Simple Python Code

Projects Interfacing w/ Software on the Computer
1

I was wondering does anyone OR can anyone tell me a simple python code to test my arduino 1280? I just want to maybe learn how to blink one of my led's that are connected to my pwm outputs.

Thank you

2

An arduino will not run python code AFAIK. The language is C++ (based).
Can you state more clearly what you want?

3

Just that, I just wanted to test my lights using python. I saw this page Arduino Playground - Python, and thought it was possible. But I am not under UNIX i am under windows 7. I wanted to try and start building a python script that would allow me to control my lights or arduino.

4

this is indeed possible, but your question was unclear.

You need to create the following configuration:

PC with Python ---- serial line----- Arduino with C++ sketch --- LED

The python script sends commands over the serial line, the arduino receives them, interprets them and switches the LED

Arduino code for led 13 controlled by serial commands (character 1 and 0 )

void setup()
{
  Serial.begin(115200);
  pinMode(13, OUTPUT);
}

void loop()
{
  if (Serial.avalable())
  {
    char c = Serial.read();
    if (c == '1') digitalWrite(13, HIGH);
    if (c == '0') digitalWrite(13, LOW);
    // other commands here
  }
}

furthermore you need to make a small pythonscript that uses pySerial to send the chars over the line.

5

Hi! I've created a Python application to communicate with Arduinos, maybe you find it usefull... I don't have a Window PC to test it, so, I don't known if it even works on it. If don't work, you could install an Ubuntu with VMPlayer o VirtualBox.

The project is on GitHub: GitHub - hgdeoro/py-arduino-proxy: [renamed to py-arduino] Communicate with Arduino from Python (DEPRECATED! Please see py-arduino).

It's very easy to use, and there is a simple UI (very simple at the moment):
- YouTube.

To blink the onboard LED, you would use something like:

import time
from arduino_proxy import ArduinoProxy
proxy = ArduinoProxy('/dev/ttyACM0')
proxy.pinMode(13, ArduinoProxy.OUTPUT)
while True:
	proxy.digitalWrite(13, ArduinoProxy.HIGH)
	time.sleep(0.5)
	proxy.digitalWrite(13, ArduinoProxy.LOW)
	time.sleep(0.5)
6

Hi

  1. Install pyserial
    pyserial · PyPI

This blink code is working:

Arduino:

void setup()
{
  Serial.begin(9600);
  pinMode(13, OUTPUT);
}

void loop()
{
  while (Serial.available() > 0){
    char c = Serial.read();
    if (c == '1') digitalWrite(13, HIGH);
    if (c == '0') digitalWrite(13, LOW);
  }
}

Python:

>>> import serial
>>> import time
>>> arduino = serial.Serial('COM4',9600)
>>> for i in range(10):
	arduino.write(1)
	time.sleep(1)
	arduino.write(0)
	time.sleep(1)

-Fletcher