\begin{tikzpicture}[scale=2.54]%
% dpic version 2024.01.01 option -g for TikZ and PGF 1.01
\ifx\dpiclw\undefined\newdimen\dpiclw\fi
\global\def\dpicdraw{\draw[line width=\dpiclw]}
\global\def\dpicstop{;}
\dpiclw=0.8bp
\dpiclw=0.8bp
{\small\sf
\dpicdraw[fill=white!90!black](0.541667,-1.027361) rectangle (1.741667,0.472639)\dpicstop
{\scriptsize\sf
\draw (1.441667,-1.027361) node(P1)[below left=-2bp]{1};
\draw (1.441667,-1.027361) node[above=-2bp]{GND};
\draw (1.141667,-1.027361) node(P5)[below left=-2bp]{5};
\draw (1.141667,-1.027361) node[above=-2bp]{CTRL};
\draw (0.541667,-0.839861) node(P2)[above left=-2bp]{2};
\draw (0.541667,-0.839861) node[right=-2bp]{TRG};
\draw (0.541667,-0.464861) node(P6)[above left=-2bp]{6};
\draw (0.541667,-0.464861) node[right=-2bp]{THR};
\draw (0.541667,0.285139) node(P7)[above left=-2bp]{7};
\draw (0.541667,0.285139) node[right=-2bp]{DIS};
\draw (1.741667,-0.277361) node(P3)[above right=-2bp]{3};
\draw (1.741667,-0.277361) node[left=-2bp]{OUT};
\draw (1.441667,0.472639) node(P4)[above left=-2bp]{4};
\draw (1.441667,0.472639) node[below=-2bp]{\phantom{M}RESET};
\draw (1.141667,0.472639) node(P8)[above left=-2bp]{8};
\draw (1.141667,0.472639) node[below=-2bp]{Vcc};
\draw (1.141667,-0.277361) node{\shortstack{NE-555\\%
TIMER}};
}%
\dpicdraw (0.541667,0.285139)
 --(0.041667,0.285139)\dpicstop
\dpicdraw[fill=black](0.041667,0.285139) circle (0.007874in)\dpicstop
\dpicdraw (0.041667,0.285139)
 --(0.041667,0.535139)
 --(-0,0.555972)
 --(0.083333,0.597639)
 --(-0,0.639306)
 --(0.083333,0.680972)
 --(-0,0.722639)
 --(0.083333,0.764306)
 --(0.041667,0.785139)
 --(0.041667,1.035139)\dpicstop
\draw (0.083333,0.660139) node[right=-2bp]{$ \SI{68}{\kilo\ohm}$};
\dpicdraw[fill=black](0.041667,1.035139) circle (0.007874in)\dpicstop
\dpicdraw (0.041667,0.285139)
 --(0.041667,0.035139)
 --(0.083333,0.014306)
 --(-0,-0.027361)
 --(0.083333,-0.069028)
 --(-0,-0.110694)
 --(0.083333,-0.152361)
 --(-0,-0.194028)
 --(0.041667,-0.214861)
 --(0.041667,-0.464861)\dpicstop
\draw (0.083333,-0.089861) node[right=-2bp]{$ \SI{68}{\kilo\ohm}$};
\dpicdraw[fill=black](0.041667,-0.464861) circle (0.007874in)\dpicstop
\dpicdraw (0.041667,-0.464861)
 --(0.541667,-0.464861)\dpicstop
\dpicdraw (0.041667,-0.464861)
 --(0.041667,-0.839861)\dpicstop
\dpicdraw[fill=black](0.041667,-0.839861) circle (0.007874in)\dpicstop
\dpicdraw (0.041667,-0.839861)
 --(0.541667,-0.839861)\dpicstop
\dpicdraw (1.141667,0.472639)
 --(1.141667,1.035139)\dpicstop
\dpicdraw[fill=black](1.141667,1.035139) circle (0.007874in)\dpicstop
\draw (0.541667,0.472639) node[above right=-2bp]{U1};
\dpicdraw[fill=white!90!black](2.991667,-1.027361) rectangle (4.191667,0.472639)\dpicstop
{\scriptsize\sf
\draw (3.891667,-1.027361) node(P1)[below left=-2bp]{1};
\draw (3.891667,-1.027361) node[above=-2bp]{GND};
\draw (3.591667,-1.027361) node(P5)[below left=-2bp]{5};
\draw (3.591667,-1.027361) node[above=-2bp]{CTRL};
\draw (2.991667,-0.839861) node(P2)[above left=-2bp]{2};
\draw (2.991667,-0.839861) node[right=-2bp]{TRG};
\draw (2.991667,-0.464861) node(P6)[above left=-2bp]{6};
\draw (2.991667,-0.464861) node[right=-2bp]{THR};
\draw (2.991667,0.285139) node(P7)[above left=-2bp]{7};
\draw (2.991667,0.285139) node[right=-2bp]{DIS};
\draw (4.191667,-0.277361) node(P3)[above right=-2bp]{3};
\draw (4.191667,-0.277361) node[left=-2bp]{OUT};
\draw (3.891667,0.472639) node(P4)[above left=-2bp]{4};
\draw (3.891667,0.472639) node[below=-2bp]{\phantom{M}RESET};
\draw (3.591667,0.472639) node(P8)[above left=-2bp]{8};
\draw (3.591667,0.472639) node[below=-2bp]{Vcc};
\draw (3.591667,-0.277361) node{\shortstack{NE-555\\%
TIMER}};
}%
\dpicdraw (2.991667,0.285139)
 --(2.491667,0.285139)\dpicstop
\dpicdraw[fill=black](2.491667,0.285139) circle (0.007874in)\dpicstop
\dpicdraw (2.491667,0.285139)
 --(2.491667,0.535139)
 --(2.45,0.555972)
 --(2.533333,0.597639)
 --(2.45,0.639306)
 --(2.533333,0.680972)
 --(2.45,0.722639)
 --(2.533333,0.764306)
 --(2.491667,0.785139)
 --(2.491667,1.035139)\dpicstop
\draw (2.533333,0.660139) node[right=-2bp]{$ \SI{68}{\kilo\ohm}$};
\dpicdraw[fill=black](2.491667,1.035139) circle (0.007874in)\dpicstop
\dpicdraw (2.491667,0.285139)
 --(2.491667,0.035139)
 --(2.533333,0.014306)
 --(2.45,-0.027361)
 --(2.533333,-0.069028)
 --(2.45,-0.110694)
 --(2.533333,-0.152361)
 --(2.45,-0.194028)
 --(2.491667,-0.214861)
 --(2.491667,-0.464861)\dpicstop
\draw (2.533333,-0.089861) node[right=-2bp]{$ \SI{68}{\kilo\ohm}$};
\dpicdraw[fill=black](2.491667,-0.464861) circle (0.007874in)\dpicstop
\dpicdraw (2.491667,-0.464861)
 --(2.991667,-0.464861)\dpicstop
\dpicdraw (2.491667,-0.464861)
 --(2.491667,-0.839861)\dpicstop
\dpicdraw[fill=black](2.491667,-0.839861) circle (0.007874in)\dpicstop
\dpicdraw (2.491667,-0.839861)
 --(2.991667,-0.839861)\dpicstop
\dpicdraw (3.591667,0.472639)
 --(3.591667,1.035139)\dpicstop
\dpicdraw[fill=black](3.591667,1.035139) circle (0.007874in)\dpicstop
\draw (2.991667,0.472639) node[above right=-2bp]{U2};
\dpicdraw (0.041667,0.285139)
 --(-0.208333,0.285139)\dpicstop
\dpicdraw (-0.208333,0.285139)
 --(-0.208333,-0.053777)\dpicstop
\fill[fill=black,line width=0bp](-0.208333,-0.053777)
 --(-0.166667,-0.053777)
 --(-0.208333,-0.120411)
 --(-0.25,-0.053777)
 --(-0.208333,-0.053777)--cycle
\dpicstop
\dpicdraw (-0.208333,-0.053777)
 --(-0.166667,-0.053777)
 --(-0.208333,-0.120411)
 --(-0.25,-0.053777)
 --(-0.208333,-0.053777)\dpicstop
\dpicdraw (-0.254052,-0.125946)
 --(-0.162615,-0.125946)\dpicstop
\dpicdraw (-0.208333,-0.125946)
 --(-0.208333,-0.464861)\dpicstop
\draw (-0.259587,-0.089861) node[left=-2bp]{$ \shortstack{D1\\1N4148}$};
\dpicdraw (-0.208333,-0.464861)
 --(0.041667,-0.464861)\dpicstop
\dpicdraw[fill=black](0.041667,-0.464861) circle (0.007874in)\dpicstop
\dpicdraw (0.041667,-0.839861)
 --(0.041667,-1.164861)\dpicstop
\dpiclw=0.4bp
\dpicdraw (0.041667,-1.196111)
 --(0.091667,-1.196111)
 --(0.091667,-1.164861)
 --(-0.008333,-1.164861)
 --(-0.008333,-1.196111)
 --(0.041667,-1.196111)\dpicstop
\fill[fill=black,line width=0bp](0.041667,-1.233611)
 --(0.091667,-1.233611)
 --(0.091667,-1.264861)
 --(-0.008333,-1.264861)
 --(-0.008333,-1.233611)
 --(0.041667,-1.233611)--cycle
\dpicstop
\dpicdraw (0.041667,-1.233611)
 --(0.091667,-1.233611)
 --(0.091667,-1.264861)
 --(-0.008333,-1.264861)
 --(-0.008333,-1.233611)
 --(0.041667,-1.233611)\dpicstop
\dpiclw=0.8bp
\dpicdraw (0.041667,-1.264861)
 --(0.041667,-1.589861)\dpicstop
\dpicdraw[line width=0.5bp](0.008333,-1.148194)
 --(0.008333,-1.114861)\dpicstop
\dpicdraw[line width=0.5bp](0.025,-1.131528)
 --(-0.008333,-1.131528)\dpicstop
\draw (0.091667,-1.214861) node[right=-2bp]{$ \SI{10}{\micro\farad}$};
\dpicdraw[fill=black](0.041667,-1.589861) circle (0.007874in)\dpicstop
\dpicdraw[fill=white](-0.208333,-1.589861) circle (0.007874in)\dpicstop
\dpicdraw[fill=white](-0.208333,-1.589861) circle (0.007874in)\dpicstop
\draw (-0.228333,-1.589861) node[left=-2bp]{GND};
\dpicdraw (1.141667,-1.027361)
 --(1.141667,-1.258611)\dpicstop
\dpiclw=0.4bp
\dpicdraw (1.141667,-1.289861)
 --(1.191667,-1.289861)
 --(1.191667,-1.258611)
 --(1.091667,-1.258611)
 --(1.091667,-1.289861)
 --(1.141667,-1.289861)\dpicstop
\fill[fill=black,line width=0bp](1.141667,-1.327361)
 --(1.191667,-1.327361)
 --(1.191667,-1.358611)
 --(1.091667,-1.358611)
 --(1.091667,-1.327361)
 --(1.141667,-1.327361)--cycle
\dpicstop
\dpicdraw (1.141667,-1.327361)
 --(1.191667,-1.327361)
 --(1.191667,-1.358611)
 --(1.091667,-1.358611)
 --(1.091667,-1.327361)
 --(1.141667,-1.327361)\dpicstop
\dpiclw=0.8bp
\dpicdraw (1.141667,-1.358611)
 --(1.141667,-1.589861)\dpicstop
\dpicdraw[line width=0.5bp](1.108333,-1.241944)
 --(1.108333,-1.208611)\dpicstop
\dpicdraw[line width=0.5bp](1.125,-1.225278)
 --(1.091667,-1.225278)\dpicstop
\draw (1.091667,-1.308611) node[left=-2bp]{$ \SI{0.01}{\nano\farad}$};
\dpicdraw[fill=black](1.141667,-1.589861) circle (0.007874in)\dpicstop
\dpicdraw (1.441667,-1.027361)
 --(1.441667,-1.589861)\dpicstop
\dpicdraw[fill=black](1.441667,-1.589861) circle (0.007874in)\dpicstop
\dpicdraw[fill=white](-0.208333,1.035139) circle (0.007874in)\dpicstop
\draw (-0.228333,1.035139) node[left=-2bp]{Vcc};
\dpicdraw[fill=black](1.441667,1.035139) circle (0.007874in)\dpicstop
\dpicdraw (1.441667,1.035139)
 --(1.441667,0.472639)\dpicstop
\dpicdraw (1.741667,-0.277361)
 --(1.991667,-0.277361)\dpicstop
\dpicdraw (1.991667,-0.277361)
 --(1.991667,-0.60375)
 --(2.033333,-0.624583)
 --(1.95,-0.66625)
 --(2.033333,-0.707917)
 --(1.95,-0.749583)
 --(2.033333,-0.79125)
 --(1.95,-0.832917)
 --(1.991667,-0.85375)
 --(1.991667,-1.180139)\dpicstop
\draw (2.033333,-0.72875) node[right=-2bp]{$ \SI{10}{\kilo\ohm}$};
\dpicdraw (1.991667,-1.180139)
 --(3.591667,-1.180139)
 --(3.591667,-1.027361)\dpicstop
\dpicdraw[fill=black](2.491667,-1.589861) circle (0.007874in)\dpicstop
\dpicdraw (2.491667,-1.589861)
 --(2.491667,-1.714861)\dpicstop
\dpicdraw (2.575,-1.714861)
 --(2.408333,-1.714861)\dpicstop
\dpicdraw (2.547222,-1.746111)
 --(2.436111,-1.746111)\dpicstop
\dpicdraw (2.527381,-1.777361)
 --(2.455952,-1.777361)\dpicstop
\dpicdraw (2.491667,-1.027361)
 --(2.491667,-1.258611)\dpicstop
\dpiclw=0.4bp
\dpicdraw (2.491667,-1.289861)
 --(2.541667,-1.289861)
 --(2.541667,-1.258611)
 --(2.441667,-1.258611)
 --(2.441667,-1.289861)
 --(2.491667,-1.289861)\dpicstop
\fill[fill=black,line width=0bp](2.491667,-1.327361)
 --(2.541667,-1.327361)
 --(2.541667,-1.358611)
 --(2.441667,-1.358611)
 --(2.441667,-1.327361)
 --(2.491667,-1.327361)--cycle
\dpicstop
\dpicdraw (2.491667,-1.327361)
 --(2.541667,-1.327361)
 --(2.541667,-1.358611)
 --(2.441667,-1.358611)
 --(2.441667,-1.327361)
 --(2.491667,-1.327361)\dpicstop
\dpiclw=0.8bp
\dpicdraw (2.491667,-1.358611)
 --(2.491667,-1.589861)\dpicstop
\dpicdraw[line width=0.5bp](2.458333,-1.241944)
 --(2.458333,-1.208611)\dpicstop
\dpicdraw[line width=0.5bp](2.475,-1.225278)
 --(2.441667,-1.225278)\dpicstop
\draw (2.541667,-1.308611) node[right=-2bp]{$ \SI{100}{\nano\farad}$};
\dpicdraw (2.491667,-1.027361)
 --(2.491667,-0.839861)\dpicstop
\dpicdraw (3.891667,-1.027361)
 --(3.891667,-1.589861)\dpicstop
\dpicdraw[fill=black](3.891667,-1.589861) circle (0.007874in)\dpicstop
\dpicdraw (3.891667,0.472639)
 --(3.891667,1.035139)
 --(-0.188333,1.035139)\dpicstop
\dpicdraw[fill=white](2.491667,1.285139) circle (0.007874in)\dpicstop
\dpicdraw (2.491667,1.265139)
 --(2.491667,1.055139)\dpicstop
\draw (2.491667,1.305139) node[above=-2bp]{$+$\SI{5}{\volt} to $+$\SI{15}{\volt}};
\dpicdraw (4.191667,-0.277361)
 --(4.416667,-0.277361)\dpicstop
\dpicdraw (4.416667,-0.339861)
 --(4.416667,-0.214861)\dpicstop
\dpicdraw (4.466667,-0.339861)
 ..controls (4.444338,-0.301186) and (4.444338,-0.253536)
 ..(4.466667,-0.214861)\dpicstop
\dpicdraw (4.44992,-0.277361)
 --(4.691667,-0.277361)\dpicstop
\draw (4.441667,-0.214861) node[above=-2bp]{$ \SI{100}{\micro\farad}$};
\dpicdraw (4.691667,-0.277361)
 --(4.691667,-0.549826)
 --(4.733333,-0.57066)
 --(4.65,-0.612326)
 --(4.733333,-0.653993)
 --(4.65,-0.69566)
 --(4.733333,-0.737326)
 --(4.65,-0.778993)
 --(4.691667,-0.799826)
 --(4.691667,-1.072292)\dpicstop
\filldraw[line width=0bp](4.791667,-0.649826)
 --(4.691667,-0.674826)
 --(4.791667,-0.699826) --cycle\dpicstop
\dpicdraw (4.9,-0.674826)
 --(4.714573,-0.674826)\dpicstop
\draw (4.9,-0.674826) node[right=-2bp]{Rx};
\fill[fill=white!90!black,line width=0bp](4.750592,-1.072292)
 --(4.986294,-0.905625)
 --(4.986294,-1.572292)
 --(4.750592,-1.405625)--cycle
\dpicstop
\dpicdraw (4.750592,-1.072292)
 --(4.986294,-0.905625)
 --(4.986294,-1.572292)
 --(4.750592,-1.405625)\dpicstop
\fill[fill=white!90!black,line width=0bp](4.750592,-1.238958)
 --(4.750592,-1.072292)
 --(4.51489,-1.072292)
 --(4.51489,-1.405625)
 --(4.750592,-1.405625)
 --(4.750592,-1.238958)--cycle
\dpicstop
\dpicdraw (4.750592,-1.238958)
 --(4.750592,-1.072292)
 --(4.51489,-1.072292)
 --(4.51489,-1.405625)
 --(4.750592,-1.405625)
 --(4.750592,-1.238958)\dpicstop
\draw (4.691667,-1.072292) node[above left=-2bp]{1};
\draw (4.691667,-1.405625) node[below left=-2bp]{2};
\draw (4.51489,-1.238958) node[left=-2bp]{\shortstack{E1\\Speaker}};
\dpicdraw (4.691667,-1.405625)
 --(4.691667,-1.589861)
 --(-0.188333,-1.589861)\dpicstop
}%
\end{tikzpicture}%

.
