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  • Do you mean GPIO 17 and 18 or the physical pins 17 and 18. They are not the same. Commented Oct 4, 2013 at 16:03
  • Yes, you did. Looks like you are lucky, in that you didn't break the entire Pi. Just use the other pins. @graig physical pin 17 is the 3.3V line, so that one should always be (semi-)high. Commented Oct 4, 2013 at 18:24
  • @Craig GPIO 17 and GPIO 18. In other word physical pins P1-11 and P1-12. Commented Oct 6, 2013 at 5:29