Generating Arbitrary Waveforms

8 Apr 2023

Displaying graphics on an oscilloscope is an interesting exercise and I decided to do this as part of a waveform generator road test. It turned out to be quite a process, involving 9 different software programs so I thought I would make a separate blog about the journey. Now that I know more about it, I would do it differently in the future, but this is the story of what I did.

This is the wav to csv python program:wav2csv.zip

This is the csv to bin python program:mp750511_csv_to_bin.zip

Here is a link to the road test where I use this technique:

/products/roadtest/rv/roadtest_reviews/1679/multicomp_pro_mp750511_arbitrary_waveform_generator

Here is a link to another method that is more capable and more general, but it doesn't use this waveform generator:

https://www.youtube.com/watch?v=aLJeInPJ9oo&ab_channel=HenryBirdseyeJr.

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beacon_dave over 2 years ago

This reminds me of a project almost 40 years ago, that was published in the Jan '84 edition of 'Electronics Today International' for a 'vector graphic display' using a Sinclair ZX81 home computer.

https://www.computinghistory.org.uk/det/22831/Electronics-Today-International-January-1984/

ETI simplified things a little by using all straight lines in their logo
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shabaz over 2 years ago in reply to beacon_dave

One of the first lab tasks at the uni I went to, was to make a castle shape on the oscilloscope, using a microcontroller dev-board that they supplied. We only used the normal sweep mode (not XY mode) but it was a fun exercise to get to know how to use the microcontroller and the oscilloscope trigger settings!
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dougw over 2 years ago in reply to shabaz

A castle shape could be made with the supplied editor, no other software would be needed.
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beacon_dave over 2 years ago in reply to dougw

I suspect that depends on the shape of the castle ?
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dougw over 2 years ago in reply to beacon_dave

It can do any line drawing that doesn't go backwards in time...
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dougw over 2 years ago in reply to shabaz

I don't recall any of my labs being much fun. It now seems a bit odd to me that they would design lab tasks in that way.
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dougw over 2 years ago in reply to shabaz

I don't recall any of my labs being much fun. It now seems a bit odd to me that they would design lab tasks in that way.
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