The miner to be installed comes as source files, which means that the program must be compiled into a binary before it can be run. To make a program, in this case BFGMiner, many dependencies are required.

Dependencies are additional software, or libraries the program needs in order to compile properly, as it has been developed using them to make the software more efficient. Hopefully you will be seeing the Raspbian desktop, so double click on LXTerminaland type in the following:

1) sudo apt-get update

2) sudo apt-get install autoconf autogen libtool uthash-dev libjansson-dev libcurl4-openssl-dev libusb-dev libncurses-dev git-core –y

This process will take a few minutes to complete.

Now you’re ready to start mining. To do this, providing you're using Slush’s pool, you’ll use the following command:

./bfgminer -o stratum.bitcoin.cz:3333 -O username.worker:password -S all

The username section is composed of two parts, the username that you use to login to the pool, and worker which is the worker name you gave when you registered the worker. Finally, the password that was set when you created the worker.

That’s a lot of numbers, so I’ll make some of them a bit clearer.
Current mining speed,
typically calculated in megahashes or gigahashes. The number of hashes a
second that can be calculated the better. A hash is an algorithm of
converting numbers and letters into an undecryptable set of characters.
So a miner is used to process millions of numbers in an effort to match
the hash to guess the original number. The more hashes that can be
processed the faster it is able to solve the problem.

Number of accepted shares.
A share on a pool is to show the miner has successfully worked out a
given problem, so the more shares you can process the better your reward
from the pool.

Detailed information on accepted shares and pool updates.
This is a running log of what is currently happening with the miners
and basic pool information, such as messages of updates and when new
blocks are found.

More information can be found at the BFGminer github site.

Following these steps will leave you with a very energy efficient bitcoin miner, as a Raspberry Pi only uses four watts of power, and a miner is typically 2.5W. Mining used to be done with computers consuming over 700W for the same process so to make a jump in savings helps repay the cost of the hardware we are using.

All there is to do now is to sit back and watch the money slowly build up. Though it is important that you understand that Bitcoin value fluctuates wildly, it is extremely volatile, so invest at your own risk.

You can also put up LCDs. Connect more Pis for getting better speed :D

For more information there are a number of websites and forums available, such ashttps://bitcointalk.org/,to help get you started.

https://computers.tutsplus.com/tutorials/how-to-create-a-raspberry-pi-bitcoin-miner--cms-20353

Requirements

In order to mine Bitcoin, you will need:

• A pool account
• Bitcoin Wallet
• Raspberry Pi
• Raspbian image SD card
• USB Bitcoin miner

Creating an Account

There are four things you need to do:

1. Download a
   bitcoin wallet
2. Create a pool account
3. Set up payment
4. Set up workers

Download a Bitcoin Wallet

A wallet is a program that sits on your computer and gives you a wallet address,
this is a unique string of numbers and letters that you will use to
receive bitcoins. Download the client for your computer from https://bitcoin.org/en/download

After installation, you will have to save a file called wallet.dat, keep this file safe, as this
contains your unique wallet address within it, including all bitcoins that you
will gain. If you lose this file, you cannot recover any bitcoins it contained.

Create a Pool Account

Once you have a wallet address, create a
pool account. A pool is a huge collection of other people working towards
gaining bitcoins. Due to the complexity of mining a bitcoin, it has become unrealistic
to solo mine–the act of processing millions of numbers to solve the block
problem. Working as a group, or pool, lets everyone have a chance of earning
some Bitcoin. There are many pools around, in this tutorial I’ll be
using one called Slush’s pool: http://mining.bitcoin.cz/

Set Up Payment

Once you have created a pool account, you'll need to enter your unique wallet address into the Bitcoin payout address.

Create Worker Account

Next step is to create a worker login account. Within your
pool account you have the ability to create something called a worker for each
of your bitcoin miners, so you're able to monitor them all separately just in
case one should fail.

Each worker has its own login name and password. Whilst
you are on My Account click Register New Worker and give it a name,
for example; worker, and a password.

Now you're ready to set your Raspberry Pi mining for
Bitcoin.

Setting Up the Raspberry Pi

Start with a fresh Raspbian install, if you don’t know who
to do this, read the tutorial How to Install NOOBS on a Raspberry Pi With a Mac.

If you plan on running more than one Bitcoin miner at the same time, it is best
to use a powered USB hub. Take into account the power rating as mining will
need a lot of power, as much as one mp per miner.

With your USB miner attached to your Raspberry Pi, let’s get
everything installed.

Installing Required libraries

The miner to be installed comes as source files,
which means that the program must be compiled into a binary before it
can be run. To make a program, in this case BFGMiner, many dependencies are required.

Dependencies are additional software, or
libraries the program needs in order to compile properly, as it has been
developed using them to make the software more efficient.

Hopefully you will be seeing the Raspbian desktop, so double
click on LXTerminal and type in the following:

This process will take a few minutes to complete.

Installing BFGMiner

Once all the dependencies have been installed, now it is
time to download and install BFGMiner, so type the following into LXTerminal. It’s
normal for these to take a few minutes to complete so some patience is needed.

You will be greeted with a screen that looks similar to the following:

Start Mining Bitcoin

Now you’re ready to start mining. To do this, providing you're using Slush’s pool, you’ll use the following command:

The username section is composed of two parts, the username that you use to login to the
pool, and worker which is the worker
name you gave when you registered the worker. Finally, the password that was set when you created
the worker.

If everything works, you will see the main
screen that will look similar to this:

That’s a lot of numbers, so I’ll make some of them a bit
clearer.

1. Current mining speed, typically calculated in
   megahashes or gigahashes. The number of hashes a second that can be calculated
   the better. A hash is an algorithm of converting numbers and letters into an undecryptable
   set of characters. So a miner is used to process millions of numbers in an
   effort to match the hash to guess the original number. The more hashes that can
   be processed the faster it is able to solve the problem.
2. Number of accepted shares. A share on a pool is to
   show the miner has successfully worked out a given problem, so the more shares
   you can process the better your reward from the pool.
3. Detailed information on accepted shares and pool
   updates. This is a running log of what is currently happening with the miners
   and basic pool information, such as messages of updates and when new blocks are
   found.

https://learn.adafruit.com/piminer-raspberry-pi-bitcoin-miner/initial-setup-and-assembly

What you'll need: