26-pin GPIO
GPIO Pinout – Rasp Pi 1 Rev1 and Rev2
GPIO image courtesy of eLinux.org, released under the Creative Commons Attribution-ShareAlike 3.0 Unported License.
For more information, see the eLinux.org Raspberry Pi wiki.
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GPIO Pinout – Rasp Pi 1 Model B+/Rasp Pi 2 Model B
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