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Hey guys I have already installed everything. I'm using Raspberry Pi B+. Everything looks fine but the program can't switch physically GPIO. On GPIO 16 is always "1" i checked by multimeter. PLEASE HELP :(
I figured out :)with model b+, I can only address the new GPIO pins with gpio.setmode(gpio.BCM). If I use gpio.setmode(gpio.BOARD) instead, I get The channel sent is invalid on a Raspberry Pi errors for pin numbers greater 26.