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--- add_a_network_interface_without_using_usb [2016/08/27 22:28] – walkeradmin
+++ add_a_network_interface_without_using_usb [2017/02/01 16:19] – [Updates] walkeradmin
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 What they have done is used a network module that runs on the SPI bus. Its a cheap unit that you can get from ebay for around £3, and while they are cheap, they are reliable, albeit a little slow, but not so slow that they are unusable. I will take reliability over speed any day.
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+\\
+Here is the unit I purchased from eBay for £2.07p\\
+{{:s-l1600.jpg?300|}}
+\\
+The seller on eBay is <color Orange>chips-fans</color> and while it has the same part number as the one used on raspi.tv, the pins are different, which is a bit annoying, but it wasn't to hard to work out.
+\\
+\\
+===== Connecting the NIC ======
+\\
+Here are the connections I used for this board:
+\\
+    GPIO     RPi Pin    Nic PNo    Nic Func
+    n/c                 1          CLK
+    n/c                 2          WOL
+    GPIO10   19         3          SI
+    GPIO08   24         4          CS
+v3      17         5          Vcc
+    GPIO25   22         6          NT
+    GPIO09   21         7          SO
+    GPIO11   23         8          SCK
+    n/c                 9          RST
+    GND      20         10         GND
+\\
+===== Configuration =====
+\\
+Enable the SPI Pins:
+\\
+    From the command line
+    sudo raspi-config
+    Advanced Options - SPI - Yes to Enable
+\\
+Add the following to your <color Orange>/boot/config.txt</color>
+\\
+    dtoverlay=enc28j60
+\\
+Now <color red>reboot</color> the Pi
+\\
+\\
+===== Updates =====
+\\
+<color Red>WARNING!!! - </color>I initially got kernel panics when I tested this unit, so using a standard USB nic, you need to do the following:
+\\
+    sudo apt-get upgrade
+    sudo apt-get update
+    sudo rpi-update (this forces a kernel update)
+\\
+===== Testing =====
+\\
+You can use a command line version of speedtest.net if you install it…
+\\
+    sudo apt-get install python-pip
+    sudo easy_install speedtest-cli
+    Run it with speedtest-cli
+\\
+I am currently getting:\\
+\\
+<color orange>4Mb/s Download</color>\\
+<color orange>3Mb/s Upload</color>\\
+\\
+The best part is that it is super reliable (and cheap) and we can still use the USB port for something else :)
+\\
+\\
+{{:gpio_spi_nic.jpg?400|}}{{:gpio_spi_nic_2.jpg?400|}}
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