File:Cjam-raspberry-pi-2-model-b-gpio-pins.png - Wikimedia Commons
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Sintron] 40 Pin GPIO Extension Board with 40 Pin Rainbow Color Ribbon – Sintron Technology
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Raspberry Pi [R2] + Extension Board V2.1 Pinout – howto8165
CSC 299 Sophomore Lab in Applied Computing: Hardware Projects for the Raspberry Pi
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Amazon.com: GeeekPi Micro Connectors Raspberry Pi 40-pin GPIO 1 to 2 Expansion Board 2 x 20-pin Strip Dual Male Header Double Row Straight GPIO Connector Pin Header Compatible with Raspberry Pi(2Pack) : Electronics
Raspberry Pi Documentation - Raspberry Pi hardware
Raspberry Pi Documentation - Raspberry Pi hardware
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GPIO Pin Reference Double Side Board for Raspberry Pi 2 Model B / B+ Black US | eBay
The Pi4J Project – Pin Numbering - Raspberry Pi Model B (Revision 2.0)
Raspberry Pi v2 Mod B Pinout @Raspberry_Pi #raspberrypi « Adafruit Industries – Makers, hackers, artists, designers and engineers!
The Pi4J Project – Pin Numbering - Raspberry Pi 2 Model B
