ok here goes. I’m sure this guide isn’t absolutely perfect and you’ll probably end up installing things you don’t need but hopefully in the end it’ll get it up and running. I’m afraid I do somewhat fluff my way through this stuff, but i’ve always got it happening sooner or later.
I’m assuming you know your way round the terminal a bit?
1. You’ll need this file https://drive.google.com/file/d/0B96pmq-lU9NQUTBwM19XUWw3OFk/view?usp=sharing
2. save that on your pi somewhere. I just popped mine in a ‘nubits’ folder on my desktop.
3. This bit is taken from a guide to compile bitcoin on a pi:
– Update all existing software on the Pi (one line at a time)
sudo apt-get update
sudo apt-get upgrade
– Install the prerequisites required for compilation (one line at a time)
sudo apt-get install checkinstall subversion git git-core build-essential
sudo apt-get install libssl-dev libdb+±dev libminiupnpc-dev
sudo apt-get install libboost-dev libboost-system-dev libboost-filesystem-dev libboost-program-options-dev libboost-thread-dev
4. This bit is taken from this thread: Binaries for RaspberryPi or other ARM devices?
sudo ln -s /usr/lib/libminiupnpc.so.5 /usr/lib/libminiupnpc.so.10
5 At this point I’d probably go in to your nubits folder and run ./ARMnudv5.4 I think that’s the filename you downloaded in step 1?
You’re probably going to get some errors here. Post them up here (or copy them to google, this is pretty much how I got mine running). Still post anything up here and we can tidy this guide up in the end so there’s a really easy way for people to install.
I’ll be in and out the house today but I’ll keep an eye on this and help when i can 
Oh and anybody that knows more about this than me please feel free to correct me.