https://endemics.github.io/tags/valve/Recent content in Valve on Endemics blogHugo -- 0.164.0en-gbhSun, 19 Jul 2026 10:52:46 +0000https://endemics.github.io/posts/steam-machine-led-strip/Sun, 19 Jul 2026 10:52:46 +0000https://endemics.github.io/posts/steam-machine-led-strip/<p>(Claude helped with both the project and this post)</p> <p>It started with a spec sheet and a dumb question: <em>how tightly packed are the LEDs in the Steam Machine&rsquo;s front light bar?</em> It ended with a cloned kernel driver, a strings dump of the Steam client itself, and a from-scratch Linux kernel module driving a WLED replica. This is the story of everything in between.</p> <h2 id="act-1-what-can-you-learn-from-one-product-photo">Act 1: What can you learn from one product photo?</h2> <p>The Steam Machine&rsquo;s spec sheet gives you two numbers: <strong>17 individually addressable RGB LEDs</strong>, and a case that&rsquo;s <strong>156mm wide</strong>. Divide one by the other and you get a density - about 109 LEDs per meter, roughly one LED every 9mm. Simple enough, if you&rsquo;re willing to assume the strip runs edge-to-edge with zero bezel. It doesn&rsquo;t, of course. Nothing does. So the real question became: how much margin is there, actually, and can we figure it out without a teardown?</p>