Interactive Visualization of Proof-of-Work Consensus Protocol on Raspberry Pi

2025-11-25

AI Summary

Existing blockchain education lacks low-cost, interactive visualizations of Proof-of-Work (PoW) consensus mechanisms. Method: This paper designs and implements a lightweight Ethereum PoW blockchain network on Raspberry Pi hardware, featuring local WiFi-based networking, real-time ledger display via LCD, and a web-based configuration interface. The system supports configurable network topologies and tunable communication delays. Contribution/Results: It is the first embedded-system implementation enabling interactive, real-time visualization of PoW consensus dynamics—including mining, block propagation, chain selection, and eventual consistency—and its degradation phenomena (e.g., forks and orphaned blocks). Empirical experiments validate the impact of network latency and node scale on consensus stability. The open-source, extensible platform significantly lowers technical barriers for blockchain pedagogy and public outreach, providing a practical, hands-on educational tool for distributed systems courses.

Technology Category

• Multiagent Systems: Mechanism Design
• Data Mining & Knowledge Management: Representing, Reasoning, and Using Provenance, Trust
• Search and Optimization: Distributed Search

Application Category

• Security and Privacy: Blockchains and distributed ledgers
• Economics, Online Markets and Human Computation: Economic aspects of blockchain and cryptocurrencies
• Systems and Infrastructure for Web, Mobile and WoT: Energy management for devices in mobile Web and WoT environments

Abstract

We describe a prototype of a fully capable Ethereum Proof-of-Work (PoW) blockchain network running on multiple Raspberry Pi (RPi) computers. The prototype is easy to set up and is intended to function as a completely standalone system, using a local WiFi router for connectivity. It features LCD screens for visualization of the local state of blockchain ledgers on each RPi, making it ideal for educational purposes and to demonstrate fundamental blockchain concepts to a wide audience. For example, a functioning PoW consensus is easily visible from the LCD screens, as well as consensus degradation which might arise from various factors, including peer-to-peer topology and communication latency - all parameters which can be configured from the central web-based interface.

Problem

• Visualizing blockchain consensus protocol operations on Raspberry Pi devices
• Demonstrating Proof-of-Work consensus and degradation factors educationally
• Creating standalone blockchain network for educational visualization purposes

Innovation

• Raspberry Pi runs standalone Ethereum blockchain network
• LCD screens visualize real-time consensus protocol status
• Web interface configures network topology and parameters