Solid State Oscilloscope
Uploader Comments (bakupcpu)
Top Comments
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i give you 2 bucks for that if you sell it to me
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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.
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.
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The one I built in 1979 didnt have triggering either. But It looked cool
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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.
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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
Sorry, I guess someone else already said something similar.
Another thought might be adding wider display?
zenosonik 1 year ago
@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
bakupcpu 1 year ago
I want to do something similar, but with a DSP and an LCD.
d3u1d4e 2 years ago
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.
bakupcpu 2 years ago
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.
mreza84 2 years ago
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.
bakupcpu 2 years ago