Bill of Materials

This document contains all the information you need to purchase everything needed to assemble the RasQberry Two Platform. When fully assembled, you will have a functional and detailed model like this one!

The Required Components section provides a handy list of every component needed for the basic model as well as any optional additions.

The Bill of Materials section organises every component into an easy to read table with accompanying important information such as cost, quantity and purchase links.

Contributors

The following people have contributed to the development of the documentation:

Luka Dojcinovic, Andy Stanford-Clark, Eric H Jenney, Jan-Rainer Lahmann, Sascha Schefenacker

You can contact any of us with questions, concerns or suggestions for changes to the hardware specs and the assembly guide.

Guiding Principles

These are the key tenets that we strive to follow when designing and assembling the hardware of the RasQberry Two.

1. The RasQberry Two platform will be an Open Platform that anyone can access and anyone can contribute to. All code provided, along with the 3D models and the hardware assembly procedure, will be open source.

2. Two tiers of the project will be provided; Core and Optional. The Core tier will be all the necessary components needed to create the base RasQberry Two model, with an emphasis on making it as cost effective and easy to procure as possible. The Optional tier will include optional components that enhance the functionality of the model if the user would like to expand on the Core tier.

3. The RasQberry Two should be easy to procure; the components should be readily available and different store page links should be provided for people around the world.

4. The RasQberry Two should be easy to assemble; someone with little to no prior hardware experience should be able to assemble it by following the instructions.

5. There should be no soldering required to assemble the RasQberry Two.

6. When possible, the RasQberry Two should faithfully recreate the real world quantum computer it is based on.

7. The RasQberry Two should serve as a fun and creative way to educate about quantum computers and how they work.

Required Components

Core Components:

The following core components are necessary to create the base functioning model of the RasQberry Two. It includes all the components needed for the enclosure model, the LEDs and the operation of the Raspberry Pi at the heart of this project.

Raspberry Pi:

• Raspberry Pi 5 2GB or Raspberry Pi 4B 4GB

  • 2 GB of RAM for the Pi 5 is enough for most demos. For the Workshop & Qiskit Server with a group, take 4 GB or more: up to about 2 participants can run code at the same time on 2 GB, 8 on 4 GB and 15 on 8 GB.
  • The Pi 5 is recommended for this project, however a Pi 4B can be used as well. It needs the official 15W USB-C power supply and its own cooling: the cooling configuration with a Pi 4B has not been tested, so a PWM fan mounted above the CPU is recommended. The LED panel is wired the same way (GPIO 18).

  • The hardware assembly guide will assume that a Raspberry Pi 5 is used.

• Raspberry Pi 5 27W USB-C Power Supply (5.1V, 5A; for a Pi 4 the official 15W USB-C supply)

• Raspberry Pi 5 Active Cooler

• MicroSD card: 128 GB high-speed (A2, U3) recommended. Minimum 16 GB without the Docker demos, 32 GB with them, 64 GB for two systems with safe updates (the A/B image), 128 GB for two systems with all Docker demos

• Right Angle USB-C Adapter

• Right Angle HDMI adapter (Make sure right direction)

LED Panel:

• WS2812IC 4×12 LED Panel (4 of them), or one 8×32 panel cut to 8×24 (recommended, see Jan's corner)

• Male to Female Breadboard Jumper Wires

• Filter screen for LEDs

Enclosure:

• An FDM 3D Printer or access to one

• PLA Filament

Note: Multiple colours of PLA are needed to achieve the desired look. The specific colours and total amounts of PLA have been listed in the BOM below.

Miscellaneous:

• Magnets

• Nuts and Bolts

• Screws

3D Model Files:

The 3D Model STL files for the RasQberry Two Platform can be found here. The RasQberry Two's Model is divided into the following sections: The Wall, The Floor, The Cryostat and the RTEs. The filament colours and the amount needed for each section of the model can be found in the table below, in the row labeled: 3D Printer Filament.

Optional (Nice to Have) Components:

The following components are optional. They are not required for the core functions of the RasQberry Two, but they can enhance the experience and provide features such as portability and extra illumination.

• Geekworm X1203 UPS (Uninterruptible Power Supply)

• Battery pack holder

• 18650 Batteries (2 of them)

• USB-C Power Switch

• LED Ring for Cryo-illumination

Bill of Materials

Core Components BOM

Note: The prices listed are accurate as of December 12, 2024.

Shopping Tip: In most cases, it is cheaper to buy all of the Raspberry Pi components from PiShop instead of Amazon. The following components can all be purchased with one order from PiShop for a total of US $85.90:

• Raspberry Pi 5 2GB
• Power Supply
• Active Cooler
• SD Card
• Micro HDMI to HDMI Adapter
• Breadboard Wires

Optional Components BOM

Note: The prices listed are accurate as of December 12, 2024.