Here’s a project that brings a matteter sensor together with a Raspnerry Pi to create a DIY filtration system. Here’s more from Joyce Lin via hackster.io:
Connect a particulate matter sensor to a Raspberry Pi to trigger a DIY air filtration system. The PMS7003 particulate sensor measures the air quality and transmits data in a serial stream from the transmitter pin (TX) to the receiver pin (RX pin) on the Raspberry Pi.
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