ankitaggarwal011 / piscope Goto Github PK

I had some problems to get pylab up and running on my pi. I tried to install them through pip install pylab.
Maybe you could mention that the needed dependencies can be installed through
sudo apt-get install python-numpy python-scipy python-matplotlib python-tk

Currently, only ADS1015 analog to digital converter is supported by this project. It would be beneficial to add support for more ADCs, for example MCP3008.

The interface protocol could be either of the supported protocols by Raspberry Pi, for example, I2C, SPI, etc. While the library is implemented in Python, it is possible to use interfaces implemented in C using CPython for better performance.

Any suggestions are welcome. Thanks!

Trigger is an important feature of the oscilloscopes. The feature has been suggested and requested by users as part of the feedback.

It's possible to implement the triggers in two ways:

• Hardware trigger: This method would require the ADC chips to include a digitally programmable comparator (e.g. ADS1015). This would not work for all ADCs.
• Software trigger: In this method, one can simply compare the measured value with the trigger value and thus plot the required signal. This is easy to implement and would work irrespective of the type of an ADC.

Since the support for more ADCs are planned, it would be better to go with software triggers. Any suggestions are welcome. Thanks!

Hello I'm a newbie to the Pi and Python I'm getting this error with my new Raspberry Pi 2 but this code worked flawlessly with my old Raspberry Pi Model B. Any Suggestions on what might be causing this error? Thanks

root@raspberrypi:/home/pi/PiScope# python example_oscilloscope.py
Initializing the PiScope...
Setting up the channels...
Plotting will start in a new window...
Reading channels...
Exception in Tkinter callback
Traceback (most recent call last):
File "/usr/lib/python2.7/lib-tk/Tkinter.py", line 1437, in call
return self.func(_args)
File "/usr/lib/python2.7/lib-tk/Tkinter.py", line 498, in callit
func(_args)
File "/home/pi/PiScope/PiScope.py", line 122, in draw
self.read() #read current values
File "/home/pi/PiScope/PiScope.py", line 111, in read
adc = ADS1x15()
File "/home/pi/PiScope/Adafruit_ADS1x15.py", line 142, in init
self.i2c = Adafruit_I2C(address)
File "/home/pi/PiScope/Adafruit_I2C.py", line 40, in init
busnum if busnum >= 0 else Adafruit_I2C.getPiI2CBusNumber())
IOError: [Errno 2] No such file or directory
Quitting program.