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Project Description

pyFirmata is a Python interface for the Firmata protocol. It is fully compatible with Firmata 2.1, and has some functionality of version 2.2. It runs on Python 2.7, 3.3 and 3.4.

Test status:

Installation

The preferred way to install is with pip:

pip install pyfirmata

You can also install from source with python setup.py install. You will need to have setuptools installed:

git clone https://github.com/tino/pyFirmata
cd pyFirmata
python setup.py install

Usage

Basic usage:

>>> from pyfirmata import Arduino, util
>>> board = Arduino('/dev/tty.usbserial-A6008rIF')
>>> board.digital[13].write(1)

To use analog ports, it is probably handy to start an iterator thread. Otherwise the board will keep sending data to your serial, until it overflows:

>>> it = util.Iterator(board)
>>> it.start()
>>> board.analog[0].enable_reporting()
>>> board.analog[0].read()
0.661440304938

If you use a pin more often, it can be worth it to use the get_pin method of the board. It let’s you specify what pin you need by a string, composed of ‘a’ or ‘d’ (depending on wether you need an analog or digital pin), the pin number, and the mode (‘i’ for input, ‘o’ for output, ‘p’ for pwm). All seperated by :. Eg. a:0:i for analog 0 as input or d:3:p for digital pin 3 as pwm.:

>>> analog_0 = board.get_pin('a:0:i')
>>> analog_0.read()
0.661440304938
>>> pin3 = board.get_pin('d:3:p')
>>> pin3.write(0.6)

Board layout

If you want to use a board with a different layout than the standard Arduino or the Arduino Mega (for which there exist the shortcut classes pyfirmata.Arduino and pyfirmata.ArduinoMega), instantiate the Board class with a dictionary as the layout argument. This is the layout dict for the Mega for example:

>>> mega = {
...         'digital' : tuple(x for x in range(54)),
...         'analog' : tuple(x for x in range(16)),
...         'pwm' : tuple(x for x in range(2,14)),
...         'use_ports' : True,
...         'disabled' : (0, 1, 14, 15) # Rx, Tx, Crystal
...         }

Todo

The next things on my list are to implement the new protocol changes in firmata:

Release History

Release History

1.0.3

This version

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1.0.2

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1.0.1

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1.0.0

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0.9.5

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File Name & Checksum SHA256 Checksum Help Version File Type Upload Date
pyFirmata-1.0.3-py2.py3-none-any.whl (15.4 kB) Copy SHA256 Checksum SHA256 3.4 Wheel May 17, 2015
pyFirmata-1.0.3.tar.gz (14.1 kB) Copy SHA256 Checksum SHA256 Source May 17, 2015

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