Solid State Oscilloscope

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Uploaded by on Jan 15, 2008

This is a Solid State Oscilloscope that i build out of normal plan and well working pretty Good too!

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Science & Technology

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Uploader Comments (bakupcpu)

  • Sorry, I guess someone else already said something similar.

    Another thought might be adding wider display?

  • @zenosonik yes actualy is was art of a plan for later but id would need more design first! but yeah it's something possible. maybe later :P

  • I want to do something similar, but with a DSP and an LCD.

  • With an LCD you can get an higher resolution but in that case you will need to use PIC do a search on google many schematics are available.

  • LM 3914 has 2 modes, "Dot mode" & "Bar mode", Bar mode if pin 9 connect to pin 3 V+ & Dot mode if pin 9 left open, or in the other words, Bar mode results when pin 9 is within 20 mV of V+. Dot mode results when pin 9 is pulled at least 200 mV below V+ or left open circuit.

    So this 100 LEDs scope is in the Bar modes, that's why is look like a spectrum analyzer, but it is a oscilloscope, I have the circuite schematic too.

  • Correction the LM3914 is currently in dot mode its just that high frequency is making it look like a big bar. I should update this video to show some wave form.

Top Comments

  • i give you 2 bucks for that if you sell it to me

  • if only one LED turn on per column, then it would like like an Oscilloscope, for now, it is like a spectrum analyzer or simply and bar graph display like Equalizer display in a stereo.

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All Comments (11)

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  • Hi, By using a single led per line, it would produce a more 'oscilloscope like' waveform... Just a thought.

  • The one I built in 1979 didnt have triggering either. But It looked cool

  • Not necessarily. The difference between an o-scope and a spectrum analyzer is the x-axis. If the x-axis is time, it's a scope. If it's frequency, it's a spectrum analyzer. Either one could use a bargraph or a line type display.

  • it is probably oscilloscope, music has los of bass, so left side would be full of diodes, i belive it is oscilloscope, but microcontroller should come off led belowe the line

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