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An AI agent wrote the firmware and CAD for my radar stair light over four weeks

Over four weeks of evenings, an AI agent wrote the firmware, the live web chart, the Node-RED automation and the enclosure CAD for his radar stair light, driving a live Fusion 360 session through its scripting API. He reviewed, printed and measured, and the second half of the video lists what the agent got confidently wrong, including a radome gap that landed on exactly a quarter wavelength.

How it works

  1. The agent writes the sensor firmware
  2. Builds a live web chart of radar readings
  3. Writes the Node-RED automation
  4. Designs the enclosure in Fusion 360 through its scripting API
  5. He prints, measures and reviews
  6. He catches the agent's confident mistakes, including a quarter wavelength radome gap

Why it’s worth knowing

The agent did not just write code. It drove a CAD program live and designed the physical case, and its mistakes were measurement level, not spelling level.

Where it’s from

Summarized from a public post on youtube.com. See the original ↗

Upgraded prompt

A ready-to-use prompt for this idea, built from research on what makes AI agents do the job right: who the AI should be, the exact steps, and a check to make sure it was done the way you wanted.

1Who the AI should be
2The prompt, with the steps
3The check when it’s done
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