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Looking inside and cleaning out 2 years of dust from a popular PLANTOWER (攀藤科技) low-cost dust sensor (model PMS7003) capable of counting individual dust particles by size using laser scattering to calculate a metric of μg/m³.
00:00 - Intro
01:37 - Design Differences
03:25 - Optical Operation
05:39 - PCB Analysis
08:17 - Cleaning
10:45 - Reassembly
11:17 - Outro
REF: WT-YT-V-3