Arduino and Python Serial Communication with PySerial Part 1

[@SmilesChimichanga]

This is the best video I've found on this subject, Very clear breakdown of how the data is generated/transferred/handled. Thanks a lot!

[@AliG.G]

Indeed one of the best by far

[@yoente]

True

[@fibulacat5025]

This is the best tutorial I've ever seen. Thumbs up.

[@chrismartinez9735]

This is an excellent series. Every module is well articulated. I learned a lot!

[@yeshu9985]

quick tip: close ur serial monitor before u start ur python code or else u would end up getting an error

[@soumyadipdutta17]

Thanks

[@jackmanjls]

This is an excellent presentation. Clear, concise and enough detail to make this extremely useful. The only comment I would have is that the rate at which you poll the arduino. From what I roughly calc...The actual conversion took 4.58 µs for 12 bits in single conversion mode with a 2 MHz ADC clock. If you read any faster than that you may get inconclusive data. Any comments?

[@markm817]

Sir， you said so clear that I can understand the knowledge, thank you wholeheartly.

[@rsa4510]

Absolutely great tutorial! A lot of times, people posting "how to" videos skip the basics in their explanations. This leaves the beginner confused and unable to enjoy the steps associated with learning. I fully understood this tutorial, and I have hope that it will let me debug a related issue I'm having with my own application. Thanks for your work.

[@stefanopadoan8684]

Fantastic! Simple, clear, useful! Thanks a lot!

[@ArulFrances]

Great Explanation! Keep up the good work! Thanks for sharing the amazing information!

[@WaveShapePlay]

Thank you for your kind feedback!

[@rightdelo]

thanks for teaching and breaking it down into simple-to-understand terms. THANKS

[@9205aidme]

Great work, keeps it really simple, but it works, gave me just the start I was looking for. Running Python 3.8.3

[@WaveShapePlay]

Great to hear Gregory! That is definitely my goal. Thank you for the feedback!

[@vyashas4483]

bro this was the best video that i found on this topic thx buddy. you explained it very well.

[@brandon_wallace]

This series on Pyserial is great and really helpful!

[@HydeParkCAC]

Thank you for posting! It was very helpful to see your coding with explanations such as how to use the decode command.

[@WaveShapePlay]

Thank you for the feedback Jenny! It is confusing at first, but once you get the hang of it it becomes more clear!

[@n9583]

thank you so much but i have a question can you use the arduino mega instead of the arduino

[@SimoneIovane]

SerialException: could not open port 'COM3': PermissionError. Why?

[@ruancastro5973]

in my python version (3.7.6) i need to write ".decode('utf-8"')" instead .decode('ascii) . Great Video, thanks from Brazil for share the knowledge with us !

[@WaveShapePlay]

Thank you for sharing Ruan!

[@TyeDougherty]

Thank you sir I was wondering why the decode function was not working!

[@alexoriginals]

Raun, tudo bem, será que você poderia me ajudar? você consegue converter estes valores em integer? a sintaxe valor=int(arduinoData) não funcionou no 3.8

[@MilanKarakas]

Why it works sometime, and sometime not? Windows 10. Installed serial, but it complains that it is not installed. Once worked, then after changing parameters, does not work. Then again work... confusion.

[@cmoulali4835]

I like your videos on the Python ardiuno ,I excited Ooooo

[@Swesh99]

The first video that is realy helpful, thak you so much!

[@darshanpanchal3046]

Hello sir, can i use pyserial to collect and process data from power analyzer or this works only with arduino?......please answer my question

[@WaveShapePlay]

If it uses the Serial protocol then yes. Perhaps look up the documentation for your power analyzer and see if there are existing examples.

[@JNouveau]

is it possible to replace the integer with string?

[@diegogomez1640]

te mereces una medalla de oro al conocimiento, thank you by your aport

[@mohamedjaveed1366]

Thank you so much for this!! Very well explained 👍

[@moshk6460]

hey, why I get this error: serial.serialutil.SerialException: could not open port 'COM3': PermissionError(13, 'Access is denied.', None, 5)

[@wisesoar]

Hi, Thanks for the video. Is there a video talking how to set up the hardware? Which pins did you use from the adruino to computer? Did you use a USB to serial (e.g. UART) adapter or just the USB cable to arduino? Thanks.

[@WaveShapePlay]

Hey - I do not have a video for the Hardware setup, I can make one in the future. For this setup I am using standard USB interface for the Arduino UNO. It uses a USB cable type A/B to connect between the Arduino and the computer.

[@paulramasco6769]

This is cool, will be helpful for my data acquisition devices.

[@prasadvaidya9563]

I’m setting the timeout to 2 while creating the serial object. When I’m reading from serial port I’m checking wether data is present in input buffer by : if(obj.inWaiting>0) : If the data packets are interrupted it hangs in there.... I have given timeout value as 2 still it’s waiting indefinitely... why it’s not considering timeout value????

[@halitekmekci8304]

smooth exercise, thanks for that.

[@lakshagajyothi258]

Hi sir, Is it possible to get the digital inputs and print them as the output using println?

[@ManojKumar-pj8tr]

Thnx this is the best tutorial I have come across

[@WaveShapePlay]

Awesome to hear! Thank you Manoj!

[@CN-kc3em]

How to communication by Usb?

[@fernandohood5542]

what about parity ,stop bit and number of bits?

[@thisunnishama4285]

Hello!....what if i need my python program to give instructions to arduino to do something(like....switch on a specific LED?)

[@rverm1000]

how do you set it up?

[@chinmaykulkarni7835]

Can you explain why we declared ser for serial.Serial()

[@waleedaiad3411]

How can i use hc-12 with arduino using python language?.

[@johnger]

Hello, I need make file pdf or excel with information of Serial

[@perinoveriza1658]

You are the best brother 👍

[@kavyajohnson225]

The video is explained excellently .I have a doubt regarding the timeout value , will be it be delaying the whole data transmission. I am doing a data rate calculation. So my doubt is regarding the timeout parameter. It would be very helpful to if I get a reply

[@shaider1982]

Hi there. Will this also work if the python runs from a raspberry pi? Tnx.

[@edwintoapanta1975]

hi how can i send an excel file from the pc to the arduino

[@elosurfer6238]

Really good stuff, thank you!

[@charanmakkar7732]

smooth exercise, thanks for it sir , awesome stuff and in best easy way

[@WaveShapePlay]

Glad you liked it!

[@controlautomation6875]

Hi Good tutorial !!! Please how we can making python send a float or int data to arduino and arduino get it (not str only )???

[@afettouchemassinissa9149]

hello, thanks for the video : good explanation , but for me when I execute the code it returns to me an error : No module named 'serial' ;;;; what should I do

[@thomasmarques8040]

Hi, that was three months ago. Did you find the solution? I have the same error.

[@sarthakdas815]

I solved it py pip install pyserial and use a conda environment

[@sarthakdas815]

@@thomasmarques8040 I solved it py pip install pyserial and use a conda environment

[@mayanmaster92]

What if the arduino puts out strings and not bytes? Is there a way to get python to output those strings?

[@TheCarloszoom3000]

Hi, I'm getting the following error: AttributeError: module 'serial' has no attribute 'Serial' The libraries serial and py serial are already installed. Could it be that you have Python 2.7 and i have 3.7. If so, how different would the code be? Regards,

[@sarthakdas815]

yep getting the same error

[@sarthakdas815]

I solved it py pip install pyserial and use a conda environment

[@lubanmahfuz8271]

Sir I got error permission Denied problem

[@Inkieto92]

why dont you need the following code in your void setup? pinMode(analogPin, INPUT); don't you have to tell it that it's an input pin?

[@mehmetfesli5775]

This is a very good explanation!!

[@joshuacanlas4679]

great video. May I know the version of python that you are using there and the pyserial. Thanks.

[@WaveShapePlay]

The version of Python was 3.7.

[@kunalgoyal9866]

Please can anyone tell how to compare this arduinodata to integer value please!!!!

[@shaneebkottakkal3491]

Can we upload python code into arduino

[@DurgeshKumar-ui6jq]

I am getting the data from python , but there is significant gap can you help you that. Thanks in advance :)

[@darminaxel5809]

Is pit possible to print this to a webpage with cgi/python?

[@leonhs1476]

I get an error that says No module named 'serial'

[@WaveShapePlay]

Hello - Did you download the pySerial model from the pySerial website? This is not a built-in module, it is from a 3rd party.

[@cindyespindola4946]

This video is great, easy to understeand and it works great. One question if someone can help me, is there a way to get the name of the connected port via script?

[@ユンユン-b8y]

Thank you, this is really helpful to me!

[@roflcopter645]

Thanks for making these videos.

[@rverm1000]

do you have a link to import serial?

[@gracewood6768]

Oh wow i didn't know this Library is commonly used in Arduino =). My thesis uses this library to communicate on Router =)

[@acy1335]

Where do I write this code in?

[@WaveShapePlay]

You can write the python code in IDLE, which is the default Integrated Development Environment (IDE) for Python. For Arduino I would recommend downloading the IDE from their website.

[@vaughntaylor2855]

Very nice tutorial, Thank you!

[@joecandoit5341]

Nice and clear. Thank you! You have a sub.

[@swaralipibose9731]

Best on the best

[@NguyenDat-sn2pb]

how to convert it to int , when i use int(arduinoData) it call the error :: invalid literal for int() with base 10: ''

[@kevindrouglazet2379]

I might be wrong but since the incoming information are bytes, I would assume that you need to use int.from_bytes() to convert the data from bytes to int .

[@NguyenDat-sn2pb]

@@kevindrouglazet2379 thank you , i will try your code

[@NEGOX47]

Nguyen Dat worked?

[@ishansmith549]

very good series

[@punjabilog]

Thank you very much Sir, Its great video...

[@ashabgaming8205]

THX MAN IT WAS VERY HELPFUL!!! You goa like frome me!👍

[@dawkos8631]

error: module 'serial' has no attribute 'Serial' wtf

[@dawkos8631]

I find out, i installed "pip install serial", instead "pip install pyserial" :D

[@WaveShapePlay]

Very good! Yup, pip is great but we have to be accurate!

[@mrberry43]

Many thanks this has helped a lot.

[@rverm1000]

so good and simple. Can you send me more info?

[@reactorark]

Thanks a lot..!! best regads !!! great job,, SUSCRIBED.!

[@idealzone3652]

Im very interesting about this

[@WaveShapePlay]

Great to hear, it really opens up a lot of applications for us!

[@3Dprintingshorts]

I love your videos i hope you will make more advance tutorials regarding uart communication as well. Just sub to the channel.Love you bro

[@user-sd9ff5yj2t]

Nice video. Thanks man!

[@muhajirikhsanushabri9644]

what version of your python?

[@YosefYarinEdri]

i thing its python 3

[@qvd3533]

3.5.1 you can see it at the top of the screen

[@idealzone3652]

Amazing work

[@ДаниилГалимзянов-э4л]

Thanks, very good video.

[@baykus790]

amazing. it works..

[@WaveShapePlay]

😎

[@lazarocamargo]

Excellent tutorial!

[@emreT_T]

If you're getting this error: arduinoData = ser.readline().decode() UnicodeDecodeError: 'utf-8' codec can't decode byte 0xfe in position 0: invalid start byte I found out first byte that coming from arduino is can't convert with decode, so i added a loop like this ; for _ in range (0,2): arduinoData = ser.readline() i am taking first two value and don't use them and added while loop right after this loop. Full code: import serial ser = serial.Serial("COM3", baudrate = 9600, timeout=1) for _ in range (0,2): #It's giving an error for first byte so with this loop we eliminate first two byte. arduinoData = ser.readline() while 1: arduinoData = ser.readline().decode() arduinoData = int(arduinoData) arduinoData = (arduinoData/1024)*5 print(arduinoData) Ps. Yep, my bad that i don't read the error but I have searched this problem for one our and couldn't find anything :')

[@oscara.quirozbarrera7312]

WHY? UnicodeDecodeError: 'ascii' codec can't decode byte 0xff in position 0: ordinal not in range(128)

[@Alfayeeed]

i got the same errror. Any luck solving it?

[@oscara.quirozbarrera7312]

@@Alfayeeed I am trying with pyfirmata, so far is the best option.

[@oscara.quirozbarrera7312]

@@Alfayeeed try this: from pyfirmata import Arduino placa=Arduino('COM4') print("vamos a entrar al for") for i in range(12): placa.digital[13].write(1) placa.pass_time(3) placa.digital[13].write(0) placa.pass_time(1.5) print("primera conexion real",i)

[@tarunkashyap8515]

try this: arData = arData.decode('ISO-8859-1')

[@gebrehiwotmengistu1590]

This is Great! Thank you

[@paulo.galvao]

arduinoString = arduinoData.readline().decode("utf-8") #read the line of text from the serial port dataArray = arduinoString.split(',') #Split it into an array called dataArray may be more easy... github.com/labF212/pyhton-arduino/blob/master/test2serial3.py

[@EunchanPark]

it is a cool video! Thank you

[@sacredinclinations]

great job thanks

[@ShivamKumar-rp8kr]

thanks man

[@banditboy6444]

Have my thumbs up!

[@WaveShapePlay]

You rock!

[@emreakman5007]

Thank you much

[@dennisyildirim2708]

Can I read data from this device; au.element14.com/amphenol-advanced-sensors/sm-uart-04l/ir-laser-dust-sensor-97ac8394/dp/3021584 By only using my computer, and python ? Without Arduino....

[@idus]

its not ardreno Thanks for the video.

[@123hihoo]

KING!

[@idealzone3652]

Thankyou

[@eliredpower9633]

I love you bro

[@charlesklein7232]

im confused? clearly, your audience is more educated then me. im interested in how to do what you are talking about doing using arduino with "PYSERIAL" which is a program. in order to use python you need a program to run it. two are "ATOM" and "PYCHARM" however their is something called "PYSERIAL" would you consider doing a video on how to get these programs to work, how to install them! im running Ubuntu 16.04 on 64 bit and i have "pIP" but am confused about what to download from pyserial. sorry for my "BABBLING," clearly, im confused. it appears your are doing this manually probably using an "idle" notepad that comes with python.

[@WaveShapePlay]

Hey Charles! Pyserial is a 'module'. A module is code that someone wrote, for the purpose of re-use. We can utilize modules that are already created, so we do not start our programs from scratch. PYCHARM is an integrated development environment (IDE). The IDE allows us to write programs and run them. We use a combination of our own code and existing modules to create a program, then run the program in the IDE.

[@jaredjones6570]

Great tutorial!! But.. and I'm sorry, I can't help myself, Ar-dwee-no Not Ar-dree-no

[@razinrafiqrinuddin1373]

how about receiving from python and reading it on arduino?

[@youtuberzp6665]

when i try to run the code in python 3.7 idle why it is showing invalid syntax?