My New Bambu H2S Had Unhealthy Defaults
The first night I ran my new H2S, the printer room PM2.5 climbed into the EPA's Unhealthy range and stayed there for seven hours. The printer's carbon and HEPA filter was there the whole time, it just wasn't in the air path for PETG. Here's how Home Assistant caught it, the firmware setting that routes the exhaust through the filter, and how I got Home Assistant to tell me when it's on.
