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\documentclass[12pt,a4paper]{article}
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\parskip 1ex
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\parindent 0em
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\thispagestyle{empty}
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\pagestyle{plain}
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\pagenumbering{arabic}
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\setlength{\topmargin}{0pt}
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\setlength{\headsep}{0pt}
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\setlength{\textheight}{240mm}
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\setlength{\footskip}{5ex}
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\setlength{\oddsidemargin}{0pt}
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\setlength{\evensidemargin}{0pt}
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\setlength{\textwidth}{160mm}
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\usepackage[dvips]{graphics,color}
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\usepackage{helvet}
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\renewcommand{\familydefault}{\sfdefault}
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\begin{document}
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\begin{sffamily}
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\definecolor{rtb-black}{rgb}  {0.0, 0.0, 0.0}
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\definecolor{rtb-navy}{rgb}   {0.0, 0.0, 0.5}
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\definecolor{rtb-green}{rgb}  {0.0, 0.5, 0.0}
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\definecolor{rtb-teal}{rgb}   {0.0, 0.5, 0.5}
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\begin{center}
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\bfseries{WiringPi: GPIO Pin Numbering Tables}\\
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\tt{http://wiringpi.com/}
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\end{center}
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\begin{center}
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\begin{tabular}{|c|c|c||p{8mm}|p{8mm}||c|c|c|c|}
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\hline
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\multicolumn{8}{|c|}{\bfseries{P1: The Main GPIO connector}}\\
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\hline
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\hline
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WiringPi Pin	& BCM GPIO	& Name	& \multicolumn{2}{|c||}{Header}	& Name	& BCM GPIO	& WiringPi Pin\\
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\hline
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\hline
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	& 			& \textcolor{rtb-red}{3.3v}	& \raggedleft{1} &  2 & \textcolor{rtb-maroon}{5v}	& 	& \\
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\hline
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8	& Rv1:0 - Rv2:2		& \textcolor{rtb-aqua}{SDA}	& \raggedleft{3} &  4 & \textcolor{rtb-maroon}{5v}	& 	& \\
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\hline
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9	& Rv1:1 - Rv2:3		& \textcolor{rtb-aqua}{SCL}	& \raggedleft{5} &  6 & \textcolor{rtb-black}{0v}	& 	& \\
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\hline
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7	& 4			& \textcolor{rtb-green}{GPIO7}	& \raggedleft{7} &  8 & \textcolor{rtb-yellow}{TxD}	& 14    & 15\\
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\hline
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	& 			& \textcolor{rtb-black}{0v}	& \raggedleft{9} & 10 & \textcolor{rtb-yellow}{RxD}	& 15	& 16\\
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\hline
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0	& 17			& \textcolor{rtb-green}{GPIO0}	& \raggedleft{11} & 12 & \textcolor{rtb-green}{GPIO1}	& 18	& 1\\
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\hline
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2	& Rv1:21 - Rv2:27	& \textcolor{rtb-green}{GPIO2}	& \raggedleft{13} & 14 & \textcolor{rtb-black}{0v}	& 	& \\
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\hline
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3	& 22			& \textcolor{rtb-green}{GPIO3}	& \raggedleft{15} & 16 & \textcolor{rtb-green}{GPIO4}	& 23	& 4\\
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\hline
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	& 			& \textcolor{rtb-red}{3.3v}	& \raggedleft{17} & 18 & \textcolor{rtb-green}{GPIO5}	& 24	& 5\\
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\hline
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12	& 10			& \textcolor{rtb-teal}{MOSI}	& \raggedleft{19} & 20 & \textcolor{rtb-black}{0v}	& 	& \\
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\hline
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13	& 9			& \textcolor{rtb-teal}{MISO}	& \raggedleft{21} & 22 & \textcolor{rtb-green}{GPIO6}	& 25	& 6\\
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\hline
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14	& 11			& \textcolor{rtb-teal}{SCLK}	& \raggedleft{23} & 24 & \textcolor{rtb-teal}{CE0}	& 8	& 10\\
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\hline
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	& 			& \textcolor{rtb-black}{0v}	& \raggedleft{25} & 26 & \textcolor{rtb-teal}{CE1}	& 7	& 11\\
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\hline
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\hline
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WiringPi Pin	& BCM GPIO	& Name	& \multicolumn{2}{|c||}{Header}	& Name	& BCM GPIO	& WiringPi Pin\\
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\hline
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\end{tabular}
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\end{center}
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Note the differences between Revision 1 and Revision 2 Raspberry
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Pi's. The Revision 2 is readily identifiable by the presence of the 2
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mounting holes.
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The revision 2 Raspberry Pi has an additional GPIO connector, P5, which is next to the main P1 GPIO
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connector:
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\begin{center}
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\begin{tabular}{|c|c|c||p{8mm}|p{8mm}||c|c|c|c|}
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\hline
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\multicolumn{8}{|c|}{\bfseries{P5: Secondary GPIO connector (Rev. 2 Pi only)}}\\
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\hline
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\hline
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WiringPi Pin	& BCM GPIO	& Name	& \multicolumn{2}{|c||}{Header}	& Name	& BCM GPIO	& WiringPi Pin\\
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\hline
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\hline
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	& 		& \textcolor{rtb-maroon}{5v}	& \raggedleft{1} &  2 & \textcolor{rtb-red}{3.3v}	& 	&	\\
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\hline
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17	& 28		& \textcolor{rtb-green}{GPIO8}	& \raggedleft{3} &  4 & \textcolor{rtb-green}{GPIO9}	& 29	& 18	\\
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\hline
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19	& 30		& \textcolor{rtb-green}{GPIO10}	& \raggedleft{5} &  6 & \textcolor{rtb-green}{GPIO11}	& 31	& 20	\\
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\hline
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	& 		& \textcolor{rtb-black}{0v}	& \raggedleft{7} &  8 & \textcolor{rtb-black}{0v}	& 	&	\\
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\hline
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\hline
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WiringPi Pin	& BCM GPIO	& Name	& \multicolumn{2}{|c||}{Header}	& Name	& BCM GPIO	& WiringPi Pin\\
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\hline
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\end{tabular}
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\end{center}
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\end{sffamily}
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\end{document}