You are a born teach! Seriously most tuts don't have that clear explanation. Need to ask though hopefully I'll get an answer C++ or python? I feel python easier to understand maybe because I'm a little bit familiar with the basics. I will be focusing at 1st on automation building then i would like to learn about creating prothesis that respond muscle movement ect. That's my future aim So python or c++
I'd recommend that you start with Python. C++ is good for programming the Arduino if you want the code to run on the device without any external connection. For development, Python is better.
pyFirmata is a generic interface to the Arduino. It allows you to read the pins and control the digital outputs. The SIM808 has an ATMega328 that likely has custom firmware to read from the GPS and make the data available through Bluetooth. I do not recommend overwriting the Firmware with the Standard Firmata.
Sorry, I'm no specialist in Arduino nor in Python, but to me it looks inconsistent that you make such workaround to the case someone doesn't have the needed library pyfirmata installed, but then you hardcode the port where the Arduino is connected. Is there a way to search for the COM port where the Arduino is connected?
Check out the find_arduino code here: github.com/jckantor/TCLab/blob/master/tclab/tclab.py This can help you find the port automatically for Windows, Linux, or MacOS.
my arduino program stops working when I terminate the consol why??. how can I store my upload inside arduino?? as soon as I close python the arduino board stops working
pyFirmata communicates over a serial port to read and write instructions. The instructions come from the attached computer. When the cord is disconnected, the instructions stop. Embedded code is needed to continue running on the Arduino. Options are MicroPython: apmonitor.com/dde/index.php/Main/SensorMeasurement or the Processing IDE to compile and run C code on the Arduino.
I'm sorry, I'm new in this area, my question is: what's the reason why you define the variable "iterator"? It's the only thing that I didn't understand their function
@@apm such a fast answer, I really appreciate it, do you have some URL or website where I can learn how to make an interface Arduino-Python? It's my last question, thanks!!!
Hi, I'm actually trying to connect my phyton code with arduino using pyserial but I can't run the code so I found your video. I will try this pyFirmata package later but how does the two relate with each other? I mean pyserial and pyFirmata?
pyserial just communicates over a serial connection while pyFirmata also includes the firmware for communication. If you use pyserial, you'll need to write your own firmware such as done here: apmonitor.com/heat.htm
An Arduino likely wouldn't have enough CPU / memory to handle the task. Maybe try a Raspberry Pi or other type of more capable compute modules. Here is some help on the face detection: apmonitor.com/pds/index.php/Main/FacialRecognition
Will this work if you have it not connected to the computer like you can with the default code language of the audrino? Like load the code to it then un plug it from the pc and have it exicute the code?
You would need to use microPython if you want to run Python on the device. The ESP32, Teensy, or pyBoard, or others can run a simplified version of Python.
Thank you for such an informative video!! If it's ok to ask, is there a way for me to control the arduino without having to plug into the computer? (For example, over a wifi connection maybe?)
Yes, there are wireless connections such as Bluetooth. If you write your own firmware (ino) file then you can control the Arduino with no connection. If you want to use Python then you'll need to be connected either with a USB cable or WiFi / Bluetooth.
Hello sir, I am a Macintosh user. Is there a way to use pyfirmata and get the data because I don't have the name as "COM 3 or COM 4".... What can I do??
Can you explain exactly how you back propagated from pyfirmata analog read which is 0 - 1 to ADC 10 bit 0 - 1024 . Is there a way to scale the raw sensor data back to 10 bit ADC ??
Hello, I have installed pyfirmata but when i wrote this: from pyfirmata import Arduino, util. It gave me ImportError: cannot import name 'Arduino' from partially initialized module 'pyfirmata' (most likely due to a circular import). Does anyone know how to fix this?
This can happen if you named your program pyfirmata.py. Try changing the name to something else like test_pyfirmata.py. Here is additional help on pyFirmata: pypi.org/project/pyFirmata/
is it possible to upload the python code to the arduino in the same way you upload a sketch to the arduino? the purpose here being so you can disconnect from the serial port.
Here are some tips on doing this: arduino.stackexchange.com/questions/105/programming-an-arduino-using-python-rather-than-c-c and stackoverflow.com/questions/8114916/is-there-a-way-to-compile-python-code-onto-an-arduino-uno
how can I convert the analog value to the actual value sensor that has been reading? As you've mentioned (value*5000-500)/10 is the same for all kinds of sensors on Arduino Uno?
How to read I2C data received from acclerometer? This averages all the acceleration values and gives an overall acceleration. I want to receive all the data from all three axes.
Here is another I2C device connection. apmonitor.com/dde/index.php/Main/TemperatureSensor Try looking online for Arduino or Micropython code for your device.
hi~ I'm a student from Taiwan. May I ask some question about pyfirmata? I use Arduino uno & DHT11 senser to try this example. But I can't access the data from analog port. I can get right data in arduino Serial port monitoring window. however, I can't get any data in python. if time is allowed, hope you can help me to slove this problem. Thanks
+Yu Chieh Huang, the DHT11 or DHT22 produces a digital signal (series of 1s and 0s) that you need to decode to get numbers. You should connect to a digital pin instead of an analog pin. Here is some additional help: www.circuitbasics.com/how-to-set-up-the-dht11-humidity-sensor-on-an-arduino/
hi Sorry for asking more question. I change my sensor to digital pin but I still can't get any data. I also use YL-69 Moisture Sensor . However it can't work too. Both digital and analog pins didn't work. I try two ways to use read() 1. define the pin at first. pin_temp = board.get_pin('d:2:i'); result_temp = pin_temp.read() 2.result_temp =board.digital[2].read() I'm not sure if i use in wrong way or not. If you have any idea about this, please share with me. Thanks for your reply
You won't be able to use pyFirmata to read those values. You'll need to use the custom code for DHT11 that is outlined in the link I sent. The digital pin only reads a 1 or 0. The DHT11 sends a series of 1s and 0s that you need to decode such as 11001110000101001000111000011010001010 => T=30 degC and Relative Humidity=25. Those aren't correct 1s and 0s but it hopefully gives you an idea. The DHT11 code should work if you follow the instructions on the link I sent.
if you want to use pyfirmata you'll have to roll your own firmata firmware by adding dth11 header file and use those functions for decoding which is the easiest route to take here. Or else you'll have to write a python decoder but with serial latency I don't know if is feasible to read 1/0s from a digital input over serial and then decode. Edit: Nevermind, I don't think firmata will work. You'll have to use plain pyserial and write custom sketch for arduino.
Try renaming your script file as something else than main.py. Does that help? www.linuxquestions.org/questions/linux-software-2/python-attributeerror-%27module%27-object-has-no-attribute-%27main%27-4175478873/
Yes, here is an offline emulator for the TCLab that is based on an Arduino Leonardo: tclab.readthedocs.io/en/latest/notebooks/04_Emulation_of_TCLab_for_Offline_Use.html There are also emulators such as micropython.org/unicorn/
Hi professor, thank you very much for all videos and tutorials, I'm a big fan of ur work. Is there any way you could provide those images of those circuits (specially in minute 3:35), when you show how to 'do it yourself' the whole thing? Thanks!
Here is more info on building the lab: apmonitor.com/che436/index.php/Main/PhysicalLab and apmonitor.com/pdc/index.php/Main/ArduinoTemperatureControl You can also order one on Amazon or through Paypal.
Thank you. I have a question, Is it possible to add Q-learning algorithm by tensorflow and python? please help me..I want to make q-leaning (reinforcement learning) machine like a crawling robot.
Good afternoon sir, currently I am in school holiday so I would like to self-learning some idea for Arduino. My planning is to connect GUI, control system and database together. My GUI is written in python (currently using jupyter notebook), control system should be Arduino (just wanted to learn Arduino as it is suitable for many project), database is planned to be linked with GUI (watched video from youtube or did I need to create a new database in other method?). I think it would be good to simulate first before I purchase component. But currently I am facing some difficulty on how to connect the written GUI to simulation software. Any simulation software suggested? (hopefully simulation have following specs 1. Have Arduino and Arduino IDE (since I currently I haven’t buy one) Allow to create new component (like if I wanted to have more sensor but the sensor that I wanted didn’t include inside so I can create myself 3. Can connect to my GUI (or it is more preferable that I not to use jupyter notebook?)
Yes, pyFirmata is one way to communicate from python to the Arduino. You can't use Python directly on the Arduino so you need to connect with a serial connection such as with a USB cable.
Thanks for the video !!!! it helped me so mutch. Now i'm looking for a way to send data from text file directly to the serial port (same port Arduino in connected to). Is it possible?
Yes, check out the TCLab project that communicates over a serial USB connection. apmonitor.com/heat.htm See the source code links for Java, Python, and Matlab.
Unfortunately that isn't possible with an Arduino Uno. There are other microcontrollers or microprocessors such as the Raspberry Pi that can run Python.
You probably have multiple versions of python on your computer. Here are some tips on installing packages: apmonitor.com/pds/index.php/Main/InstallPythonPackages
pyBoard is another type of microcontroller that may be able to run pyFirmata as well. pyFirmata is a standard firmware that accelerates development by making standard the interface to the gpio pins.
Both pieces of hardware do very similar things, but I believe the pyBoard to be a bit more expensive in my experience - but if you use an ESP32 running microPython, then the costs come right down. Just starting to play, so not that experienced as yet...
Yes, you can but not with PyFirmata. You'll need to write custom firmware with the Processing Language (C code). There is no way to have it run Python without a serial connection to a computer.
The firmware is a default option in the Arduino IDE. Yes, it is required to run pyFirmata. You only need to load it once, however, and it will stay on the device even if power is cycled off.
.....I know this video is 2 years ago, but it is useful to a beginner like me. When I'm running: board = Arduino('COM6') I got an error: --------------------------------------------------------------------------- TypeError Traceback (most recent call last) in 7 import time 8 ----> 9 board = Arduino('COM6') 10 iterator = util.Iterator(board) 11 iterator.start() ~\Anaconda3\lib\site-packages\pyfirmata\__init__.py in __init__(self, *args, **kwargs) 17 args = list(args) 18 args.append(BOARDS['arduino']) ---> 19 super(Arduino, self).__init__(*args, **kwargs) 20 21 def __str__(self): ~\Anaconda3\lib\site-packages\pyfirmata\pyfirmata.py in __init__(self, port, layout, baudrate, name, timeout) 105 # Iterate over the first messages to get firmware data 106 while self.bytes_available(): --> 107 self.iterate() 108 # TODO Test whether we got a firmware name and version, otherwise there 109 # probably isn't any Firmata installed ~\Anaconda3\lib\site-packages\pyfirmata\pyfirmata.py in iterate(self) 280 received_data.append(data & 0x0F) 281 while len(received_data) < handler.bytes_needed: --> 282 received_data.append(ord(self.sp.read())) 283 elif data == START_SYSEX: 284 data = ord(self.sp.read()) TypeError: ord() expected a character, but string of length 0 found And I checked I'm using the correct port (COM6), no other devices are using the same port. Anyone with the same issue? (running python 3 with UNO) Thanks a lot.
Yes I did, and funny thing is,I found out that if I press the "RESET" button on the UNO board when the code is running this line: board = Arduino('COM6') IT WILL WORK!!!!…......for once it gave me the reading from the Arduino But when I run the code again directly, the error now changed to: SerialException: could not open port 'COM6': PermissionError(13, 'permission denied。', None, 5) I have to unplug the Arduino and reconnect in order to work again, but the above repeated.....I will have to press the "RESET" on the board for the code to successfully run "board = Arduino('COM6')"...
There is a new way to pip install from a Python script. Try this instead: from pip._internal import main as pipmain pipmain(['install','pyfirmata']) The rest of it is the same. Then when you import Arduino, it should work. Here are other instructions on how to install Python packages: ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-Z_Kxg-EYvxM.html
What operating system are you running? If it is Windows then check the device manager as you plug it in. You should see it appear. You may need to adjust the COM port number for the Serial Interface. Here are some additional tips from the TCLab: apmonitor.com/pdc/index.php/Main/ArduinoSetup
hello bhaiyaan maine bhi aisa arduino uno purchase kiya hain aur code editor bhi same hain arduino ka par main usme serial port select nahi kar paa raha hoon so pls make a tutorial on how to download arduino ite editer to how to upload code to arduino uno . Thanks .
You probably installed the wrong package "serial". Try "pip uninstall serial" to remove the package and "pip install pyserial" to install the correct package. More details here: stackoverflow.com/questions/11403932/python-attributeerror-module-object-has-no-attribute-serial
I'm not sure why that's not working. You may try to update the firmware on your Arduino. I'd also recommend that you check the value to see if it is NaN.
Arduino code is very similar to C. Maybe you could find some suggestions online to convert C to Python. However, the Python code won't run on the Arduino.
You can do "pip install pyFirmata" at the command line: pypi.org/project/pyFirmata/ Here are additional details on managing packages: apmonitor.com/che263/index.php/Main/PythonIntroduction See section on "Install Packages with pip (Command Line)"
It is the same on every platform (Windows, Mac, Linux): pip install pyFirmata Here is more information on the package: pypi.org/project/pyFirmata/ and more information on how to manage the packages: apmonitor.com/pdc/index.php/Main/InstallPython
can you help me i need to send an number like '1234' as a password from a python code and receive it on arduino C code and i need to send back the temperature from arduino using sensor to use it in the python code
Check out the TCLab project. We use a serial connection to communicate back and forth to an Arduino. The source code is at: github.com/jckantor/TCLab and apmonitor.com/pdc/index.php/Main/ArduinoTemperatureControl (see apmonitor.com/pdc/uploads/Main/tclab.zip for zipped archive with ino and python source). We send new heater values with a.Q1 and a.Q2 and read temperatures with a.T1 and a.T2.
I don't have that hardware but a quick search online showed that the duemilanove should be able to load the standard firmata. With the standard firmata I believe it should work with pyfirmata.
You probably installed the wrong package "serial". Try "pip uninstall serial" to remove the package and "pip install pyserial" to install the correct package. More details here: stackoverflow.com/questions/11403932/python-attributeerror-module-object-has-no-attribute-serial
You can run Python directly on a Raspberry Pi because it runs Linux. If you want to interface the Raspberry Pi to an Arduino then here are some tips: raspberrypi-aa.github.io/session3/firmata.html
Try installing with pip: pip install pyfirmata Here are more details on package management in Python apmonitor.com/pds/index.php/Main/InstallPythonPackages
You can control a relay module with one of your Digital Output pins. You shouldn't use PWM unless you are using a BJT or MOSFET NPN transistor for the switch ON/OFF. PWM uses cycling at a high rate (like 500 Hz) to give a fractional output. This will wear out the relay module switch.
@@apm can you make a tutorial on it or any article related to it. It will be very beneficial.actually i am making a home assistant. I have almost controlled computer now i am left with lights so i need the suggestion how i can do it. There is only one light in my room
Wow - that is the first time someone has requested that I speak in a different language. I believe that RU-vid has subtitles and may offer translation.
