How to implement Oscilloscope for realtime-plotting?



  • Hello,
    I'm controlling temperature using PID and I wanna Plot PID output on Oscilloscope using raspberrypi. what would be the best way to implement oscilloscope for realtime plotting??

    Help would be appriciated.

    Thanks.



  • @_bhum could you confirm your requirements?
    do you want to use a Raspberry Pi as a oscilloscope? If so there are some options (although not involving Qt framework) like:

    1. PicBerry: Digital Oscilliscope and Function Generator (MatlibPlot)
    2. MagPi #71 oscilloscope: building an oscilloscope using a Raspberry Pi and an Arduino (Python/Pygame framework)

    If you indeed want to create a Qt application running in the Raspberry Pi and plotting the values read from the PID, I'd suggest go with Qwt (warning: I've never used it).



  • @Pablo-J.-Rogina Thank you sir. Im looking for Qt application ruuning inthe raspi.



  • @_bhum Ok, so Qwt library should help. You may want to use one of the examples I mentioned (i.e. the one from MagPi magazine) as a guideline to what/how they draw on screen (I know, it's Python code but it will help...)


Log in to reply
 

Looks like your connection to Qt Forum was lost, please wait while we try to reconnect.