I like your air particle sensor! Fan-forced design seems like it could be more accurate than my passive units. Do you mind if I ask which model it is?
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It’s this one. Looks like there might be a newer model now though! https://www.aliexpress.com/item/Laser-PM2-5-DUST-SENSOR-PMS3003-High-precision-laser-dust-concentration-sensor-digital-dust-particles-G3/32371229255.html …
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