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Life & fun · November 11, 2023

SM

Send me an IRL message and watch it arrive

- This page is running directly on the Pico W in the stream, using microdot (but proxied out via cloudflare tunnel). - There's a buzzer that plays a sound as well but the stream has no audio. - There's a Pi Zero 2 W with a Camera Module 3 streaming the video. Streaming low latency video is painful. I tried mjpeg, Nginx+HLS/DASH, YouTube and Twitch. Twitch is definitely the easiest and best-performing. - There's still a few seconds delay between sending your message and the video updating.

Send me an IRL message and watch it arrive launched on November 11, 2023 with 41 votes, #1,178 of 4,332 launches that month and more than 90% of that year's launches. The site was not reachable when checked in September 2026.

In plain words

This project lets users send messages that appear on a physical display in real-time, viewable via live video stream. A Raspberry Pi Pico W runs the web interface while a Pi Zero 2 W with camera streams video to Twitch. Users submit messages through the webpage, which trigger a buzzer and display the text on screen. The system demonstrates low-latency remote interaction, though a few seconds delay exists between message submission and video update due to streaming constraints.

written from the facts on this page · September 2026

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