Bitcoin savings for the next generation

An open source electronic piggy bank that accepts Bitcoin over Lightning. Teach your kids sound money with sats.

Build Your Own Buy Ready-Made

Free & open source. No subscriptions. Your keys, your sats.

Why satoshis?

Traditional savings accounts lose value over time. Bitcoin offers a different path.

The Problem

💸

Fiat savings lose value

The world's 2.4 billion children are growing up on a fiat standard. Even the US dollar has lost over 99% of its purchasing power against Bitcoin in the last decade.

Purchasing power decreases over time

The Solution

⚡

Save in satoshis

Give children a head start with sound money. Lightning Piggy makes saving in Bitcoin fun, visual, and educational - building financial literacy from an early age.

Sound money for future generations

Built for families

Everything you need to teach the next generation about sound money.

Lightning Native

Instant, low-cost, permissionless Bitcoin payments. Receive sats in seconds via QR code.

No Subscription Fees

Simple, low-cost hardware with no ongoing fees. Own it forever.

Open Source

Free and open source software. Inspect the code, modify it, make it yours.

Flexible Wallets

Connect to LNbits for self-custody or use Nostr Wallet Connect with any compatible wallet.

Low Power

Can be battery or solar powered. Perfect for a desk, shelf, or bedside table.

Kid Friendly

Simple, intuitive interface designed for ages 4-100. Visual balance display kids love.

How it works

Get your Lightning Piggy running in three simple steps.

Get the hardware

Source the parts yourself or buy a ready-made kit. Uses affordable, widely available components.

Flash the firmware

Use our browser-based installer to flash the software. No coding required - just plug-in and click.

Connect & save

Connect to wifi and link your Lightning wallet and instantly start receiving sats. Watch the balance grow on the display!

View the full build guide

In the wild

Join a global community of builders, educators, and families saving in sats.

See more community builds

"Lightning Piggy is bringing the adoption of bitcoin to young people in a real and meaningful way."

The Lightning Piggy Team

Built with love by bitcoiners

Bitcoin

Only

100%

Open Source

Hardware Versions

Global

Community

What People Are Saying

Hear from the Lightning Piggy community around the world.

Satoshi Guy

"This is exactly what Bitcoin family adoption looks like. If you're a father or family looking for a fun project that teaches your kids about Bitcoin, self-sovereignty, and saving, I can't recommend this enough. It's hands-on STEM learning meets financial education. Build it together, learn together, stack together."

Edi

"Piggy2piggy :) the boys are going crazy everytime something comes in. Best project I ever did, worth every minute and is the building block for our future to educate the youngest"