Sidebar – a private ESP32 intercom for five kids, no accounts

Show HN: Sidebar – a private ESP32 intercom for five kids, no accounts

Based, Sidebar – a private ESP32 intercom for five kids, no accounts works in show hn launch.

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Hello all - Inspired by many who build/assemble for their daughters/sons, I took cue and assembled a two-way communication between my son and his friends. Nothing spectacular. Just basic stuff to talk.He is eleven and doesn't have a phone. I wanted him to talk to his friends without an account, a feed, or an algorithm in between, so I built five ESP32-S3 touchscreen units, one per kid. Tap a friend's name, their unit rings. Tap Everyone, they all ring.Each unit dials outbound to a relay I run, so no house opens a port. Audio is uncompressed 16 kHz PCM in 20 ms frames, AES-256-GCM with a fresh key per call, over UDP with an encrypted-WebSocket fallback. To be precise: encrypted to my relay, n

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Website: www.sundaradnus.ca/writing/sidebar-building-a-ham-radio-for-my-son