geewizard!
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RPi Zero W and basic one-channel oscilloscope?

Fri Dec 02, 2022 6:12 pm

I need a very basic one-channel oscilloscope display using a RPi Zero W. This is for a seismometer "stomp" display for a learning center display.

All it has to do is display the voltage waveform of the seismometer and on a big monitor or TV using HDMI or a HDMI-AV converter (which I have). I don't need any of the usual oscilloscope features such as triggering etc.

Anyone know of off-the-shelf products or schematics for such a thing? And that will run on Raspberry PI 32-bit OS?

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neilgl
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Re: RPi Zero W and basic one-channel oscilloscope?

Fri Dec 02, 2022 7:09 pm

Have you looked at the excellent piscope from joan : https://abyz.me.uk/rpi/pigpio/piscope.html or did you want analogue measurements?
Edit or https://www.raspberrypi.com/news/build ... i-arduino/ but using a pico not an Arduino?

geewizard!
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Re: RPi Zero W and basic one-channel oscilloscope?

Fri Dec 02, 2022 8:39 pm

I need analog input only. And I can use the Pico too. I was hoping for just a simple screen with an analog waveform on it.

Thanks.

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neilgl
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Re: RPi Zero W and basic one-channel oscilloscope?

Fri Dec 02, 2022 9:14 pm

Ok that last link maybe good (pico not Arduino)

danjperron
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Re: RPi Zero W and basic one-channel oscilloscope?

Fri Dec 02, 2022 9:29 pm

I need a very basic one-channel oscilloscope display using a RPi Zero W. This is for a seismometer "stomp" display for a learning center display.
Seismograph aren't fast. What speed you are talking about. IT should be below 1Khz.

something like this in python. use pyplot

You just need an adc converter . An ADS1115 or the ADS1015 from automation hat. works great.

or someting like that.
https://www.earthinversion.com/geophysi ... eismogram/ Do your google search.

vffgaston
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Re: RPi Zero W and basic one-channel oscilloscope?

Sat Dec 03, 2022 11:57 am

Just in case you use an ADS1115 (I'd recommend it), you can find a base library right here:
https://github.com/Clave-EIDEAnalog/EIDEAnalog
which is fully documented here:
https://github.com/Clave-EIDEAnalog/DOCS

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