Request: Oscilloscope

[nobrl]

If I am not mistaken there is no oscilloscope symbol in the current package. I did find a scope symbol on stackexchange .
Is it possible to add it to the next version of the package?

Here is the code written by Sebastian Golat :

\makeatletter
\def\TikzBipolePath#1#2{\pgf@circ@bipole@path{#1}{#2}}

\newlength{\ResUp} \newlength{\ResDown}
\newlength{\ResLeft} \newlength{\ResRight}
\ctikzset{bipoles/SCOPE/height/.initial=.60}
\ctikzset{bipoles/SCOPE/width/.initial=.60}
\pgfcircdeclarebipole{}
{\ctikzvalof{bipoles/SCOPE/height}}
{SCOPE}
{\ctikzvalof{bipoles/SCOPE/height}}
{\ctikzvalof{bipoles/SCOPE/width}}
{
    \pgfsetlinewidth{\pgfkeysvalueof{/tikz/circuitikz/bipoles/thickness}\pgfstartlinewidth}
    \pgfextracty{\ResUp}{\northeast}    %ResUp make usable
    \pgfextractx{\ResRight}{\northeast} %ResRight make usable
    \pgfextractx{\ResLeft}{\southwest}  %ResLeft make usable
    \pgfextracty{\ResDown}{\southwest}  %ResDown make usable
    \def\pgfcircmathresult{\expandafter\pgf@circ@stripdecimals\pgf@circ@direction\pgf@nil}
        \ifnum \pgfcircmathresult > 45 \ifnum \pgfcircmathresult < 135
            \pgftransformrotate{270}
        \fi\fi
        \ifnum \pgfcircmathresult > 135 \ifnum \pgfcircmathresult < 225
            \pgftransformrotate{180}
        \fi\fi
        \ifnum \pgfcircmathresult > 225 \ifnum \pgfcircmathresult < 315
            \pgftransformrotate{90}
        \fi\fi
    \pgfpathmoveto{\pgfpoint{0.75\ResLeft}{0.25\ResDown}}
    \pgfpathlineto{\pgfpoint{0.05\ResLeft}{0.25\ResUp}}
    \pgfpathlineto{\pgfpoint{0.05\ResLeft}{0.25\ResDown}}
    \pgfpathlineto{\pgfpoint{0.65\ResRight}{0.25\ResUp}}
    \pgfpathlineto{\pgfpoint{0.65\ResRight}{0.25\ResDown}}

    \pgfpathellipse{\pgfpointorigin}{\pgfpoint{0}{\ResUp}}{\pgfpoint{\ResLeft}{0}}
    \pgfusepath{draw}
}
\def\SCOPEpath#1{\TikzBipolePath{SCOPE}{#1}}
\tikzset{SCOPE/.style = {\circuitikzbasekey, /tikz/to path=\SCOPEpath, l=#1}}
\makeatother

[Rmano]

I am a bit confused about that symbol; I can't really fathom what "insert an oscilloscope in series" can ever mean. Maybe could be better to add a kind of optional "waveform" symbol to the ammeter/voltmeter?
Or having a "probe" symbol (voltage and current) a-la LTSpice?

Anyway, I will try something about it. If you like to propose a PR I'll evaluate it; notice that

• no ALLCAPS names; scope or oscope is ok;
• the component must have a description in the manual also.
• about the ground / hot symbol:
  • I don't think it's general enough (think differential probes);
  • Much better having a couple of anchors and let the user do it (like node[ground, scale=0.5]{} at (myscope.right) or similar.

Thanks!

[nobrl]

I can't fathom either what "insert an oscilloscope in series" can ever mean. But I found myself in a situation where I needed an oscilloscope symbol. The "waveform" symbol to the ammeter/voltmeter seems a good solution to me (except maybe for differential probes).

[Rmano]

Ok, modifying the ammeter/voltmeter is quite easy. I'll look into it (if you don't beat me) after I am finished with the work on #175.
The only fine thing is to "unrotate" the waveform symbol; the solution here works only for multiple of 90 degrees, but we can use the solution from https://tex.stackexchange.com/questions/473544/unrotate-part-of-a-pgfdeclareshape

[Rmano]

@nobrl What do you think of this:

The graph (apart for the manual description boxes) is obtained with

\begin{circuitikz}
        \foreach \a in {0,45,...,350} {
            \draw (0,0) to[oscope] (\a:3);
        }
        \draw (4,1) to[oscope, fill=green!20!gray, name=O1] ++(3,0);
        \path (O1.right) node[ground, scale=0.5, below right=4pt]{};
        \draw (5,-1) node[oscopeshape, fill=yellow!20!orange](O2){};
        \draw (O2.in 2) to[short, *-] ++(0,-0.5) node[ground]{};
        \draw (O2.in 1) to[short, *-] ++(0,-0.5) -- ++(-1,0) node[currarrow, xscale=-1]{};
\end{circuitikz}

[nobrl]

That's much more than what I was proposing. Thanks a lot.