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Simple Air Sensor simple-air-sensor

The Simple Air Sensor is a prototyping and onboarding kit for study design around air sensing. It is also part of an effort to develop an open source project and community that functions similarly to #PurpleAir, so that, over time, people can transfer the expertise they've developed as #PurpleAir users regarding installation, organizing, communication, etc to an open source ecosystem. In this way, this kit offers an "offramp" from a corporately controlled, closed source project that lacks public forums for asking and answering questions, or for organizing and advocating around the data collected. **NOTE: The colored light displayed by this sensor is not related to the [Air Quality Index (AQI) colors]( in any way.** **** ## Uses * to see immediate qualitative differences in air quality at low cost; by displaying a realtime colored light readout, this kit supports explorations into how the particulate sensor used in the closed source #PurpleAir responds to varying air conditions * to build familiarity with the electronic components used in air sensors without having to program * to use in groups (with 3+ sensors) to plan out placement of a #PurpleAir or other more expensive sensor, for example with consideration for wind direction and spacing ### Context This project emerged from observations that while many people share an understanding of the importance of "right to know" laws and of the purpose that transparency serves in a society, here is much less awareness of the fragility of technology, and the (inadvertent) gate-keeping role of expertise that leaves people without a pathway to "knowing how they know." This project is part of a longterm effort to encourage a culture of empiricism. ### More about what's in the Simple Air Sensor This sensor circuit uses the same type of particle detector as the #PurpleAir sensor, but only one as compared to #PurpleAir's two; does not include a temperature, humidity and pressure sensor as the Purple Air does; and instead of logging either to the cloud or to the device itself, it displays a red/yellow/green light that illustrates the PM2.5 levels it detects without converting into an Air Quality Index (AQI). ### This project is part of an ecosystem Quite a few people have built simple open source, Arduino-based devices around the cheap #plantower particulate air sensor [datasheet](, see: * @julieta's work on (and [blog post]( * @guolivar's work: and blog * This is a version that is easy to assemble (no soldering, just push wires into a breadboard), and comes pre-programmed. We also offer it [assembled and ready to plug in in the Public Lab Store]( ""). **Parts List** 1. 1 [Arduino]( 2. 1 [RBG LED Light]( "") 3. 1 [Sensor]( "") with cable[]( 4. 1 [Breadboard]( ## Activities [notes:grid:activity:simple-air-sensor] <a class="btn btn-primary" href="/post?tags=activity:simple-air-sensor,air-quality,simple-air-sensor,seeks:replications&title=How%20to%20do%20X">Add an activity</a> or request an activity guide you don't see listed ## Questions [questions:simple-air-sensor] **** [![IMG_20190304_170244_490.jpg](/i/30002)](/i/30002?size=original) [![55894473-266f0280-5b88-11e9-9714-f945378af5fc.gif](/i/35143)](/i/35143?s=o)

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