Raspberry Pinout

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W1-GPIO - One-Wire Interface

To enable the one-wire interface you need to add the following line to /boot/config.txt, before rebooting your Pi:


Alternatively you can enable the one-wire interface on demand using:

sudo modprobe w1-gpio

once either of the steps above has been performed, you can list the devices your Raspberry Pi can probe via (by default) GPIO4, like so:

ls /sys/bus/w1/devices/