My latest emonpi device not show wlan0 interface what is happening?

[glyn.hudson]

Hi, sorry to hear your having trouble.

When did you order from us? Do you know your order numbre? Do you know if you have the latest RaspberryPi3 with on-board Wifi? If you do one side-plate on the emonPi enclosure will be black acrylic plastic.

If you ordered some time ago and have an older RaspberryPi 2 you will need an external Wifi USB adapter.

If you have SSH access you can find out what RasPi you have by running:

$ grep 'Revision' /proc/cpuinfo | sed 's/.*: //'

If this returns a02082 then you have the latest RasPi3 with on board wifi. If it returns a01041 then you the older RaPi2 without on-board wifi. See here for more info on hardware identification:

Pi Hardware detection

Have you ever been working on a Pi that is maybe remote, and wondered what board it is running on ? Well you can actually work it out; but just in case its of any use to anyone, I bashed out this bash script (did you see what I did there…) to do exactly that; #! /bin/bash # # Return the version of the Raspberry Pi we are running on # Written by Andy Taylor # # Pull the Board revision from /proc/cpuinfo boardRev=`grep 'Revision' /proc/cpuinfo | sed 's/.*: //'` # Make the board revision human …