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Everything Related To The Beaglebone SBC
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BeagleBone/Relay-Cape-Setup.txt

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  1. 

  2. 

  3. Relay Cape notes

  4. 

  5. Initialize (relays to out) after an install

  6. 

  7. echo 20  > /sys/class/gpio/export

  8. echo out > /sys/class/gpio/gpio20/direction

  9. echo out > /sys/class/gpio/gpio7/direction

  10. echo out > /sys/class/gpio/gpio112/direction

  11. echo out > /sys/class/gpio/gpio115/direction

  12. 

  13. 

  14. BBGW Note

  15. 

  16. Well I set the default directory to 

  17. /sys/class/gpio

  18. and issued the command

  19. echo 112 > export

  20. and like magic the gpio112 appeared. It works now. Don't know why gpio112 was not automatically created however.

  21.