Stepper Motor Control with the Raspberry Pi
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- เผยแพร่เมื่อ 15 มิ.ย. 2024
- This video outlines both how stepper motors work, and how to control one using the Raspberry Pi.
Learn more about programming, electronics, and the Raspberry Pi at:
cutequbit.zapto.org
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I happened by chance onto this video. I have to say that your explanation of how Stepper Motors function Is the best and most understandable one I have ever seen. I eagerly look further to viewing your other videos. Thanks
I just wish I had seen this video 10 years or anything in between ago... Great video- explains not even how the control works, but the physics behind it too. Thank you!
Thank you for spending so much time making these videos! They're extremely well done.
What a wonderfully explained tutorial. As someone who likes to know WHY not just HOW things work in the way that they do I can't thank you enough.
My colleagues and I are attempting to construct an automated visual inspection rig using the Raspberry Pi as the PLC and operating the camera module in conjunction with a 12V RGB LED strip.
The motor control will drive a turntable and is more or less the last piece of the jigsaw puzzle and I think you have just helped us solve it. Thank you very much.
Before I watched the video I didn't believe that stepper motor control could be explained thoroughly in less than 10 minutes.
Apparently it can :-)
Outstanding! So clear and still, you manage to go into details. Really good tutorial, thanks. Really well done :)
Really enjoy the explanation and breakdown of components. Great work!
Excellent video! This is the best video I have seen on stepper motors. Thank-you for making and sharing it.
IMHO this is very well though out and wonderfully explained
That has to be the best explanation I have heard on how stepper motors work... thanks for that....sub'd
thank you! Your explanation was super detailed, clear and easy to understand!
Brilliant explanation! Answered heaps of my questions. Thank you so much!
You are a godsend, this has been so helpful in creating a stepper motor face. Which sounds weird, but it'll be great thanks to this tutorial
Finally, I cannot thank you enough. Great video even after al these years.
Liked this video a lot. Seen several stepper motor videos but your's is the best. Keep it up man!
Gaven, excellent explanation of a difficult issue. One of the best like/dislike ratio I have ever seen.
Excellent video and great tutoring!! To everyone who is interested: If you type the motor's name into the amazon search bar, you will find the exact same board and motor used in this video, as well as a board without the leds. The single uln2003a ic is also available everywhere for less than two bucks. I will use my hereby aquired knowledge to build a tiny desktop plotter and a picamera control! ;)
Great tutorial! Thanks for posting!
The info provided is rich, helpful and complete!
thank you very much for this in-depth tutorial... really awesome !
Still works almost ten years later!! 😃
WoWWW!!! What an explanation! 💪🏻🙏🏻😊 Love it!
Great video, very concise. Especially the end. I just skipped there because I knew how the motor worked already.
Thank you so much for this tutorial!! It’s been so helpful
Thank you very much for your videos, your videos are very clear. I really like your videos.
import RPi.GPIO as GPIO
import time
GPIO.setmode (GPIO.BOARD)
ControlPin = [7,11,13,15]
for pin in ControlPin:
GPIO.setup (pin, GPIO.OUT)
GPIO.output (pin, 0)
seg = [ [1,0,0,0],
[1,1,0,0],
[0,1,0,0],
[0,1,1,0],
[0,0,1,0],
[0,0,1,1],
[0,0,0,1],
[1,0,0,1] ]
for i in range (512):
for halfstep in range (8):
for pin in range (4):
GPIO.output (ControlPin[pin], seg[halfstep][pin])
time.sleep (0.001)
GPIO.cleanup()
how to fix "Non-ASCII character /d3f in line 27?
@@windows10person30 Probably a problem with the copy/paste using a special format for a comma or something, try rewriting the line.
@@CrystalDataMusic Thaks, I just typed it ad it worked, thanks!
@@windows10person30 Happy to help!
This is a great video. Very instructive.
this is very well explained. Thanks
Awesome video.
Excellent job, keep up the good work
A great explanation of a process that seems complex. Stepper motors are used in so many applications, knowing how they work and are controlled is very useful. Thanks!
splortz I was use GPIO direct drive 8 digital 7 segment and LCD1602*1 and 12 stepper motors
Great tutorial! Amazing!
Awesome tutorial!
The control board I used came with the stepper motor. Aside from the debugging LEDs (with resistors) it only has an ULN2003AN chip.
With regards to the pins, 4 GPIO pins attach to 4 pins on the board (labeled IN1, IN2, etc...) and ground and 5V attach to a second 2 pin header. Hope that helps.
Would it work without it?
I really appreciate your excellent explanation of stepper motors and using Python on the Pi. I just happen to have this exact same motor so I used the same seq config in my script. I'm using the Pi to automatically control my wood stove by using a thermocouple as input. Thanks!
thank you for this video, needed
Excellent job!
great tut! i have read several times that rpi gpio is sensitive to overvoltage since its only 3.3v internally, and that motor(-driver)s on top of this may bleed back spikes when the magnets stop... how do you address this in your setup?
Nice info, thanks for sharing it:)
great video!
Brilliant explanation. I could now write my own program. However, I could see that using c# on windows iot and Raspberry pi3. The same time delay makes my motor much slower then yours. What could the reason be?
nice explanation .I like it
Good stuff! Thanks!
What if you wanted the stepper motor to turn the other way round? Would you just reverse the array elements?
Also curious how many of these motors and control boards can you use with a single pi? A project I'm thinking of would required 3-4.
The Pi has 17 GPIO, which means you could run 4 stepper motors directly from the Pi (as each requires 4 GPIO pins), though some of those pins may need to be reconfigured, such as the UART pins. If you need more GPIO pins, check out the MCP23017 I2C port expander.
Very informative video.
Bro please let me know how to reverse the direction?
would love to know if you need the stepper motor control board... The stepper motor i have is from a printer and has its own separate power cable. Could i go straight from the GPIO into the stepper then? considering the stepper motor isn't getting the power from the Raspberry pi?
Thank for your clear TH-cam Stepper Motor Control with the RPi,
As a beginner wish to test around my pi with the stepper Motor Control , as shown, how can I obtain the sample py code. Do you leave the demo code online? Thank you.
Excellent. Is it "ULN2003 Stepper Motor Driver" used ?
Very very very good job !
Great video thank you so much for the help!!! One question, how would i make this go counter clockwise? :)
So what aplacatoin do I run the code in? And in the python 3 application it says ControlPin is an invalad syntax.
great video indeed
So in order to spin it the other direction I just have to read the array (first dimension) from behind (index 7, 6, 5, 4, 3, 2, 1, 0)
Right?
This mentions the motor model # but not the control board and which pins specifically on the pi needs to go to which pins on the controller board.
very well done
Excellent!
Hello Gaven !!
I have a doubt, I raspberry pi 2 and I'm not getting set to run 120 degrees ie it go back and forth automatically, you can explain to me please?
Thank You
Adalberto / Brazil
this is nice thank you very much
Hi, it is also possible to connect several RaspberryPiB + by the number of training with each other / and to be able to constantly expand inputs? Which then of course be controlled with a Python script?
I have bought the motor and the programme also worked. There was also something moving in the motor but this metal part that should move didn't. I opened it and saw that the gear from the magnets did move but it couldn't move the next gear and only scratched it. Does anyone know how to fix this? Thank you in advance.
Do you know how to plug on a simple raspberry p pico ?
How can I make stepper motor stop at particular angle for some time and move again?
Thanks, really nice explanation, very educational. On a closer look I see that at 1:39 the gears inside are not in the right order and the motor won't work as shown. I guess after you initially tore the motor down, when you reassembled it for the video you accidentally flipped the gear next to the blue one upside down.
I'd first try searching the web for a datasheet. If one can't be found, I'd still worry about connecting a GPIO pin directly to a wire which I'm unsure of its function. I'd definitely use protection, at the very least a transistor. The stepper motor is this video uses a darlington array (uln2003).
How would you make it spin faster? Is there a way to make it spin faster without adjust the milliseconds? I'm rewriting this code in JavaScript and can't seem to make the timer take a value less than 1 millisecond
Can this motor be use with a controller like a b10k?
Can u post the code pls?
This may sound a stupid question, but I don't want the motor to run a prewritten program, I would like to type commands in to move the motor in a certain direction by a certain amount. Is this possible using python.
Where did you come up with 1ms value for the delay?
Arbitrary?
yes, because it gave him the speed he wanted! you can speed up or slow it down. too fast makes the motor shake and not turn.
great tutorial! Could you please share a diagram?
I get this error please set pin numbering mode using GPIO.setmode(GPIO.BOARD) or GPIO.setmode(GPIO.BCM). How do I fix it?
Can you make a stepper motor rotate 52.24 degrees only using raspberry pi or Arduino? how? what about a DC motor?
how this be wired up using a raspberry pi 3 and jumper wires
Hervorragendes Video! Hut ab, vor jemanden, der sich soviel Mühe gibt.
Leider sieht es so aus, als muesste man das Listing abschreiben. Dennoch: TOLL
I like the way you assume he speaks german lol
thanks m8!
Hello.Can you show how to solve gpio get permission, add group ...etc. ? Pi4
Hey, is it possible to spin the motor faster with a simillar or different code? And how you would do this?
One way would be to reduce the time delay, but eventually, the motor won't be able to respond because it's so fast. Maybe you could look into a faster sequence of coils? I'm not sure
Which driver is used here!?
Are the lights on the stepper motor supposed to come on as soon as power is applied or only when the code runs?
Kim W Thank you very much!
Where do you put wires though????
What is this daughter board control board?
What did you use the lan cable for? Connection to a laptop?
+Štefan Restock Probably to SSH into the Pi from another computer.
And tadam you can easily connect MCU to any computer, x86 desktop, or Pi using USB (use old cellphone serial cable or brew it yourself with FT232/CP21xx chip)
Also, why do you (seemingly) not consider how much current the motor will be drawing from the RPi 5v pin?
0,5mA for every pin set to 1 - just measured
I try the code but it keep send me error "attribute error : 'int' object has no attribute 'seq')
Most people struggle with controlling the speed of the stepper motor, more than controlling the location and step control.
Since I need 4 GPIOs for one stepper motor, how can I address let's say 4 different motors? Or 4 motors and 3 servos? Or a bunch of motors and some GPIOs for other sensors?
You have to buy multiple pi's.
+Harm Prins I bet there's controller boards out there that can run several stepper motors.
John Michael Stock yeah looking at my comment one year later makes me realise it was kinda dumb. using i2c would be the best solution in my opinion, because you could, if you really wanted, control 32 steppers using only the two i2c pins. and of course, there are microcontrollers designed to run stepper motors which would work too.
and reading your comment after 2 years saved me !! I was so worried about this as well hahaha... btw can you please tell me which i2c chip you used... i am kind a new to this actually... I was looking at L298N chip... not sure if that's the right one :3
you could write a function that moves the motor by a given amount, and get this amount from the user using raw_input. I'm no expert, but I think that would work.
Not that I'm an expert here, in fact very far from it, but I think your last time.sleep(0.001) line should be indented in one more tab so it starts under the last GPIO.output line. Spent quite a while trying to get this to work and for me found it was the problem. All OK now though.
what about a pin sheet though
How to change the code to make it rotate counterclockwise?
GPIO.output(ControlPin[pin], seg[-1 * halfstep][pin]) #just multiply halfstep by -1
Is it safe to supply stepper motor directly from PI ?
160 mA for every pin set yo 1 - NOT recommended
I go to aviation mechanic school, and most of my classmates can't even figure out how to flush a toilet. I think it's important for everyone to know.
How do you reset the stepper motor to a fixed spot if for whatever reason you don't make a complete revolution.
Maybe keep a counter that gets incremented for every (half) step you take, and then if you want to go back to the fixed spot, reverse the 2D array he has in the video and go up to the amount of steps you took in the first direction.
Can anyone, please, tell me if I can use ControlPin=[7,11,13,15] in Raspberry Pi 3 also?
Yes, you can, they are all GPIO.
the link doesnt work
good python program!
luckily i had the motor and shield