Hello. I am pretty new to python and working with firmata I am trying to play around with an arduino .

Here is what I want to happen:

• Set arduino up with an LED as a digital out

• Set potentiometer to analog 0

• Set PyQt timer up to update potentiometer position in
  application

• Set a threshold in PyQt to turn LED on (Analog in has 1024bit resolution, so say 800 as the
  threshold)

I am using this firmata library : Link

Here is the code that I am having trouble with:

import sys from PyQt4 import QtCore, QtGui from firmata import *

 # Arduino setup
 self.a = Arduino('COM3')
 self.a.pin_mode(13, firmata.OUTPUT)

 # Create timer
    self.appTimer = QtCore.QTimer(self)

    self.appTimer.start(100)
    self.appTimer.event(self.updateAppTimer())


def updateAppTimer(self):
    self.analogPosition = self.a.analog_read(self, 0)
    self.ui.lblPositionValue.setNum()

I am getting the error message:

Traceback (most recent call last): File "D:\Programming\Eclipse\IO Demo\src\control.py", line 138, in myapp = MainWindow() File "D:\Programming\Eclipse\IO Demo\src\control.py", line 56, in init self.appTimer.event(self.updateAppTimer()) File "D:\Programming\Eclipse\IO Demo\src\control.py", line 60, in updateAppTimer self.analogPosition = self.a.analog_read(self, 0) TypeError: analog_read() takes exactly 2 arguments (3 given)

If I take 'self' out I get the same error message but that only 1 argument is given

What is python doing implicitly that I am not aware of?

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