RFID system for The Bodgery <http://thebodgery.org> PINS ==== Pins Used on the Rpi Model B+. Numbered by physical header, not GPIO number. Pin Function --- -------- 1 Open/closed door pushbutton switch power (3.3V) 7 LED open signal (GPIO4) 9 LED open signal ground (GND) 11 Open/closed door pushbutton switch (GPIO17) 13 Relay enable pin (GPIO27) 15 Lock Relay (GPIO22) 16 Open/closed shop toggle switch (GPIO23) 17 Open/closed shop toggle switch power (3V3) 22 Unlock Switch (GPIO25) 25 Relay ground (GND)