⚡ Bitcoin Hardware · Always On · Binance Live Feed
A display that pulls live Bitcoin price from Binance and shows your net worth in real time. No app. No subscription. No bullshit. Built for bitcoiners by a bitcoiner.
100% OPEN SOURCE FIRMWARE Read every line of code on GitHub ↗Hardware
What it does
Enter your BTC amount in the firmware config. The device multiplies it against the live Binance price and shows your exact net worth, always current.
Provide your extended public key in the config and the device automatically pulls your actual on-chain balance — no private key, fully non-custodial.
Don't want to display holdings? Run it in price-only mode. Live BTC/USD from Binance WebSocket, 24h change, clean and minimal.
Not a 60-second poll. The firmware opens a persistent WebSocket to Binance. Price and net worth update in real time, continuously.
No fan. No moving parts. No noise. Under 500mA on USB-C. Runs on any USB brick, 24/7, indefinitely.
Fully open source on GitHub. Flash your WiFi credentials, BTC amount, and display mode yourself — straightforward setup with the Arduino IDE.
Setup
Connect any USB-C power source — a phone charger, laptop port, or wall brick. The device boots instantly.
On first boot, the display walks you through joining a temporary Wi-Fi setup network. From there you enter your home Wi-Fi, BTC holdings, display mode, and anything else — right from your phone's browser.
The device restarts and starts pulling live data. Your net worth, on your desk, always on.
The maker
This is a one-man operation, run by a bitcoiner for bitcoiners. No VC money, no team, no warehouse — just a passion project that I hope stacks up on your desk as a daily reminder of why you're here.
Find me on X at @sndbtc. DM me with questions, custom requests, or just to talk Bitcoin.
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