How to implement Oscilloscope for realtime-plotting?
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wrote on 30 Oct 2018, 05:57 last edited by
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.
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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.
wrote on 30 Oct 2018, 12:50 last edited by@_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:- PicBerry: Digital Oscilliscope and Function Generator (MatlibPlot)
- 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).
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@_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:- PicBerry: Digital Oscilliscope and Function Generator (MatlibPlot)
- 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).
wrote on 31 Oct 2018, 10:07 last edited by@Pablo-J.-Rogina Thank you sir. Im looking for Qt application ruuning inthe raspi.
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@Pablo-J.-Rogina Thank you sir. Im looking for Qt application ruuning inthe raspi.
wrote on 31 Oct 2018, 11:56 last edited by@_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...)
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