Thanks a lot for this video ! Detailed explanations along with visual support, well done. I've actually been trying to do serial communication between my arduinos and raspberry pis for days now and this is a lifesaver !
Sorry I didn't watch the video long enough to get my answer... This can totally be used in a bi-directional manner, can't it!?? This is going to be great! My Pi ports are tied up because the Pi is using a python driven touchscreen GUI, the physical buttons I want to add have some of the same functions that are built into the GUI. This looks like the perfect solution to have the physical world connected into the GUI. I have subscribed, awesome work!
+Joshua Nulton Yep! I think it's great too which is why I chose to share it. If you're going embedded design you could use the same code with a bare ATMEGA and program it off the Pi's SPI. Smaller footprint, less expensive.
For anyone who has the problem with nanpy-firware when the Arduino is not excepting it"ignoring bad library name". I fixed it by removing the dash("-") from the nanpy-firmware because arduino forbits them.Simply go into the sketchbook directory and rename the nanpy-firmware library. That worked for me
This is fantastic! Might just be what i need for a project i am doing. I plan on controlling two Servos using Hardware PWM and i was thinking to use an Arduino Nano to do that for me, as the Pi only has one Hardware PWM capable pin. This might be the way to go. Thanks for sharing!
Hi in the section cp -avr nanpy-firmware/ ~/sketchbook/libraries I'm getting a cannot create directory /home/pi/sketchbook/libraries no such file or directory could you tell me where I have gone wrong thanks
On your pi be sure to install the arduino ide. Then open up the ide on your pis desktop either thru remote login or locally. This will create the folder. You can create the folder yourself otherwise.
pwm can be a bit jittery on the pi and the pi doesnt have many pwm pins (although I believe newer gpio libraries like RPIO improve on these problems using DMA) or maybe you want an ardunio to take care of all the sensor reading in a system and a pi to take care of all the controls. especially in CPU hungry applications. never done it myself but i know a lot of people do it to split workload
This is a great intro. Just getting into this, wanting to control stepper or DC motors, need Arduino to provide more capable IO pins, and analog voltages.
Hi Alexander! I just wanted to say I've thoroughly enjoyed your guides - especially you one on the MCP3008 ADC which I've used to build a heliostat that tracks the sun's position by monitoring voltages on differently orientated mini PV panels (I switched relays using logic-level mosfets rather than BJTs - I'm not an elec eng so I found sizing them easier based off of Vgd vs. Rsd curves as I could only source rather beefy 12V relays, maybe other people will too? Approximate Beta values for the BJTs at different currents added ambiguity I wasnt very comfortable with, I found the mosfets far more sensible from a first iteration design point of view). Maybe for future projects you could do something more geeky/esoteric like using a Pi as a mobile wifi NAS, a mobile https over wifi based text/binary encryption/decryption mechanism or a car dashcam? Keep it up! Can't wait for the next videos!
What about the Hardware connections..? How is the arduino connected to the Pi, normally plugged in to the USB of the Pi or the serial pins(Tx,Rx) of the arduino are hooked up to the Pi's Tx,Rx?
Using python 2. It throws the exception " 'a' is not defined" not really sure what is going on. Is it the try statement? Shouldn't it be " try: except: finally: " ?
when i open ide says( The Library "nanpy-firmware" cannot be used. Library names must contain only basic letters and numbers. (ASCII only and no spaces, and it cannot start with a number) why this is happening, double copys on the libraries folder??? i continue and check that i have the nanpy on the sketchbook - libraries-nanpy i try to upload it and says that serial port Com 1 not found
This is awesome, but I run into an issue. I was hoping I could get a little help. After launching the IDE I get an error message that says "The library nanpy-firmware cannot be used. Library names must contain only basic letters and numbers." Any thoughts on what needs to change?
Hi Alexander Baran-Harper, I have a project where I need to control a 200 step motor. However, I seem to have encountered a problem: There is a communication delay of roughly 0.01 s between the Pi and the Arduino. This means that each iteration step in Python (to turn the motor by one step) will present this delay resulting in the motor being slow as each command is sent individually. Do you think it would be possible to add a "step motor" function to the nanpy firmware to be called upon through Python on the Pi? My idea is to have the iteration loop done directly on the Arduino to prevent this lag. Thanks in advance! MP P.S. I'm sorry if it's not completely clear!
is it the same as now firmata? The nanpy i mean? I assumed you can now control the sensor, motor etc. with this. an updated 2018 version would be great with raspbian stretch. can't seem to install it.
hi i bought a few Arduinos and they turned out to be fake or cloned with ch340 chip and i cannot do what i wanted i read that i cannot reprogram the ch340 chip to be recognized as a hid joypad is there a way that i can make the rpi and arduino bypass the ch340 chip and get recognised as joypad like the Arduino Leonardo as one thing im trying to make a force feed back simulator steering wheel and because of the ch340 chip cannot be reprogramed to be seen as a hid when plugged in so could i use rpi as hid and use it to controll the firmware on an arduino so use rpi as usb interface and brains use arduino as a slave for pots and motor drivers im a new to rpi and arduino i have rpi zero 2w arduino mega 2560 ch340 chip and uno with ch340 chip i also read that rpi zero can be detected as a hid with a few changes
Can it just as easily go in the opposite direction, using an Arduino with an array of switches SENDING commands to the Pi? My project Pi only had a couple GPIO ports remaining, so I thought maybe I could use a Tiny85 with a couple shift registers connected to a dozen buttons to act as a switch master.
may i ask, isit the arduino processing the code in this case or isit the rpi running it? because i would like to utilise the arduino processing power heheh. Thanks!
thx for you tutorial it is very helpful i try it with a.analogRead but it does not work can you help me how read an analog input to raspberry using arduino as ADC
This is awesome. Just what I have been looking for. I am working on a raspberry pi 4. I know it's been over 5 years that this video was uploaded. I got over several bugs but I am stuck on the first try loop. It keeps failing there. So the Arduino API object a is not finally created. Please can someone help me out?
All, I know this is a old post, but I have a question for you all. I did an exact copy of what was explained in the video, and when I run the program, I see that the switch is 0 and LED off. When I push button, I see "Button on (1)" and then program crashes. Any idea what that could be? Any help would be great!!!!!!! Thank you!
Hi again Mr. Alexander , I would like to ask if this code of mine will work on controlling the dc motors i would also to know if i can also import and use the GPIO of the raspberry pi. thank you. from picamera.array import PiRGBArray from picamera import PiCamera import RPi.GPIO as GPIO import time import cv2 import cv2.cv as cv import numpy as np from nanpy import (Arduino, SerialManager) motor1a = 5 motor1b = 4 motor1c = 6 motor2a = 8 motor2b = 7 motor2c = 9 try: connection = SerialManager() a = ArduinoApi(Connection = connection) except: print("Failed to connect to Arduino") a.pinmode(motor1a, a.OUTPUT) a.pinmode(motor1b, a.OUTPUT) a.pinmode(motor1c, a.OUTPUT) a.pinmode(motor2a, a.OUTPUT) a.pinmode(motor2b, a.OUTPUT) a.pinmode(motor2c, a.OUTPUT) def froward(): a.digitalWrite(motor1a, a.HIGH) a.digitalWrite(motor1b, a.LOW) a.digitalWrite(motor2a, a.HIGH) a.digitalWrite(motor2b, a.LOW) def reverse(): a.digitalWrite(motor1a, a.LOW) a.digitalWrite(motor1b, a.HIGH) a.digitalWrite(motor1a, a.LOW) a.digitalWrite(motor1b, a.HIGH) def rightturn(): a.digitalWrite(motor1a, a.HLOW) a.digitalWrite(motor1b, a.HIGH) a.digitalWrite(motor2a, a.HIGH) a.digitalWrite(motor2b, a.LOW) def leftturn(): a.digitalWrite(motor1a, a.HIGH) a.digitalWrite(motor1b, a.LOW) a.digitalWrite(motor2a, a.LOW) a.digitalWrite(motor2b, a.HIGH) def stop(): a.digitalWrite(motor1a, a.LOW) a.digitalWrite(motor1a, a.LOW) a.digitalWrite(motor1a, a.LOW) a.digitalWrite(motor1a, a.LOW)
Hello, I wanted to connect more than 1 sensors to my pi which uses Rx and Tx pins and for that I am thinking of using arduino with pi as arduino can have software serial. Is there any way I can do this using Nanpy?
This seems like the best way to control hardware with a Raspberry pi. Two things didn't seem to work right. When I tried to create the libraries the message said library names couldn't have dashes so I deleted the dash. Second, when I tried to upload the library to the Arduino I got a compile error. No or missing "SPI.h". Next, I created another sd card from scratch. What should I try next?
Sir I have another question....... I download other arduino library..... how I suppoesed to import them? I know how to use the pre-installed library.... how about the new one?
I've been using this tutorial to control multiple Arduinos using the RPi. However, every time I disconnect/reconnect an Arduino, the device path for the Arduino changes. For my application, it is critical that the program can uniquely identify each Arduino board, perhaps two Arduino Megas, and assign the correct device path when establishing connection. It would be catastrophic if the board IDs were to unknowingly switch. I've experimented in the /sys/bus/devices/ folder on my Pi looking for a way to attribute a specific piece of hardware to a particular device path, but had limited success. Is there a simple solution that I'm overlooking?
yes, pyudev is a wrapper for udev which is used to USB devices. You can write a function where when any USB device is connected, its file path is recognised by pyudev and then use that.
+SirJackyMan I assume it would work on Windows. The nanpy package is a Python package. I assume any machine / OS that can run Python can run the nanpy module. I haven't tried it myself, though.
When ever I try to upload the nappy library to the arduino I get this: In file included from MCP41xxxClass.cpp:1:0: cfg.h:87:1: error: 'cd' does not name a type cd ..
Hi Alexander Baran-Harper, My project is making a controller for a robotic arm. I'm proposing that the the feedback signals from the shaft encoders and the limit switches be read by the Raspberry Pi....An inverse/forward kinematics algorithm will be deployed onto the Pi to which appropriate signals will be generated by the raspberry Pi and be sent over to the Arduino board for PWM signal generation that will control my joint motors...My arm consists of 6 motors including the gripper motor. I am very much interested in your proposed master-slave protocol. Will the nanpy firmware be compatible with my proposed design??? THanks, WQ
I don't see why not. The Uno has 6 PWM pins, so you should be alright. I haven't experimented with the interrupts on the Uno and nanpy which is something that might be used in a limit switch situation.
Hi I keep getting and exception when the button goes high. I get the reading correctly and then it goes to the except statement. Would you have any idea why it would does this or do you need more information?
According to the author 3 years ago "On your pi be sure to install the arduino ide. Then open up the ide on your pis desktop either thru remote login or locally. This will create the folder. You can create the folder yourself otherwise." I just did this and that bit was resolved :-)
I'm trying to read an analog input of arduino in python when i write the code " sensorPin=A1" it gives me an error.python does not recognise analog inputs of arduino.why?can somebody help me?
I get the following error: Traceback (most recent call last): File "/home/pi/Desktop/nanpy/blinkLed.py", line 17, in a.pinMode(ledPin, a.OUTPUT) NameError: name 'a' is not defined >>> Why is that?
Sir, I have a question, so how can you import the servo package for arduino? In arduino IDE I just type #include , how I supposed to do that in python code?
+高原 Around 3:30 I show you how to get into the configuration file where you can choose which packages you will be uploading to the Arduino. You'll need to ensure you have servo enabled there. Then on your python script you'll want to create a servo instance with servo = Servo(9, connection=connection) where servo is the name of the instance, connection is your connection, and 9 is the pin you connect to. Then to control the servo: servo.write(##) Where ## is whatever number you want, like 90.
Alexander Baran-Harper Sir, thanks for your reply, I will test it right away. Another question, how did you figure it out? Is there kind of tutorial or manual which has detail explaination of each function in nanpy package? Because I am sure I will run into other question pretty soon. I just can not find it online. And that nanpy package didn't have that.......
+高原 The nanpy documentation does not include any meaningful instruction or tutorials in my opinion. There are a few examples on the GitHub repo: github.com/nanpy/nanpy/tree/master/nanpy/examples including one for a servo. The general readme says all adjustments should be made in cfg.h. I contacted Andrea, the author, for further clarification. I felt there was a lack of setup documentation for beginners (such as myself) and this was the reason for creating this tutorial. I think it's a great package, if only documentation were better.
Yes. But it will take me some time. I will be doing another series of videos on a project involving a tkinter GUI that plots sensor data for a user with a nanpy backend that polls sensors connected to an atmega328p (arduino). Stay tuned bud!
+Shaker Al Hashlan Right, and I was referring to the raspberry pi. Plotly is a library that that can be imported into Python. Python runs on any computer, including the pi. My project I was describing would use matlibplot (part of plotly) in a GUI running on the pi, with data being fed to the pi from a sensor. A bigger picture than just focusing on plotly. It'll take time, but I can make it happen. Unfortunately I can't do this full time just yet!
+Alexander Baran-Harper than you very much on the reply, I'm having my thesis now and i got a problem with the motor driver that we bought, its not working on pi so we decided to run it on arduino
I have already passed the installation steps. However, I am having problems in running the program in Python3. I got this error: AttributeError: 'ArduinoApi' object has no attribute 'digitlWrite' Please help me!
Yes. There shouldn't be a problem there - I have done it myself. Although many of my tutorials feature the Raspberry Pi, most concepts can apply to any Linux computer.
Usually the folder is created when you open up the Arduino IDE and save a sketch. You can copy the files to wherever you keep your Arduino user libraries.
Not sure if it was relevant when published but why not just make the PI and the Arduino into MQTT brokers & publish messages from the PI to the Arduino (and back) ? PI: learn.adafruit.com/diy-esp8266-home-security-with-lua-and-mqtt/configuring-mqtt-on-the-raspberry-pi ARDUINO: pubsubclient.knolleary.net/
I cannot believe people still work on computers in such a long winded install setup process.. You can't suggest to me this is the fastest way to setup a system environment
Hi Alaxander, your tutorial was verry helpful! however i'm trying to convert my own arduino code, but it isn't working as it is supposed to. Is there any possible way you could help me rewrite the arduino code into python? if nessesairy for a small payment? if you are interessted please contact me at my e-mail adres: info@jd-webdesign.nl. it is about a RFID (MFRC522) module wich has to work with 4 readers who are switching a relay if you place the correct cards on the correct readers. thank you in advance!
I don't have the bandwidth to help re-write code at this time. However a potential approach to your problem that may lessen the scope of your work is to setup communication between the Arduino and pi and maintain the core functionality of the Arduino code. That is: any reading the Arduino device does is simply transmitted to the pi through serial communication or something like that. It may be simpler than trying to port the code when you're working with custom libraries.
Thank you for your reply. i must say, i have tried to do this over serial communication. This worked fine. my problem was that i need to run another script on my RPi when the right combinations of cards is placed on the readers. It has to run the second script automatically. and since it isn't possible to send commands to your pi over serial i don't know how to do this else than using the nanpy module. do you have any suggestions?
@@jdwebdesign6625 I am unsure what the issue is here. If you have a python script running that is interpreting feedback from the Arduino, why not just employ that script as a module to feed into a master script that then makes decisions based on card reading? The Arduino could be configured to just send readings to the Pi, and the Pi interprets those readings to make decisions. Would that work? Unsure of your application, but an example that comes to mind would be if the card combo 6,7,8,9,10 is dropped, Arduino feeds "6,7,8,9,10" to the Pi, the Pi then interprets that and compares it against a dictionary of combinations, determines you have a "run" and then flashes the word "run" on the screen. To achieve that, the Arduino is simply sending the readings to the Pi. The Pi receives the readings, interprets, and enacts action based off it.
I have a raspberry pi, but can i use PC/laptop VGA I²C DDC port to do this? I want to connect arduino with PC directly without rs232, using the computer's I²C bus
Hi, what if I wanna use mac instead of raspberry. I actually installed everything like in the video, everythin was correct but then when I write the program and run it it says: NameError: name 'a' is not defined and idk what to do, any help?
Thanks a lot for this video ! Detailed explanations along with visual support, well done.
I've actually been trying to do serial communication between my arduinos and raspberry pis for days now and this is a lifesaver !
Sorry I didn't watch the video long enough to get my answer... This can totally be used in a bi-directional manner, can't it!?? This is going to be great! My Pi ports are tied up because the Pi is using a python driven touchscreen GUI, the physical buttons I want to add have some of the same functions that are built into the GUI. This looks like the perfect solution to have the physical world connected into the GUI. I have subscribed, awesome work!
+Joshua Nulton Yep! I think it's great too which is why I chose to share it. If you're going embedded design you could use the same code with a bare ATMEGA and program it off the Pi's SPI. Smaller footprint, less expensive.
I did enjoy this. thank you for taking the time doing it
For anyone who has the problem with nanpy-firware when the Arduino is not excepting it"ignoring bad library name". I fixed it by removing the dash("-") from the nanpy-firmware because arduino forbits them.Simply go into the sketchbook directory and rename the nanpy-firmware library. That worked for me
Raspberry Pi and Arduino should team up and create Raspuino!
Thank you for the tutorial!
Could you show how to controll a servo instead of a button?
I would really appreciate that. :)
This is fantastic!
Might just be what i need for a project i am doing.
I plan on controlling two Servos using Hardware PWM and i was thinking to use an Arduino Nano to do that for me, as the Pi only has one Hardware PWM capable pin.
This might be the way to go.
Thanks for sharing!
Thank you Alexander Baran-Harper
It is very useful video and very clear to flow,
thank you very much
Hi in the section cp -avr nanpy-firmware/ ~/sketchbook/libraries I'm getting a cannot create directory /home/pi/sketchbook/libraries no such file or directory could you tell me where I have gone wrong thanks
On your pi be sure to install the arduino ide. Then open up the ide on your pis desktop either thru remote login or locally. This will create the folder. You can create the folder yourself otherwise.
Why is this usefull? Compared to controlling the system from the Raspberry pi directly? :)
pwm can be a bit jittery on the pi and the pi doesnt have many pwm pins (although I believe newer gpio libraries like RPIO improve on these problems using DMA)
or maybe you want an ardunio to take care of all the sensor reading in a system and a pi to take care of all the controls. especially in CPU hungry applications. never done it myself but i know a lot of people do it to split workload
The question is how to create this folder on Arduino IDE of Raspberry pi GUI? I am just a newbie so, please help me creating this folder.
Sorry to disturb you! I finally created the "libraries" folder in Arduino IDE successfully. Thank you!
This is a great intro. Just getting into this, wanting to control stepper or DC motors, need Arduino to provide more capable IO pins, and analog voltages.
use h-bridge and external power supply for your motors
Thank you so much. It worked perfectly for me!
Hi Alexander! I just wanted to say I've thoroughly enjoyed your guides - especially you one on the MCP3008 ADC which I've used to build a heliostat that tracks the sun's position by monitoring voltages on differently orientated mini PV panels (I switched relays using logic-level mosfets rather than BJTs - I'm not an elec eng so I found sizing them easier based off of Vgd vs. Rsd curves as I could only source rather beefy 12V relays, maybe other people will too? Approximate Beta values for the BJTs at different currents added ambiguity I wasnt very comfortable with, I found the mosfets far more sensible from a first iteration design point of view).
Maybe for future projects you could do something more geeky/esoteric like using a Pi as a mobile wifi NAS, a mobile https over wifi based text/binary encryption/decryption mechanism or a car dashcam?
Keep it up! Can't wait for the next videos!
İt fails to connect
I am using a Raspberry pi 3 b
What about the Hardware connections..?
How is the arduino connected to the Pi, normally plugged in to the USB of the Pi or the serial pins(Tx,Rx) of the arduino are hooked up to the Pi's Tx,Rx?
Using python 2. It throws the exception " 'a' is not defined" not really sure what is going on. Is it the try statement? Shouldn't it be " try: except: finally: " ?
It also does that using Python 3.5.3, idk how to fix it either.
Great video. this is very helpful. thank you
How can i communicate with 2 or more arduino... how can i define the com port for the arduino... and can i do this by using etherne port/ cable??
when i open ide says( The Library "nanpy-firmware" cannot be used. Library names must contain only basic letters and numbers. (ASCII only and no spaces, and it cannot start with a number)
why this is happening, double copys on the libraries folder??? i continue and check that i have the nanpy on the sketchbook - libraries-nanpy i try to upload it and says that serial port Com 1 not found
This is awesome, but I run into an issue. I was hoping I could get a little help. After launching the IDE I get an error message that says "The library nanpy-firmware cannot be used. Library names must contain only basic letters and numbers." Any thoughts on what needs to change?
Hi Alexander Baran-Harper,
I have a project where I need to control a 200 step motor. However, I seem to have encountered a problem:
There is a communication delay of roughly 0.01 s between the Pi and the Arduino. This means that each iteration step in Python (to turn the motor by one step) will present this delay resulting in the motor being slow as each command is sent individually.
Do you think it would be possible to add a "step motor" function to the nanpy firmware to be called upon through Python on the Pi? My idea is to have the iteration loop done directly on the Arduino to prevent this lag.
Thanks in advance!
MP
P.S. I'm sorry if it's not completely clear!
is it the same as now firmata? The nanpy i mean? I assumed you can now control the sensor, motor etc. with this. an updated 2018 version would be great with raspbian stretch. can't seem to install it.
hi i bought a few Arduinos and they turned out to be fake or cloned with ch340 chip and i cannot do what i wanted i read that i cannot reprogram the ch340 chip to be recognized as a hid joypad is there a way that i can make the rpi and arduino bypass the ch340 chip and get recognised as joypad like the Arduino Leonardo as one thing im trying to make a force feed back simulator steering wheel and because of the ch340 chip cannot be reprogramed to be seen as a hid when plugged in so could i use rpi as hid and use it to controll the firmware on an arduino so use rpi as usb interface and brains use arduino as a slave for pots and motor drivers im a new to rpi and arduino i have rpi zero 2w arduino mega 2560 ch340 chip and uno with ch340 chip i also read that rpi zero can be detected as a hid with a few changes
Can it just as easily go in the opposite direction, using an Arduino with an array of switches SENDING commands to the Pi? My project Pi only had a couple GPIO ports remaining, so I thought maybe I could use a Tiny85 with a couple shift registers connected to a dozen buttons to act as a switch master.
may i ask, isit the arduino processing the code in this case or isit the rpi running it? because i would like to utilise the arduino processing power heheh. Thanks!
thx for you tutorial it is very helpful i try it with a.analogRead but it does not work can you help me how read an analog input to raspberry using arduino as ADC
This is awesome. Just what I have been looking for. I am working on a raspberry pi 4. I know it's been over 5 years that this video was uploaded. I got over several bugs but I am stuck on the first try loop. It keeps failing there. So the Arduino API object a is not finally created. Please can someone help me out?
All, I know this is a old post, but I have a question for you all. I did an exact copy of what was explained in the video, and when I run the program, I see that the switch is 0 and LED off. When I push button, I see "Button on (1)" and then program crashes. Any idea what that could be? Any help would be great!!!!!!! Thank you!
This needs a pdf file!
Hi again Mr. Alexander , I would like to ask if this code of mine will work on controlling the dc motors i would also to know if i can also import and use the GPIO of the raspberry pi. thank you.
from picamera.array import PiRGBArray
from picamera import PiCamera
import RPi.GPIO as GPIO
import time
import cv2
import cv2.cv as cv
import numpy as np
from nanpy import (Arduino, SerialManager)
motor1a = 5
motor1b = 4
motor1c = 6
motor2a = 8
motor2b = 7
motor2c = 9
try:
connection = SerialManager()
a = ArduinoApi(Connection = connection)
except:
print("Failed to connect to Arduino")
a.pinmode(motor1a, a.OUTPUT)
a.pinmode(motor1b, a.OUTPUT)
a.pinmode(motor1c, a.OUTPUT)
a.pinmode(motor2a, a.OUTPUT)
a.pinmode(motor2b, a.OUTPUT)
a.pinmode(motor2c, a.OUTPUT)
def froward():
a.digitalWrite(motor1a, a.HIGH)
a.digitalWrite(motor1b, a.LOW)
a.digitalWrite(motor2a, a.HIGH)
a.digitalWrite(motor2b, a.LOW)
def reverse():
a.digitalWrite(motor1a, a.LOW)
a.digitalWrite(motor1b, a.HIGH)
a.digitalWrite(motor1a, a.LOW)
a.digitalWrite(motor1b, a.HIGH)
def rightturn():
a.digitalWrite(motor1a, a.HLOW)
a.digitalWrite(motor1b, a.HIGH)
a.digitalWrite(motor2a, a.HIGH)
a.digitalWrite(motor2b, a.LOW)
def leftturn():
a.digitalWrite(motor1a, a.HIGH)
a.digitalWrite(motor1b, a.LOW)
a.digitalWrite(motor2a, a.LOW)
a.digitalWrite(motor2b, a.HIGH)
def stop():
a.digitalWrite(motor1a, a.LOW)
a.digitalWrite(motor1a, a.LOW)
a.digitalWrite(motor1a, a.LOW)
a.digitalWrite(motor1a, a.LOW)
Hello,
I wanted to connect more than 1 sensors to my pi which uses Rx and Tx pins and for that I am thinking of using arduino with pi as arduino can have software serial. Is there any way I can do this using Nanpy?
you can make vedio on contrloing servo like this please
This seems like the best way to control hardware with a Raspberry pi. Two things didn't seem to work right. When I tried to create the libraries the message said library names couldn't have dashes so I deleted the dash. Second, when I tried to upload the library to the Arduino I got a compile error. No or missing "SPI.h". Next, I created another sd card from scratch. What should I try next?
it seems that a lot of people are having this issue, and so am I. Is there any way to get this working with 2 or more arduinos?
Hey, isn't your LED supposed to toggle on/off in each second if the button is on?
Very good explanation
Sir I have another question....... I download other arduino library..... how I suppoesed to import them? I know how to use the pre-installed library.... how about the new one?
Can’t download the Nanpy sketch to the Arduino, please help!
is it possible to programing the Pi to call arduino functions that are already uploaded to arduino board via serial communication.
Is there a way to get this library to control multiple Arduinos at once? I haven't been able to get it to work
Really well done. THanks!
How can i create a master-slave connection like this, but with an arduino shield connected throw lan cable?
Thank you for the well made video, too many have no value. Would you consider making one for pyFirmata?
can you control the i2c bus on the Arduino in the same fashion?
I've been using this tutorial to control multiple Arduinos using the RPi. However, every time I disconnect/reconnect an Arduino, the device path for the Arduino changes. For my application, it is critical that the program can uniquely identify each Arduino board, perhaps two Arduino Megas, and assign the correct device path when establishing connection. It would be catastrophic if the board IDs were to unknowingly switch.
I've experimented in the /sys/bus/devices/ folder on my Pi looking for a way to attribute a specific piece of hardware to a particular device path, but had limited success. Is there a simple solution that I'm overlooking?
yes, pyudev is a wrapper for udev which is used to USB devices. You can write a function where when any USB device is connected, its file path is recognised by pyudev and then use that.
Hi Alex, great video! Just one question, would nanpy work with windows at all? or does it only work with linux and raspberry pi?
+SirJackyMan I assume it would work on Windows. The nanpy package is a Python package. I assume any machine / OS that can run Python can run the nanpy module. I haven't tried it myself, though.
When ever I try to upload the nappy library to the arduino I get this:
In file included from MCP41xxxClass.cpp:1:0:
cfg.h:87:1: error: 'cd' does not name a type
cd ..
Hi Alexander Baran-Harper,
My project is making a controller for a robotic arm. I'm proposing that the the feedback signals from the shaft encoders and the limit switches be read by the Raspberry Pi....An inverse/forward kinematics algorithm will be deployed onto the Pi to which appropriate signals will be generated by the raspberry Pi and be sent over to the Arduino board for PWM signal generation that will control my joint motors...My arm consists of 6 motors including the gripper motor.
I am very much interested in your proposed master-slave protocol. Will the nanpy firmware be compatible with my proposed design???
THanks,
WQ
I don't see why not. The Uno has 6 PWM pins, so you should be alright. I haven't experimented with the interrupts on the Uno and nanpy which is something that might be used in a limit switch situation.
can you also do this with a lcd display?
Hi I keep getting and exception when the button goes high. I get the reading correctly and then it goes to the except statement. Would you have any idea why it would does this or do you need more information?
I get an exception where it doesn't recognize a.digitalWrite()
I having the same problem. Did you solve it? I hope.
Hi do you have any code for running stepper motor / raspberry pi + arduino + easydriver + NEMA17 . Thank you in advance
What happens when there’s no “sketchbook” folder to move the nanpy-firmware to?
According to the author 3 years ago "On your pi be sure to install the arduino ide. Then open up the ide on your pis desktop either thru remote login or locally. This will create the folder. You can create the folder yourself otherwise." I just did this and that bit was resolved :-)
Can we take the ATMEGA328P chip and use it as slave to?
how do I use Arduino as an ADC for raspberry pi 3.
What code should I use
How can I upload the nanpy firmware to the arduino without a gui?
please explain to me why we need to upload servo.h to Arduino?
we don't. it was just an example of how you could modify cfg.h for your needs
I'm trying to read an analog input of arduino in python
when i write the code " sensorPin=A1" it gives me an error.python does not recognise analog inputs of arduino.why?can somebody help me?
I get the following error:
Traceback (most recent call last):
File "/home/pi/Desktop/nanpy/blinkLed.py", line 17, in
a.pinMode(ledPin, a.OUTPUT)
NameError: name 'a' is not defined
>>>
Why is that?
I'm having the same problem. Were you ever able to figure it out?
is it possible to get data (text, audio) on raspberry pi screen from more than one Arduino, (when Arduinos fix at some distance apart)?
xbee radio transmitters
different or same process for arduino mega? can you make tutorial for nanpy using arduino mega,.. thanks
how to do the same process using wireless bluetooth module ???
I also got the missing SPI.h problem when trying to upload the nanpy-firmware??....Any remedies???
i tried it. seems to work....
Hi I am getting a compiling error when uploading the firmware what can I do to fix it?
did you found the solution i have the sam problem it says "the library nanpy-firmware cannot be used
@@wavyrenac I renamed the file withou the hyphen or space and it got me going. Did you figure this out?
How do we read analog voltages in nanpy?
Sir, I have a question, so how can you import the servo package for arduino? In arduino IDE I just type #include , how I supposed to do that in python code?
+高原 Around 3:30 I show you how to get into the configuration file where you can choose which packages you will be uploading to the Arduino. You'll need to ensure you have servo enabled there. Then on your python script you'll want to create a servo instance with
servo = Servo(9, connection=connection)
where servo is the name of the instance, connection is your connection, and 9 is the pin you connect to.
Then to control the servo:
servo.write(##)
Where ## is whatever number you want, like 90.
Alexander Baran-Harper Sir, thanks for your reply, I will test it right away. Another question, how did you figure it out? Is there kind of tutorial or manual which has detail explaination of each function in nanpy package? Because I am sure I will run into other question pretty soon. I just can not find it online. And that nanpy package didn't have that.......
+高原 The nanpy documentation does not include any meaningful instruction or tutorials in my opinion. There are a few examples on the GitHub repo: github.com/nanpy/nanpy/tree/master/nanpy/examples including one for a servo. The general readme says all adjustments should be made in cfg.h. I contacted Andrea, the author, for further clarification.
I felt there was a lack of setup documentation for beginners (such as myself) and this was the reason for creating this tutorial. I think it's a great package, if only documentation were better.
Alexander Baran-Harper Sir, you really save me this time.... thank you!!!
can you please make a video on how to use plotly and live graph a temperature sensor or any other data collection source
Yes. But it will take me some time. I will be doing another series of videos on a project involving a tkinter GUI that plots sensor data for a user with a nanpy backend that polls sensors connected to an atmega328p (arduino). Stay tuned bud!
+Alexander Baran-Harper that sounds great, but I was referring to the raspberry pi.
love your work in general keep it up
cheers
+Shaker Al Hashlan Right, and I was referring to the raspberry pi. Plotly is a library that that can be imported into Python. Python runs on any computer, including the pi. My project I was describing would use matlibplot (part of plotly) in a GUI running on the pi, with data being fed to the pi from a sensor. A bigger picture than just focusing on plotly.
It'll take time, but I can make it happen. Unfortunately I can't do this full time just yet!
Hello how about analog input does it the same as arduino
how come when I type cd Desktop/, I get Arduino.desktop nanpy as a response whilst your terminal responds with mega DS18b20 NRF24L01 playground
so how can this be used to control a servo?
can you write a code for controlling stepper motors ?
can i mix the code of arduino and python, like if i have my camera detects object the motors that is on arduino will run?
Of course. The code I wrote is all Python as it is. There isn't any C needed (provided the functionality you need is in the library).
+Alexander Baran-Harper than you very much on the reply, I'm having my thesis now and i got a problem with the motor driver that we bought, its not working on pi so we decided to run it on arduino
Hi! When I try to upload the Nanpy sketch/library I get an error Serial was not declared in this scope
nothing works... i am broken. i feel my life energy leaving me
omg, i dont know what i did but i did it. thx for the tutorial thou, pretty good if you ask me
at 6:17 when I typed ls right after desktop) and nthng showed up
I have already passed the installation steps. However, I am having problems in running the program in Python3. I got this error:
AttributeError: 'ArduinoApi' object has no attribute 'digitlWrite'
Please help me!
It's right there in the error code: no attribute 'digitlWrite'
digitalWrite, not digitlWrite.
Thank you very much!!!
I doubt this will work with an additional board
thank you for video.
but the gpio pins are not connected to anything
can i do this in ubuntu , just like downloading nanpy and arduino ide in ubuntu and similar process
Yes. There shouldn't be a problem there - I have done it myself. Although many of my tutorials feature the Raspberry Pi, most concepts can apply to any Linux computer.
i have tried in ubuntu but there is no path sketchbook in the arduino folder. so where i have to copy the nanpy
Usually the folder is created when you open up the Arduino IDE and save a sketch. You can copy the files to wherever you keep your Arduino user libraries.
got error as:
File"buttonLED.py", line 13
print("Failed to connect ot arduino")
^
SyntaxError: invalid character in identifier
that's weird
you really don't need the LED, the ardiono has an internal LED on port 13
It just seems better for the video
Excellent.
"a" is not defined and it fried my resistor
my buttonstate keeps fluctuating between 1 and 0
Check your circuit. Are you polling the pin the button is connected to? If so, ensure your pull down resistor is connected properly.
Looking at code without semicolons is nerve wracking.
Not sure if it was relevant when published but why not just make the PI and the Arduino into MQTT brokers & publish messages from the PI to the Arduino (and back) ?
PI:
learn.adafruit.com/diy-esp8266-home-security-with-lua-and-mqtt/configuring-mqtt-on-the-raspberry-pi
ARDUINO:
pubsubclient.knolleary.net/
10 downloadd
Nic
I cannot believe people still work on computers in such a long winded install setup process.. You can't suggest to me this is the fastest way to setup a system environment
Yes I'm Ironman
Chgv
Hi Alaxander, your tutorial was verry helpful! however i'm trying to convert my own arduino code, but it isn't working as it is supposed to. Is there any possible way you could help me rewrite the arduino code into python? if nessesairy for a small payment? if you are interessted please contact me at my e-mail adres: info@jd-webdesign.nl. it is about a RFID (MFRC522) module wich has to work with 4 readers who are switching a relay if you place the correct cards on the correct readers. thank you in advance!
I don't have the bandwidth to help re-write code at this time. However a potential approach to your problem that may lessen the scope of your work is to setup communication between the Arduino and pi and maintain the core functionality of the Arduino code. That is: any reading the Arduino device does is simply transmitted to the pi through serial communication or something like that. It may be simpler than trying to port the code when you're working with custom libraries.
Thank you for your reply. i must say, i have tried to do this over serial communication. This worked fine. my problem was that i need to run another script on my RPi when the right combinations of cards is placed on the readers. It has to run the second script automatically. and since it isn't possible to send commands to your pi over serial i don't know how to do this else than using the nanpy module. do you have any suggestions?
@@jdwebdesign6625 I am unsure what the issue is here. If you have a python script running that is interpreting feedback from the Arduino, why not just employ that script as a module to feed into a master script that then makes decisions based on card reading? The Arduino could be configured to just send readings to the Pi, and the Pi interprets those readings to make decisions. Would that work?
Unsure of your application, but an example that comes to mind would be if the card combo 6,7,8,9,10 is dropped, Arduino feeds "6,7,8,9,10" to the Pi, the Pi then interprets that and compares it against a dictionary of combinations, determines you have a "run" and then flashes the word "run" on the screen. To achieve that, the Arduino is simply sending the readings to the Pi. The Pi receives the readings, interprets, and enacts action based off it.
Policee
pointless
I have a raspberry pi, but can i use PC/laptop VGA I²C DDC port to do this? I want to connect arduino with PC directly without rs232, using the computer's I²C bus
how this communication done with c code??
will this work on the RaspPi model 3 B?
yes
Hi, what if I wanna use mac instead of raspberry. I actually installed everything like in the video, everythin was correct
but then when I write the program and run it it says:
NameError: name 'a' is not defined
and idk what to do, any help?