index.md

layout	default
title	Home

Open-source, open-hardware

Firefly is a crypto-native device for Ethereum
Designed to be modified and customized

View on Github Get a Firefly

➜ see you IRL at DevConnect 2025

Built for Ethereum developers

Open Everything

Both hardware and firmware — all open source and ready to be customized

Run Custom Firmware

Modify Firefly to run your own logic — perfect for prototyping dapps or tools.

Human-readable Call Data

Use Firefly to securely execute Ethereum transactions or sign messages.

The Firefly Pixie DevKit

A compact hardware device for signing transactions, attestations, and games.

• 🧠 Open-source firmware
• 🛠️ Flashable via USB-C
• 🎮 Small, durable form factor
• 🔒 Built for secure signing

Request a free Firefly DevKit

Getting Started

1

Connect your Firefly

Connect via USB-C and access your Firefly from your browser on firefly.box/flash.

2

Flash Your Firmware

Use the Firefly Flasher to select and install the latest Firefly firmware in seconds.

3

Start Signing

Sign transactions and messages, play games, build dapps, or launch your own Ethereum-native tools.

✨ Want your own Firefly?

We’re giving away Firefly DevKits to Ethereum developers — find us at Ethereum conferences.
Request a free Firefly DevKit

<script> document.querySelectorAll('.faq-question').forEach((question) => { question.addEventListener('click', () => { const parent = question.closest('.faq-item'); parent.classList.toggle('active'); }); }); </script>