how to read arduino data in python.md

how to read arduino data in python

PySerial This module encapsulates the access for the serial port.

Install

Development Software

• Install Arduino Software (IDE) on Windows
• Install Arduino Software (IDE) on Linux
• Install Arduino Software (IDE) on OS X

Requirements

Python 2.7 or Python 3.4 and newer If running on Windows: Windows 7 or newer If running on Jython: “Java Communications” (JavaComm) or compatible extension for Java

From PyPI

• Consider upgrading pip to pip version 18.1 is available:

   python -m pip install --upgrade pip

• Install PySerial to use Python with Arduino

   python -m pip install PySerial

From Conda

• pySerial can be installed from Conda:

conda install pyserial

or

conda install -c conda-forge pyserial

Route in Windows:

   c:\users\name-user\appdata\local\programas\python\python36-32\lib\site-packages

Script Python

-Import serial

import serial

-Establish the port in which the arduino is connected

PuertoSerie =serial.Serial('COM4', 9600)

-In a bucle wait for the response (data) sent from the arduino

while True:
	sArduino = PuertoSerie.readline()
	print (sArduino)

-Script .py :

import serial
PuertoSerie =serial.Serial('COM4', 9600)
while True:
	sArduino = PuertoSerie.readline()
	print (sArduino)

Script Arduino

-Establish a variable that is sending the data:

int sensorValue = 0;

-In the setup () the serial port is initialized in this case in 9600 (same as in the Python script)

void setup(){
  Serial.begin(9600);
}

-In loop () the analog input is received (in this example) by port A0.

-The value of the sensor that will be sent to Python is written to the serial port

void loop(){
  sensorValue = analogRead(A0);
  Serial.println(sensorValue);
}

• Script .ino:

int sensorValue = 0;
void setup(){
  Serial.begin(9600);
}
void loop(){
  sensorValue = analogRead(A0);
  Serial.println(sensorValue);
}

Steps to execute it

1. Make the connection of the sensors on the arduino board
2. Compile and upload arduino script to the Arduino card
3. Running the Python script in console

rute\python name-project.py

Conexion with a example

In the next video show the implementig the example: https://youtu.be/0e9yuELxgFU.

Thank you