Show HN: Digits – Encrypted calls from gutted vintage desk phones

Category: hardware

Tags: voip, encrypted-calls, raspberry-pi, go, hardware, retro-tech

Score: 7.5/10 (Innovation: 8, Technical: 9, Documentation: 8, Utility: 5)

Digits transforms vintage desk phones into encrypted VoIP devices using custom hardware (RP2040 + Raspberry Pi) and a Go-based signaling server. It combines retro aesthetics with modern security (DTLS-SRTP, WebRTC) and offers a complete self-hosting stack, making encrypted voice calls a delightful engineering project.

Target audience: hardware hobbyists, privacy enthusiasts, devops, embedded systems devs

Repository: https://digits.family · Go · AGPL-3.0 · 4 stars

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