<p><span class="h-card" translate="no"><a href="https://donotsta.re/users/mei" class="u-url mention">@<span>mei</span></a></span> hissssssssssssssssssss</p>

<p><span class="h-card" translate="no"><a href="https://urbanists.social/@serial" class="u-url mention">@<span>serial</span></a></span> Hmmm. Interesting. Yes, both the right edge and bottom aren&#39;t quite symmetrical with respect to pixelation. I&#39;d expect perfect symmetry with the usual circle drawing algorithms (e.g., Bresenham circle algorithm).</p>

<p><span class="h-card" translate="no"><a href="https://fosstodon.org/@deshipu" class="u-url mention">@<span>deshipu</span></a></span> I&#39;m kind of wondering if it&#39;s a way for the device (a gas pump) to visibly indicate a hardware/software fault of some kind. Perhaps like a warning light, but not one that would be easily informative to anyone except a knowledgable technician.</p>

<p>which rss/atom reader are you using (and why)?</p>

<p><span class="h-card" translate="no"><a href="https://mastodon.social/@dabeaz" class="u-url mention">@<span>dabeaz</span></a></span> The edges are not perfect, particularly on the bottom. Perhaps delamination by an air bubble or something pushing from behind?</p>

<p><span class="h-card" translate="no"><a href="https://fosstodon.org/@deshipu" class="u-url mention">@<span>deshipu</span></a></span> Oh maybe. It definitely looks like it could be a &quot;mode&quot; thing in software.</p>

<p><span class="h-card" translate="no"><a href="https://mastodon.social/@dabeaz" class="u-url mention">@<span>dabeaz</span></a></span> touch debugging enabled, and no touchscreen?</p>

<p>I realize this is kind of geeky, but I&#39;m always interested in &quot;failure modes&quot; of things. So, what would cause a persistent perfectly circular black spot in the middle of what looks to be a perfectly good display? (This has been here for weeks on a local gas pump. It&#39;s always there regardless of what&#39;s being shown).</p>

<p><span class="h-card" translate="no"><a href="https://mastodon.social/@wingo" class="u-url mention">@<span>wingo</span></a></span> the sensors differ a bit between various models, but basically it&#39;s power hungry because NDIR requires a lightbulb (incandescent. yes really. in the SCD30 thats what they use) and thermoacostic requires a heater</p><p>having eink, low power wifi/zigbee helps but your floor is set by the co2 sensor</p><p>for particles, i think it uses a tiny fan</p>