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OpenAI Shows How Codex and GPT-Live-1 Can Power a Raspberry Pi Voice Display

September 23, 2026 at 13:58 EDT

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OpenAI published a developer showcase on September 23, 2026 describing how Sid Rampally used Codex, GPT-Live-1 and a Raspberry Pi to turn a 128 x 64 HUB75 LED panel into a voice-controlled assistant named Jack. The project moves a small wall display beyond a single-purpose flight tracker, letting it show weather, calendar information, subway arrivals, financial charts, messages, countdowns, images and custom animated scenes on request.

Sep 23, 2026 · OpenAI

A voice agent for a 128 x 64 LED wall

Codex helped wire, debug and migrate a Raspberry Pi assistant that uses GPT-Live-1 for live conversation and GPT-5.6 Luna for delegated research and tool work.

128 x 64

RGB frame size sent to the wall

24 kHz

PCM voice captured by the Pi

$0.05

per minute for the GPT-Live-1 voice layer

Pi services: voice and renderer

The panel is twice as wide as it is tall

128 px wide

64 px high

Scale: one block represents 16 pixels.

From voice to pixels

Voice capture
24 kHz PCM

→

GPT-Live-1
conversation

→

GPT-5.6 Luna
delegated tools

→

Renderer
RGB frames

What worked

Natural interruption handling let the user clarify requests while delegated research and rendering continued in the background.

What had to be fixed

The wall update failed on a follow-up request until recent conversation and earlier results were passed through the handoff.

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