Nostr hardware signer kit: genuine LilyGo T-Display S3 (ESP32-S3, 1.9-inch color display) + 3D-printed case. Deliberately ships WITHOUT firmware and without keys — you flash the open-source firmware yourself in your browser.
The VibeSigner NSD-S3 keeps your Nostr key where nobody can copy it: on its own device. The key is generated right on the signer, never leaves it, and nothing is signed without a button press. Every note, every reaction, every private message shows up on the display first and waits for your approval. A key in a browser extension, by contrast, is a file on a computer that runs other people's code all day.
In the kit: a genuine LilyGo T-Display S3 (ESP32-S3, 1.9-inch colour display, two buttons, USB-C) and our 3D-printed case in white or sky blue. It deliberately ships without firmware and without keys. You flash the open-source firmware (Apache-2.0, github.com/TuvokSeed/nsd-s3) yourself in your browser at flash.flink.club: plug in the board, open Chrome, one click, about two minutes. No toolchain, no driver hunt. That way you never have to trust us; nothing secret ever passes through our hands.
During setup the device generates your key and shows you twelve words to write down, BIP-39 per NIP-06. The same words restore your identity on any device that follows the standard. On the signer the key sits encrypted behind a PIN. Signing and decryption happen over USB for web clients that support the signer, today flink.club; the protocol is documented, so other clients can add it without asking us.
Note: ships without a USB-C cable. The board is a standard dev board and the firmware is free; if you already own one, you only need the case. More about the project, the handbook and the dice seed at vibesigner.21drucker.farm.
