====== Enable Remote Access to GPIO Pins ======
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If you are using your Raspberry Pi via SSH or a Remote Desktop session, you need to enable remote access of the GPIO Pins, to do this from the command line, do the following:
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    sudo raspi-config

    ┌──────────────────┤ Raspberry Pi Software Configuration Tool (raspi-config) ├───────────────────┐
    │                                                                                                │
    │    1 Expand Filesystem                       Ensures that all of the SD card storage is        │
    │    2 Change User Password                    Change password for the default user (pi)         │
    │    3 Boot Options                            Choose whether to boot into a desktop envi        │
    │    4 Wait for Network at Boot                Choose whether to wait for network connect        │
    │    5 Internationalisation Options            Set up language and regional settings to m        │
    │    6 Enable Camera                           Enable this Pi to work with the Raspberry         │
    │    7 Add to Rastrack                         Add this Pi to the online Raspberry Pi Map        │
    │    8 Overclock                               Configure overclocking for your Pi                │
    │    9 Advanced Options                        Configure advanced settings                       │
    │    0 About raspi-config                      Information about this configuration tool         │
    │                                                                                                │
    │                                                                                                │
    │                           <Select>                           <Finish>                          │
    │                                                                                                │
    └────────────────────────────────────────────────────────────────────────────────────────────────┘

    Advanced Options:

    ┌──────────────────┤ Raspberry Pi Software Configuration Tool (raspi-config) ├───────────────────┐
    │                                                                                                │
    │    A1 Overscan                               You may need to configure overscan if blac  ↑     │
    │    A2 Hostname                               Set the visible name for this Pi on a netw  ▮     │
    │    A3 Memory Split                           Change the amount of memory made available  ▒     │
    │    A4 SSH                                    Enable/Disable remote command line access   ▒     │
    │    A5 SPI                                    Enable/Disable automatic loading of SPI ke  ▒     │
    │    A6 I2C                                    Enable/Disable automatic loading of I2C ke  ▒     │
    │    A7 Serial                                 Enable/Disable shell and kernel messages o  ▒     │
    │    A8 Audio                                  Force audio out through HDMI or 3.5mm jack  ▒     │
    │    A9 1-Wire                                 Enable/Disable one-wire interface           ▒     │
    │    AA GPIO Server                            Enable/Disable remote access to GPIO pins   ↓     │
    │                                                                                                │
    │                                                                                                │
    │                           <Select>                           <Back>                            │
    │                                                                                                │
    └────────────────────────────────────────────────────────────────────────────────────────────────┘

    Select GPIO Server

                       ┌──────────────────────────────────────────────────────────┐
                       │                                                          │
                       │ Would you like the GPIO server to be accessible over the │
                       │ network?                                                 │
                       │                                                          │
                       │                                                          │
                       │                                                          │
                       │                                                          │
                       │                                                          │
                       │                                                          │
                       │                                                          │
                       │                                                          │
                       │                                                          │
                       │                                                          │
                       │                                                          │
                       │                                                          │
                       │                                                          │
                       │               <Yes>                  <No>                │
                       │                                                          │
                       └──────────────────────────────────────────────────────────┘

    You will get a confirmation that the GPIO Server is available.

    ┌──────────────────┤ Raspberry Pi Software Configuration Tool (raspi-config) ├───────────────────┐
    │                                                                                                │
    │    1 Expand Filesystem                       Ensures that all of the SD card storage is        │
    │    2 Change User Password                    Change password for the default user (pi)         │
    │    3 Boot Options                            Choose whether to boot into a desktop envi        │
    │    4 Wait for Network at Boot                Choose whether to wait for network connect        │
    │    5 Internationalisation Options            Set up language and regional settings to m        │
    │    6 Enable Camera                           Enable this Pi to work with the Raspberry         │
    │    7 Add to Rastrack                         Add this Pi to the online Raspberry Pi Map        │
    │    8 Overclock                               Configure overclocking for your Pi                │
    │    9 Advanced Options                        Configure advanced settings                       │
    │    0 About raspi-config                      Information about this configuration tool         │
    │                                                                                                │
    │                                                                                                │
    │                           <Select>                           <Finish>                          │
    │                                                                                                │
    └────────────────────────────────────────────────────────────────────────────────────────────────┘

    Now Select Finish - You will be back at the command prompt (you may need to reboot)
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