Stacking multiple Raspberry Pi’s

For the Raspberry Pi cluster I wanted to make sure that they are neatly stored to keep them easy to reach.

Why nicely storing them is important

Each Raspberry Pi requires a power and network cable. When using a single raspberry pi the cables are not an issue but I am planning to use five as a baseline for my cluster. These cables can quickly start to become messy and make the cluster hard to reach.

Stacking the Raspberry Pi’s

Therefore I have selected a solution that would allow me to stack the Raspberry Pi’s on top of each other.

Image taken from aliexpress where I purchased the item from

This case allows excess heat to be vented through the sides which many case designs do not account for. Since I plan to be using the Pi’s extensively they will likely be running quite hot.

I plan to stack six raspberry Pi’s on top of each other so I have purchased three of these (two stacked) products.

Building a Raspberry Pi cluster

dsc_0525Today’s blog marks the official start of my Raspberry Pi cluster project. Here I will be documenting the process of assembling, building, and running a small cluster. This blog will include both code snippets,  hardware diagrams and the results of various projects using the cluster.

Aims of the project

The Raspberry Pi cluster will be looking into distributed computing from both a hardware and software perspective. Some of the smaller projects planned include:

  • Youtube playlist syncing and download
  • Dynamic task management and distribution
  • MD5 hash calculators
  • Realtime Reddit thread analysis

But why a Raspberry Pi when it lacks power/ram/etc

Many of the tasks I am planning for the raspberry pi can be run faster and more easily on a single computer. My (5 year old) laptop will have more RAM and processing power than the initial cluster. If I was going for pure power I would run these tasks on a GPU. However the cluster is to experiment with the process of writing and working with a distributed environment.

Part of the reason why I have chosen a raspberry pi is that it is readily available, relatively cheap, and there is a lot of  support for it to run Linux. I am planning on running Raspbian Jessie PIXEL to begin with with the possibility of switching to full on Debian or Fedora later.

First steps to a Raspberry Pi Cluster

Already I have one Raspberry Pi 1 Model B Rev 2 which I am going to start developing software for while I collect the other parts. During this time I will search around for a number of raspberry Pi’s. My preference will be for the older versions so that I may purchase more of them cheaply.

Powering them is going to be an investigative point as I dont want to power them using multiple Raspberry Pi cables as these are costly in larger numbers and will occupy lots of power sockets.

As I am expecting to buy a couple different Raspberry Pi versions I am going to look for Micro SD cards which come with adapters. This is because Raspberry Pi 1 B models take a SD card and later models take a Micro SD card.