojax]

you are welcome. I've make tones of videos for different applications which was not possible otherwise if I used any library. here my other related videos kzbin.infosearch?query=28BYJ-48

[@andreaperi8520]

ho eseguito il tuo progetto, tutto ok ora, è possibile far funzionare il motore per un tempo X e riavviarlo invertendo la direzione di rotazione? Grazie per l'aiuto

[@robojax]

ovviamente possibile. Ma chi scriverà il codice. Ho modalità più di 10 o 15 video per questo motore che sono molto utili per molte applicazioni. per favore cerca nel mio canale 28BYJ-48 e sono sicuro che puoi trovare qualcosa. Inoltre ho spiegato completamente tutti i video. la maggior parte ha sottotitoli in italiano. quindi guardali, impara e scrivi il tuo codice. buona fortuna e stai al sicuro.

[@progeinsrl6897]

Great! It works better than including default stepper.h library.

[@robojax]

Thank you. Glad to hear that.

[@guyguy6420]

Ciao. Premesso che volevo farti i complimenti per il video nonché la spiegazione del progetto. Volevo chiederti un info. E' possibile fare in modo di farlo girare anche in senso orario e antiorario in modo alternato ? grazie

[@robojax]

Grazie mille. sì, è possibile. Avere più video su questo motore. Ecco il link: kzbin.infosearch?query=28BYJ-48 Ahmad dal Canada

[@travisrenaut684]

Hi, top video my friend, i have succeeded in getting my stepper to work. my question is can i use the same code to control a Nema 17 1.8° 42mm 0.44N.M 1.7A Stepper Motor 4-Lead with a A4988 . thank you

[@robojax]

Hi Please see this video kzbin.info/www/bejne/mYq3enagaamKj8U

[@travisrenaut684]

@@robojax thank you, problem solved.:-)

[@dingojack7023]

what is the int count=0; for in your source page? I'm guessing it was left over from a part of code checking ratio or switch the direction. I just modified it to count++ for each loop and switch direction, value of 4321 does 360 degrees.

[@robojax]

Yes I was doing something to count and forgot to delete.

[@NaderTheExpert]

Can I connect 9v battery to +5v in of uln2003 driver and drive 5v stepper motor with 9volt battery?

[@robojax]

no you can't use it. the board will burn. please watch this updated better video with so many examples kzbin.info/www/bejne/o6SlZK2mrd5qi80

[@marciofsrm7366]

Olá professor, me tira uma duvida, se consigo controlar 4 ou 5 motores de passo utilizando uma esp32? se sim, quais pinout utilizar, a minha esp32 tem30pin... valeu obrigado

[@robojax]

Isso é um problema. você pode usar o expansor de portas I2C.

[@andreaperi8520]

ora, è possibile far funzionare il motore per un tempo X e riavviarlo invertendo la direzione di rotazione? Grazie per l'aiuto

[@robojax]

si, tante possibilità. Avresti dovuto cercare nel mio canale per quello. sarai sorpreso di quanti altri codici ho. Ecco tutti i video relativi a questo motore kzbin.infosearch?query=28BYJ-48

[@felixdsouza385]

Hello nice video can I use Arduino mini pro instead of UNO as I plan to a make turntable that moves at 10 degree angles for taking pictures for photogrammetry

[@robojax]

Any Arduino will work. that is the beauty of Arduino. Here are my videos on this with tones of different features kzbin.infosearch?query=28BYJ-48

[@jamesumipig3697]

is there any way to use the battety connector?

[@robojax]

I have sown it. I said your power supply. Your power supply is your battery. If your motor is 5V, connect 5 to 6V battery and if your motor is 12V connect 12V battery.

[@HimAnhTu]

How can I use an external source to keep my unl2003 from getting hot?

[@robojax]

just respect the operating voltage. make sure it is 5V. Simple as that.

[@vincentstanleyso4577]

Hi. I have problems with making the Arduino work without a power source connected to the USB hub of the Arduino. It works just fine when the Arduino is connected to my computer and at the same time is being powered by an external power source. Thank you!

[@robojax]

Hi, you should not have problem. just supply 5V from USB or 6 to 12V from VIIN pin. it should work.

[@RazZyvannilla7]

Hey, so the LEDs on my board are flashing when I upload the code. They flash in order ABCD over and over, do you know what this error is?

[@robojax]

what error? flashing? they have to flash. but if they flash so slow that you can see, it means you've set the speed such that I it will complete one rotation in 1 hour. See my other video. I've got over 10 videos on this motor.

[@atulkhatavkar6986]

Hello Sir my motor is just vibrate and not moving. My connections are correct similar to you also connected external power with common ground still not working please help.

[@robojax]

I will reply to all Subscriber's 🔔 questions. So make sure to Subscribe.😊

[@JohnDoe-oh7gf]

Hello I've followed your tutorial in the past and made a functioning turntable using this stepper motor. Recently trying to improve on my design I noticed it no longer works. The motor is just buzzing. I'm powering the motor using the 5V pin from the arduino board and the board. I'm at a loss on how to troubleshoot this. My primitive mind only speculates that maybe the motor is in some kind of wrong position because there is no on/off switch the board resumes executing the program as soon as the power is supplied. I did try to add delays before the motor started to work but currently I have no progress. Can you give me a clue why is this not working? I'm currently using your code as is. Cheers.

[@robojax]

Hello, when motor buzzes it means wiring is incorrect. check it again. Or the PCB controller is dead if wiring is correct.

[@JohnDoe-oh7gf]

@@robojax Thank you for the reply. The wiring seem to be ok. I've ordered a new stepper motor and stepper motor controller. I will try to redo everything. EDIT: it seems now its working. In the end I've switched out the motor and driver unit so it could be the fault of both also I did find a design flaw in the way that I connected the rotating bit to my turntable that made too much friction that stopped the motor working. Thanks for the help.

[@KJW648]

Nice video :) I slow down your script(increased the delay) to see the LED sequence, for some reason the third LED is not coming on, can't figure why ??? Have made my own "Full wave" script and it work great.

[@robojax]

Thank you. yes you can play with it but ca't know why one LED doesn't turn on.

[@ersatz7107]

is there a code for controlling the motor with a potentiometer like how you would control a servo motor with a potentiometer?

[@robojax]

Just updated the description where I added the link to my video on how to control it using potentiometer, how to control it using 3 push buttons and how to control is using hand gesture. good luck.

[@freemanfreed1581]

Can you make a stepper motor rotate 52.24 degrees only? how? what about a DC motor?

[@1027sterling]

The best way is to just google some example code and play with the values to get the specific angle when you actuate the circuit. Say, press a button, and it moves to position, press the button again and it returns. Actually very useful. learn.adafruit.com/adafruit-arduino-lesson-16-stepper-motors/arduino-code www.amazon.com/LAFVIN-28BYJ-48-ULN2003-Stepper-Arduino/dp/B076KDFSGT/ref=sr_1_3?keywords=stepper+motor+kit+uln2003&qid=1566870972&s=gateway&sr=8-3

[@robojax]

I have it in my "to do" list. I would have to use LCD screen so you know the angle.

[@jojotoomojo8016]

Do you need those clamps to make it work

[@robojax]

which clamps? Please tell me the time like 4:30 so I check it.

[@jojotoomojo8016]

Never mind I figured it out

[@MohamadSaleem-w7z]

Hello sir, I need to know how I can get the MOTOR to do 10 turns to the right and 10 turns to the left and keep doing that. THANKS.

[@robojax]

Assalamu alaikum, wow. interesting project. I will put it on my list and if time permit, I will make video.

[@muhtadi313]

thanks for learning ,but how we can stop the stepper in a specific posstion please help me.

[@robojax]

you are welcome. I have course on Udemy with 2 push buttons to stop it any point www.udemy.com/robojax-arduino/

[@bertjanboss6973]

Robojax Thank you for te good video, is there an option in the code to let te motor turn faster?

[@robojax]

you are welcome. This is the fastest speed. You can slow it down by adding delay in side the loop like delay(50); or 100 which is 50 millisecond and 100 is 100 milliseconds.

[@amitdebnath9356]

If I use arduino due which is operated on 3.5v.so which type driver I have to use?

[@robojax]

You can use this module. As I have explained , you can connect external 5V for the motor. Watch the video.

[@metallicaandchimaira]

Is there a way to power the motor without an arduino? I got a speed control circuit and it does not work when I connect everything

[@robojax]

for stepper motor you need a microcontroller to send those signal I've shown. Arduino is a microcontroller.

[@metallicaandchimaira]

@@robojax you cant just connect it to a potentiometer and increase the speeds with a knob rather than controlling it with an arduino?

[@hsnrsd3468]

Please help to create source code for 2 x stepper motor 28byj-48 with mpu6050. I have no idea the algoritm between the degree mpu and degree motor sync.

[@robojax]

watch the video again. 1- Define 4 more pins for your 2nd motor. 2- inside setup define 4 pin more as output 3-change the vairable _setp to _step1 and make another one _step2, and do the same for "dir" varible and change it to "dir1" create another variable "dir2" and inside the loop duplicate the code replacing all pins with the one you defined in setp (1) and replace all "_step" to "_step1" and "_setp2" and then dir1 and dir2. If you can't understand this code, then watch mother videos on relays. You will learn how to define and change stuff. Can't help further.

[@hsnrsd3468]

@@robojax Thanks for the reply. yes, I can connect and define 2 motors. in this case, when the MPU6050 in 30 degrees, the motor goes to -30 degree to stabilize the object. it sounds like balancing motor. there are so many samples for DC motor and Stepper NEMA17, but I didn't find the sample for 28byj-48 motor.

[@Dsilvainvesting]

Very well Sr.! I subscribe to your channel with pleasure. Your explaining technical knowledge is very good!. Keep going!

[@robojax]

Thank you very much. I am pleased to know I can be helpful.

[@kevindrakol]

Hello with that motor and controller I want to do with an application to the button a button on the cell turn to the right when you press another turn to the left and you stop everything you could help me could not do anything

[@robojax]

The direction of motor is determined by the variable "dir". Use this button project to read button www.arduino.cc/en/Tutorial/Button and inside the loop just before switch(_step) put this code. if (buttonState == HIGH) { dir = true; } else { dir = fales; }

[@jacobforeman5421]

Very helpful, it works! Can you say how to make it start and stop on timed intervals?

[@robojax]

just add delay like delay(2000) will make it delay 2 seconds at any stage you add. Here is my other video on this kzbin.info/www/bejne/oqOoiGuuobihq7s and to start and stop with push button kzbin.info/www/bejne/p16raHqYrr1ontE

[@LuisDanilo95]

Moving a stepper is not simply sending high and low signals just because, you must keep in mind the other aspects such as the frequency the motor handles, in other words, it's not about to send ones and zeros awkwardly, at least you had to put a delay . .. otherwise you energize the coils, as I said, awkwardly.

[@robojax]

yes. you are right.

[@nektarioskoumantakis4987]

How can I use a button that if I press it once the motor will rotate a full circle?

[@robojax]

Here are my videos on that and I have included links in the description of the video as well kzbin.info/door/kcBSig_Iu4ZnAIeCeG1TVgsearch?query=28BYJ-48

[@isabelleetsylvain8109]

Hello, you have a variant on you site to stop the motor after 3 sec. You need to remove the 'else' (located almost at the end of the script) because it always reset the counter to zero and the motor never stop.

[@robojax]

You are right. I will test the code and update it. Thanks.

[@xuanhoadao1992nd]

I am finding the answer for that question, motor can not stop, thank the both

[@JohnDoe-oe8gm]

So if I don't have an external voltage source it will not work?

[@robojax]

it will work if you connect it to 5V of Arduino. But if you overload the Arduino board, it might get damaged. Depends on the motor what you do with it.

[@JohnDoe-oe8gm]

@@robojax I tried to power it using the arduino but the motor only vibrate and not rotate and I think I should get an external power source.

[@piyavaca3163]

im newbie with arduino and i follow your instruction and it's work great ,thank you so much ))) the stepper temperature even very stabil. if you don't mind to explain i just wondering how to run 2 stepper motor with your code .Thank you

[@robojax]

You are welcome. if it gets hot, 1-Input Voltage is higher than motor voltage. Make sure to connect 5V if motor is 5V 2- Incorrect wiring. for two motor, I would have to make another video.

[@james6609]

hello can a sensors be addet to the arduino to make the motor recerse the same distance as i want to work a barrier on a model railway in other words when the first sensor is hit by the train it will close the barrier and when the second sensor is hit it will reverse the motor to open the barrier and would the code be difficult to write as i am new to electronis your help would be greatly received regards james

[@robojax]

Watch this video and see how the direction of motor is reversed with hand gesture. you can use your sensor instead of the gesture sensor and change the direction of the motor. kzbin.info/www/bejne/gZekn4idlrh3o6s

[@james6609]

hello thank you very much for your help

[@robojax]

you are welcome.

[@KJW648]

Very easy, just add a couple of pins for the 2 sensors, when then sensor go hi/low on the pin, do a counted loop to open the gates and stop. Then when the other switch is activated do a reverse count to close. What sensor you use and how you open/close the gates, is down to you.

[@alessandromanzocco3746]

hello, my friend made for me an arduino IR controller to move a step motor by the tv remote controller. everything works fine, but he doesn't know how to make the motor move constantly while keeping pressed the remote button. Actually everytime i push the button, the motor turn just for the steps that he set. So to set the right position i must press many times the button. do you have any council? thanks

[@robojax]

it could be done many ways but in your case you just need to find out how long (time) you want the motor to run every time you press the button. Then you can set a delay to stop it after that amount of time.

[@alessandromanzocco3746]

Robojax thanks for your quickly reply I will pass these informations to my friend. Have a nice day

[@alessandromanzocco3746]

arduino is not my daily bread LOL this is what i have now: #include #include #include // Create the motor shield object with the default I2C address Adafruit_MotorShield AFMS = Adafruit_MotorShield(); // Connect stepper motor with 32 steps per revolution // to motor port #1 (M1 and M2) Adafruit_StepperMotor *myMotor = AFMS.getStepper(32, 2); /*----- Variables, Pins -----*/ int receiver = 2; // Signal Pin of IR receiver to Arduino Digital Pin 2 /*-----( Declare objects )-----*/ // Setup of proper sequencing for Motor Driver Pins // In1, In2, In3, In4 in the sequence 1-3-2-4 IRrecv irrecv(receiver); // create instance of 'irrecv' decode_results results; // create instance of 'decode_results' void setup() { irrecv.enableIRIn(); // Start the receiver Serial.begin(9600); // set up Serial library at 9600 bps AFMS.begin(); // create with the default frequency 1.6KHz myMotor->setSpeed(200); // 200 rpm } //main loop to listen for remote IR signal and move motor void loop() { if (irrecv.decode(&results)) // have we received an IR signal? { switch (results.value) { case 0x20DFC03F: // UP button pressed myMotor->step(17, BACKWARD, SINGLE); //I need backward motion to turn my volume knob up //delay(200); this was in the original code but I decided no delay was better myMotor->release(); //saves stepper from using voltage and getting hot at rest break; case 0x20DF40BF: // DOWN button pressed myMotor->step(17, FORWARD, SINGLE); //delay(200); myMotor->release(); break; } irrecv.resume(); // receive the next value } }/* --end main loop -- */

[@Unscientifically]

I love your videos and already subbed. How would you change the speed with the code you provided.

[@robojax]

thank you very much. here is my video showing you how to control the speed kzbin.info/www/bejne/oqOoiGuuobihq7s I used potentiometer or You can use push button kzbin.info/www/bejne/p16raHqYrr1ontE but you can learn from the video to control is with other means like hand gesture kzbin.info/www/bejne/gZekn4idlrh3o6s

[@mr.b7403]

hi robojax, when I am putting in your runtime version, the motor doesn't stop. basically I need the motor to turn 90 degrees and then return back. do you have any suggestions please, kind regards, dave

[@marygellatly8012]

Is there a link were you can download the code

[@robojax]

Wow. I recently updated the link and forgot to update the video link . Thank you for letting me know. The link in the description of the video is updated and working. here for you robojax.com/L/?id=262

[@DilipKumar-uw3ly]

@@robojax The link redirects to the video and datasheet only. Can you please point me towards the code screen. Thanks in advance.

[@kentjohn6325]

Doesnt work, probably something wrong with my code. I wanna use Yours instead and i couldn't find the code you did. can i get the code? The website you posted on other comments cant find it either

[@robojax]

Hello, ever video have a description below it and there is a link to get the code. I have mentioned this in the video.

[@DanialADHOfficial]

i just boght adruino advance kit... i have zero knowlage in coding.. but know i dont understand why i cant make 2 void.. i mean how to make servo and led works at the same time.. because i cant make 2 void loop in coding

[@robojax]

Hi, welcome to arduino. See this 30 minutes course then kzbin.info/www/bejne/g5PFY6uXZryWiK8

[@franzotto448]

Danke für das Video. Thanks for the video.

[@robojax]

you are welcome.

[@gregepkt]

Sir, its possible to control speed in this project with potentiometer? ( in camera slider)

[@robojax]

yes it is possible. The code robojax.com/learn/arduino/?vid=robojax-0293 shows that the motor rotation is controller by the value of _setp. so you can make _step depends on the value of potentiometer (code is here robojax.com/learn/arduino/?vid=robojax-ard-poten). so you have to convert the value of "voltage" which is float to integer make us between zero to 8. // Convert the analog reading (which goes from 0 - 1023) to a voltage (0 - 5V): float voltage = sensorValue * (5.0 / 1023.0); int stepNew = (int) voltage % 8;// Now you can use stepNew to control motor. I have not tested it but this is the idea.

[@gregepkt]

RoboJax Videos . Thank You

[@ricardofunk5848]

@@robojax I can change the value of _step but the speed still the same.

[@黃靖婷-y8k]

Thanks for your great video, sir. I had my circuit arranged just like yours, but it turns out that only one LED on the ULN2003 is on, and the motor didn't move at all. My code is more simple than yours, though. Could you tell me where may I possibly made mistakes?

[@黃靖婷-y8k]

And here is my code: int dpin=2; int cpin=3; int bpin=4; int apin=8; void setup() { pinMode(dpin,OUTPUT); pinMode(cpin,OUTPUT); pinMode(bpin,OUTPUT); pinMode(apin,OUTPUT); } void loop() { digitalWrite(apin,LOW); digitalWrite(cpin,LOW); digitalWrite(bpin,LOW); digitalWrite(dpin,HIGH); delay(1000); digitalWrite(dpin,LOW); digitalWrite(bpin,LOW); digitalWrite(apin,LOW); digitalWrite(cpin,HIGH); delay(1000); digitalWrite(cpin,LOW); digitalWrite(dpin,LOW); digitalWrite(apin,LOW); digitalWrite(bpin,HIGH); delay(1000); digitalWrite(bpin,LOW); digitalWrite(cpin,LOW); digitalWrite(dpin,LOW); digitalWrite(apin,HIGH); delay(1000); }

[@robojax]

Why do you have delay(1000)? Use the code I provided and try it. goo.gl/e8HbaH

[@happycoloring8505]

Im always watch robojax video. Can u help me, i want to make controll stepper motor with keypad 4x4, with 50 combinantion of rotation. Keypad press 3 digit, correct sample: "A11"= motor rotation go to 1000, "A12"= motor rotation go to 2000, until "A61". Can you help me to make demo n code? Thanks before

[@robojax]

Search for #robojax28BYJ_48 or click on it under the video. I have so many videos. and I am sure you can find something or get the idea how to use it for your purpose.

[@happycoloring8505]

@@robojax thanks for ur respon, im just confused code how to function keypad with 3 digit, correct sample, press keypad "A11" the motor rotate 1000, and press "A12" motor rotate to 2000

[@robojax]

Your confusion will be resolved if you learn how to control is with push button. Once you learned that then push button can send this value for you

[@aimannazreen434]

How to make the stepper motor stop working after the rotation? For example after 2 cycle rotation the stepper motor stop working.

[@robojax]

I just wrote a code for you so the motor stops after certain time. robojax.com/learn/arduino/?vid=robojax-0293 You can change it do other things. I have not tested the code but it should work. Good luck. Make sure you get the second code on this page. Let me know if it worked.

[@aimannazreen434]

RoboJax Videos I have another question which part should I change to make the different rotation?

[@robojax]

I have posted complete new code. so copy and past all. If you want the old code with continues rotation just get the top portion. You will compare both codes and find the difference.

[@aimannazreen434]

RoboJax Videos thank you very much.

[@baba_babaa2]

Hey RoboJax, thank you first of all. When using the second code on the page to run for a certain amount of time, it doesn't work. It runs forever. I notice "else count=0" so this a flag to restart everything because if your runtime is 3000, and once the check "count

[@HowToTech12]

how much power do i give?

[@robojax]

Wow, you skipped the video big time

[@HowToTech12]

@@robojax yes i did plz tell me

[@robojax]

Please watch to get answer. I spent 5 to 8 hours to make the video and you can’t even wait to watch it for free? Amazing

[@HowToTech12]

@@robojax wow u are being mad i only asked you a question

[@vinhtranphuc715]

thanks a lot, bro, you save my day.... love you

[@robojax]

You are welcome. ❤

[@DiySpeaker-Vn]

Các bạn có thể tham khảo sản phẩm tại: www.sendo.vn/dong-co-buoc-giam-toc-28byj48-5v-9375261.html

[@DorisVisits]

I have a step motor board using the UN20(03) which has burned out the IC. Can you recognise the components so I can replace them? dorisvisits.com/uln2003-fault/

[@robojax]

The two pieces of red item are 1N4148 diode (SMD type). www.ebay.ca/itm/391780046356 the chip is also Surface mount device (SMD)

[@UzunKamis]

It seems that you are microstepping the stepper?

[@robojax]

stepper.

[@ilhamrahmatmuharam8501]

thanks, its great,,,,how to control the speed without potensiometer ? only use code

[@robojax]

see if you can find something here kzbin.infosearch?query=28BYJ-48

[@Bahanov]

Good Video. You have error in setup function. You define Pin1 two times and definition of Pin4 is Missing. Obviously it works this way but maybe not with the best performance.

[@robojax]

Thank you. I just checked the code and in setup() all pins are correct, see it here snag.gy/nphEgF.jpg please let me if I am missing something to correct it.

[@ger_not_found]

do you know a better code?

[@onthepalehorse]

what is your voltage source

[@robojax]

the board needs 5v. The motor voltage depends on the motor. In this video it is 5 V. Watch the video fully, I have explained it.

[@onthepalehorse]

I know about the 5v, what I don't know is how much amps I need... I tried connecting the motor with a 9v battery but it just vibrated. Then I connected it with 7.5 vdc 500mA power source but same thing happened. Can u pls tell me your power source

[@onthepalehorse]

I know about the 5v, what I don't know is how much amps I need... I tried connecting the motor with a 9v battery but it just vibrated. Then I connected it with 7.5 vdc 500mA power source but same thing happened. Can u pls tell me your power source

[@icangmfy6205]

Hello,It's a good tutorial, I'm interested in your idea, I want to know how if from analog to motor, for example using LDR sensor (A0), the motor will go right if sensor ldr to light, if dark motor will reverse direction, how is the arduino code? thank you

[@robojax]

You can do it by watching two video and should combine them. 1- how to read potentiometer with arduino kzbin.info/www/bejne/ipOvlXSHpapnoKc 2- How to control motor with your hand gesturekzbin.info/www/bejne/gZekn4idlrh3o6s So first you have to understand how motor is controlled then implement it.

[@icangmfy6205]

Okay thanks, how to code if stepper motor will stop when press micro switch?

[@amanshrichandani7365]

Thanks for uploading this video

[@robojax]

You are welcome. سلام

[@robojax]

سلام علیکم. مجرا (کانال) فارسی علم و فن را راه اندازی کردم: لطفا به دوستان تان خبردهید و حمایتم کنید. www.youtube.com/@ilmofan

[@runningwithscissors7715]

great example...mine didnt work (bad controller board,only 3 lights worked)then with new board it only worked if the delay was set to 2! at least it worked!!...thankyou

[@robojax]

You are welcome.

[@enyzvers69]

I have this one... do not know what arduino is, can I run it without "arduino"?

[@robojax]

Arduino is a microcontroller (micro-controlelr) that can be programmed to do things. this motor needs different signal at different angle or time to rotate. Arduino makes the right signal so the motor rotates. If you can do the same type of signal using other means or controllers, it will work.

[@clarkso65]

Thank you so much for the good video!!

[@robojax]

You are very welcome.

[@drewlawrence8488]

How can you automatically reverse the motor when it stalls.? I want to reverse the motor for 3 seconds when the motor stalls. I love your videos because you answer most questions during the video.

[@robojax]

You are welcome. I am glad you found them useful. To change the direction of stepper motor this code you can use dir = true; or use dir = false; so use it after the Case X; where x is 1, 2 , 3 o4. but I have write separate code to accommodate this specific feature.

[@drewlawrence8488]

I need a way to get the motor to reverse only when the motor binds up. If some causes the motor to stop because it locks up I want it to reverse the direction for 3 seconds to release the bind then continue. Can we read the difference in load or voltage sensing an increased load

[@robojax]

It needs a little work but doable. If I want to do it, I have to create the whole project. I am very busy with creating contents. I would suggest posting your question at Arduino official forum: forum.arduino.cc/You can read the voltage difference but it wont' be reliable as there would be unknown factors that changes the values.

[@bellandma007]

#include const int trigPin = 12; const int echoPin = 13; long duration; int distance; int i; int c; const int stepsPerRevolution = 200 ; Stepper myStepper(stepsPerRevolution, 8, 9, 10, 11); void setup() { pinMode(trigPin, OUTPUT); pinMode(echoPin, INPUT); const int stepsPerRevolution = 200; myStepper.setSpeed(60); Serial.begin(9600); } void loop() { int sensorValue = analogRead(A0); float voltage = sensorValue*(5.0/1023.0); Serial.print(voltage); Serial.print(" Volt :"); Ultrasonic(); c=0; if(voltage>=3 && voltage

[@rasikaalwis7345]

Brilliant.Thank you so much.

[@robojax]

You are welcome. Here is my video explaining how to control the speed of this motor : kzbin.info/www/bejne/oqOoiGuuobihq7s or to control like start, stop or change the direction with push buttons: kzbin.info/www/bejne/p16raHqYrr1ontE

[@deepakkumarpainkra6071]

Why don't you gave 5V (power) from auduino board?

[@robojax]

Because arduino can't have enough power (Current) to run the motor. You have supply 5V from external source.

[@deepakkumarpainkra6071]

Thanks for replying, The doubt came because there are many tutorials that have used 5V from arduino board and are working. I am tryring to work with 28bYJ-48 12V motor, i checked the wiring they are correct . But i don't know motor is only vibrating, i don't have 12V adapter or battery, how i can solve this problem any suggestion, will it work from 9V battery?

[@craigallen1418]

@@deepakkumarpainkra6071 Try and change the speed of the rotation. If a stepper motor is made to spin too quickly it will vibrate instead of moving as you have experienced.

[@TheTvRadioDude]

very helpful :) Thanks a lot!

[@robojax]

You are welcome. 👍

[@bullygram]

very well done! thank you

[@robojax]

you are welcome.

[@CRAZYMr12]

i follow this tutorial but my motor only vibrates and doenst move is axis. Is it broken?? Can anybody help?

[@robojax]

1- you haven't connected external power sources. So you have week power 2- The order of wires are not right. check the connections.

[@kirknelson156]

if the states are switching too fast it won't do more than vibrate, need some delay.

[@erjonamiftari616]

There is an error in declaring the outputs in the code, fix it and it works. I had the same problem.

[@CGGizmo]

Thank you for your great effort Can you please explain to me the code for the same Stepper motor for 26 equal steps around 360 degrees and return to the same starting point? best regard Ali

[@robojax]

did you watch the video? that is what I did. Explained the code and provided the code so you can use it. here is the code robojax.com/learn/arduino/?vid=robojax-0293

[@yashgupta8633]

You said one goes to 10 and then 2, 3, 4 goes to 10, 11, 12. So are 1 and 2 both going to 10?

[@robojax]

I can't explained it better than video. So watch it multiple times 3, 4, 5 or even 10 time. this what I would do to learn if I don't get it.

[@KashifJavedForex]

Why this motor vibrate when working?

[@robojax]

The vibration is due to unstable mount of motor. if you try to rotate something with the motor, the motor should be mounted tightly. Or the motor is defective.

[@KashifJavedForex]

I am just trying to run this stepper motor without mounting anywhere but its keep vibrating and does not move.

[@robojax]

Oh, the vibration is due to incorrect wiring or sequence that makes the motor rotate. Please check the wires to be connected to the wrong pins either on arduino or the motor driver board.

[@KashifJavedForex]

Yes the connections from motor into driver are not correct so I connect arduino according to that wrong sequence and now working fine.

[@grandmetallic556]

why my motor is vibrating but not moving

[@robojax]

either code is changed or wiring is incorrect.

[@grandmetallic556]

@@robojax i follow every steps but its just vibrating

[@manojghosh1615]

sir i want to make robotic hand ....control by flex sensor and stepper motor please me the arduino code...my stepper motor 1.8 degree ,bipolar

[@robojax]

I don't have the hand to practice and see it. I have in mind to have project, but until then you gotta find a way to finish your project. Subscribe and watch my videos.

[@MC-rj7mo]

You shouldn't use a stepper motor for a robotic hand. Servo motors work better.

[@stevenhill1878]

u never explained the wires from the drive to the UNO board.

[@robojax]

I have explained them at 4:17 (click on 4:17)

[@anusuyaakuttykrishnan1199]

HI sir....how to add water sensor???send me the coding and way to fix sirrrrrr.....pplllllsssss sir

[@robojax]

Hi, I will try to make a video for water sensor in the coming weeks.

[@anusuyaakuttykrishnan1199]

Robojax sir.......I want it before Wednesday sir......thats my project's last day.....pls help me sirrrrr......when water sensor detect the clothes must move inside....after the water sensor dry the clothes must come ou again....plsss sir........reply me as fast as possible

[@sharatraj9663]

pls help my motor is vibrating but not moving

[@robojax]

you have connected either the wires incorrectly to the motor or to the wrong port on Arduino. If the order of wires are not correct, it will not move or simply make noise.

[@saleemnaseer1279]

Sir where code is available of that vedio...?

[@robojax]

You can get the code from bit.ly/28byj48 and it is available under the video in the description section.

[@tonyperry6702]

good job

[@robojax]

Thank you for not skipping the ads and keep watching them. This will help me a lot.

[@vjaceslavsverdins5174]

Thanks for this video. Is it possible to make this stepper to work faster?

[@robojax]

I have not tested it but it should work. Current code is dalay(1) for 1ms ( milisecond). So change it to delayMicroseconds(100); this is now μS or microsecond which is 1000 times smaller than ms. So 100μs is 10 times faster than ms. So divide 1000/xμs and you will get the speed factor. for example if the 1000/200=5, so it will be 5 times faster. You should not that dalayMicroseconds(x) will accept only integer like 10, 200, 1 but not 150.56. test it and let me know by replying to this comment.

[@vjaceslavsverdins5174]

Maximum for this type is 750, will do a "gearbox" to speed it up.

[@lostrocket9126]

thank you robojax!!!!!!

[@robojax]

you are welcome.

[@wilinton0]

que buen tutorial gracias

[@robojax]

de nada. Me alegro de que lo haya encontrado útil.👍

[@amitbu]

If anyone is interested, I've written a library that controls this motor elegantly: github.com/AmitBu/stepper-motor-control

[@brayanlopez8131]

why you set up have 2 times the sentences whit pin1? pinMode(pin1,OUTPUT); pinMode(pin1,OUTPUT); pinMode(pin2,OUTPUT); pinMode(pin3,OUTPUT);

[@robojax]

it should be. Thanks for tell me. but I have to check, how come the program was working with those wrong values. pinMode(Pin1, OUTPUT); pinMode(Pin2, OUTPUT); pinMode(Pin3, OUTPUT); pinMode(Pin4, OUTPUT);

[@wdujsub7902]

it is working just fine, because these pins are set as outputs by default

[@jacobabraham9944]

​@@wdujsub7902 were is pin4

[@alaafantazia7718]

thank you very much

[@robojax]

You are welcome.

[@xuanhoadao1992nd]

Very good, thank sir

[@robojax]

Thank you.

[@halamkajohn]

forward lllh llhh llhl lhhl reverse lhll hhll hlll hllh : inverter chip with diode protection. bill rockstroh (ww2) at radiac abrasives i think would just put this at logic chips. i did a few boards with logic chips. first guess- selector chip with 0v 5v. 4 bit . now if the stepper motor starts to skip. a spring may havesettled that question somewhere.

[@arduinohobby]

Подключение шагового двигателя 28BYJ-48 с драйвером на микросхеме ULN2003 к Arduino Uno kzbin.info/www/bejne/bpOQapeooqeDirs

[@robojax]

Я не уверен, знаете ли вы или нет, но когда вы публикуете ссылку, она чаще всего рассматривается KZbin как спам и оставляет ее для просмотра и одобрения. Ахмад из Канады

[@sultan7679]

Thanks

[@robojax]

You are welcome.