## Summary
Satoshkey is a pay-to-IoT platform that triggers physical devices via Bitcoin Lightning payments. This demo activates a model railway with a 100 sat payment (~$0.06).

## How it works
→ A QR code is displayed next to the model railway
→ Scan with any Lightning wallet
→ Send 100 sats (~$0.06)
→ Raspberry Pi receives the payment instantly
→ GPIO triggers the Satoshkey relay card
→ Locomotive starts rolling

## The Stack
- Raspberry Pi (any model)
- Satoshkey relay card (self-developed, available at cost price)
- payTolo — Lightning payment listener, runs locally on the Pi
- Any Lightning wallet (demo uses Wallet of Satoshi)

## Key Features
✔ No cloud
✔ No subscription
✔ No 3rd party dependencies
✔ Open source
✔ Easy configuration via web interface
✔ GPIO commands configurable directly

## Demo Video
https://youtube.com/shorts/EU6Y0sRr3mE

## More Info
satoshkey.com