Building Your Own Ethereum Hardware Wallet For $5

vasa-the-mission (35)in #ethereum • 6 years ago

In this post we will build Firefly hardware wallet.

It’s an open-source, affordable, air-gapped hardware wallet for Ethereum you can build at home for around $5 in parts.

Here is a short video of its final working model.

Here are some of its features:

Low Cost: Build it yourself for about $5 with an Arduino, a 2.4GHz radio, an OLED display and a few odds and ends.
Air Gapped: Not connected by wires and cannot send wireless signals, keeping your private key safe from hackers.
Mobile Friendly: Works with any smart phone to prepare and send transactions or sign secure messages.

6 years ago in #ethereum by vasa-the-mission (35)

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