\begin{tikzpicture}

%% %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%%
%% My Customized Styles
%%

%% [x=20pt,y=20pt]
\tikzset{% Environment Config
    font=\small
}

%% %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%% This code is from Claudio Fiandrino and ads new label styles to
%% allow aditional labels like two line descriptions. Comes from:
%% --> https://tex.stackexchange.com/a/65792/154390
%%
\makeatletter
\ctikzset{lx/.code args={#1 and #2}{ 
  \pgfkeys{/tikz/circuitikz/bipole/label/name=\parbox{1cm}{\centering #1 \\ #2}}
    \ctikzsetvalof{bipole/label/unit}{}
    \ifpgf@circ@siunitx 
      \pgf@circ@handleSI{#2}
      \ifpgf@circ@siunitx@res 
        \edef\pgf@temp{\pgf@circ@handleSI@val}
        \pgfkeyslet{/tikz/circuitikz/bipole/label/name}{\pgf@temp}
        \edef\pgf@temp{\pgf@circ@handleSI@unit}
        \pgfkeyslet{/tikz/circuitikz/bipole/label/unit}{\pgf@temp}
      \else
      \fi
    \else
    \fi
}}
\ctikzset{lx^/.style args={#1 and #2}{
  lx=#2 and #1,
  \circuitikzbasekey/bipole/label/position=90
}}
\ctikzset{lx_/.style args={#1 and #2}{
  lx=#1 and #2,
  \circuitikzbasekey/bipole/label/position=-90
}}
\makeatother

\ctikzset{bipoles/length=10mm} % Controls bipoles scale

%% %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%%
%% My Customized Components
%%

% You can create an smart objet like Henri Menke in this post:
% --> http://www.texample.net/tikz/examples/4-bit-counter/
% Variables: 1: Position 2: ID.
\def\TIMER555(#1)#2{%
    \begin{scope}[shift={(#1)}]
        \draw[fill=blue!10] (-1.5,-2) rectangle (1.5,2); % The body of IC
        % Label and component identifier.
        \draw[blue] (2,2.5) node []{\large \bf U#2}; % IC LABEL
        \draw[blue] (0,0.5) node [align=center]{\large NE555\\TIMER}; % IC LABEL
        % Draw the pins
        % Some that you have to learn about label nodes, draw lines, and name coordinates in Tikz
        \draw (0.9,-2) node [above]{GND} -- +(0,-0.5) node [anchor=-45]{1} coordinate (#2 GND); % Pin 1 GND
        \draw (-1.5,-1.5) node [right]{TRG} -- +(-0.5,0) node [anchor=-135]{2} coordinate (#2 TRG); % Pin 2 TRG
        \draw (1.5,0) node [left]{OUT} -- +(0.5,0) node [anchor=-45]{3} coordinate (#2 OUT); % Pin 3 OUT  
        \draw (0.9,2) node [below]{RESET} -- +(0,0.5) node [anchor=45]{4} coordinate (#2 RESET); % Pin 4 RESET
        \draw (0,-2) node [above]{CTRL} -- +(0,-0.5) node [anchor=-45]{5} coordinate (#2 CTRL); % Pin 5 CTRL
        \draw (-1.5,-.5) node [right]{THR} -- +(-0.5,0) node [anchor=-135]{6} coordinate (#2 THR); % Pin 6 THR
        \draw (-1.5,1.5) node [right]{DIS} -- +(-0.5,0) node [anchor=-135]{7} coordinate (#2 DIS); % Pin 7 DIS
        \draw (0,2) node [below]{$\mathsf{V_{CC}}$} -- +(0,0.5) node [anchor=45]{8} coordinate (#2 VCC); % Pin 8 VCC
    \end{scope}
}

% This is by J. Leon V. and adaption by me
% Variables: 1: Position 2: ID.
\def\SPEAKER(#1)#2{%
    \begin{scope}[shift={(#1)}]
        \draw[fill=green!40!black!50] (-.2,.3) rectangle (.2,-.3); % The body of IC
        \draw[fill=green!40!black!30] (.2,.3) -- ++(.2,.3) -- ++(0,-1.2) -- (.2,-0.3) -- (.2,.3); % The body of IC
        % Label and component identifier.
        \draw[blue] (-1.25,0.25) node []{\large \bf E#2}; % PART LABEL
        \draw[blue] (-1.25,-.25) node [align=center]{\large Speaker}; % PART LABEL
        % Component value.
        \draw[blue] (-1.25,-.75) node [align=center]{8\si{\ohm}}; % PART VALUE
        % Draw the pins
        % Some that you have to learn about label nodes, draw lines, and name coordinates in Tikz
        \draw (0,.3)  -- +(0,0.5) node [anchor=45]{1} coordinate (#2 S1); % Pin 1 
        \draw (0,-0.3)  -- +(0,-0.5) node [anchor=-45]{2} coordinate (#2 S2); % Pin 2 
    \end{scope}
}

%% %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%%
%% Schematic: drawing the circuit: Example "Dee-Dah" Siren
%%

% Place the IC's in position
\TIMER555(0,0){1};
\TIMER555(6,0){2};
\SPEAKER(9.5,-3){1};

% Start conecting 
\draw[color=blue!50] (-4,3.5) % Start point
    node [anchor=east]{$\mathsf{V_{CC}}$}
    to [short,o-] ++(1,0) coordinate (NOD1) % Use auxiliar coordinate (NOD1)
    to [R,lx^=68k\si{\ohm} and R1,color=black,*-*] (1 DIS -| NOD1) % to the point in the intersection between NOD1 and 1 DIS
    to [R,lx^=68k\si{\ohm} and R2,color=black,*-*] (1 THR -| NOD1)% idem
    to [short,*-*] (1 TRG -| NOD1)
    to [eC,lx^=10\si{\mu}F and C1,color=black,*-*] (-3,-5)
    to [short,*-o] ++(-1,0) coordinate (GND)
    node [anchor=east]{GND};

\draw[color=blue] (1 DIS)
    to [short,-] (1 DIS -| NOD1)
    to [short,-] ++(-.7,0) coordinate (NOD2)
    to [D,lx_=D1 and IN4148,color=black] (1 THR -| NOD2) % Here is used Fiandrino macro!
    to [short,-] (1 THR);

\draw[color=blue!50] (NOD1) 
    to [short,-*] ++(6,0) coordinate (NOD3) % Use auxiliar coordinate (NOD1)
    to [R,lx^=68k\si{\ohm} and R3,color=black,*-*] (1 DIS -| NOD3) % to the point in the intersection between NOD3 and 1 DIS
    to [R,lx^=68k\si{\ohm} and R4,color=black,*-*] (1 THR -| NOD3)% idem
    to [short,*-*] (1 TRG -| NOD3)
    to [short,-] ++(0,-2)
    to [eC,lx^=100nF and C3,color=black,-*] (NOD3 |- GND) coordinate (NOD4)
    to [short,-] (GND);

\draw[color=blue] (1 OUT)
    to[R,lx=R5 and 10k\si{\ohm},label/align=rotate,color=black] ++(0,-3) coordinate (NOD5)
    to [short] (2 CTRL |- NOD5)
    to [short] (2 CTRL);    

\draw[color=blue] (2 OUT)
    to[pC,lx^=100\si{\mu}F and C4,invert,color=black] (2 OUT -| 1 S1)
    to [pR,l_=Rx,color=black] (1 S1); 

%Conect U1
\draw[color=blue] (1 VCC) to [short,-*] (1 VCC |- NOD1);
\draw[color=blue] (1 RESET) to [short,-*] (1 RESET |- NOD1);
\draw[color=blue] (1 TRG) to [short,-*] (1 TRG -| NOD1);
\draw[color=blue] (1 CTRL) to [eC,lx_=C2 and 0.01nF,-*,color=black] (1 CTRL |- GND);
\draw[color=blue] (1 GND) to [short,-*] (1 GND |- GND);

%Conect U2
\draw[color=blue] (2 VCC) to [short,-*] (2 VCC |- NOD3);
\draw[color=blue] (2 RESET) to [short,-] (2 RESET |- NOD3) to [short] (NOD3);
\draw[color=blue] (2 TRG) to [short,-*] (2 TRG -| NOD3);
\draw[color=blue] (2 GND) to [short,-*] (2 GND |- GND);
\draw[color=blue] (2 DIS) to [short] (2 DIS -| NOD3);
\draw[color=blue] (2 THR) to [short] (2 THR -| NOD3);

% Conect E1
\draw[color=blue] (1 S2) |- (NOD3 |- GND);

% Decorate ground and VCC
\draw[color=blue] (GND -| NOD3) -- ++(0,-0.2)node[rground]{};
\draw[color=blue] (NOD3) -- ++(0,0.2) node[vcc]{$\mathsf{V_{CC}}$ (+5 to 15V)};

%%
%%
%% %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

\end{tikzpicture}

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