Spying on People With Guns

Talking to your Arduino, from Python, on Cygwin

December 3, 2007 · File under Electronics

It took me an hour or so of googling & trying stuff to figure this out (especially "/dev/ttyS2"), so I'll put this here in hopes of helping future generations.

Install pyserial. Not the windows installer -- download the source and then do this in cygwin: $ python setup.py build $ python setup.py install

Now you can connect to your Arduino from Python, inside Cygwin thus: $ python >>> import serial >>> s = serial.Serial('/dev/ttyS2', baudrate=9600) # assuming COM3 >>> # use /dev/ttySn where n = COM port - 1 >>> s.writeln('hello\n') >>> print s.read(s.inWaiting())

Here's some Processing code to test with:
void setup() { Serial.begin(9600); } void loop() { if (Serial.available()) Serial.print(Serial.read(), BYTE); }

Spying on People with Guns

Talking to your Arduino, from Python, on Cygwin

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