Simple Air Sensor

**The Simple Air Sensor is an arduino-based prototyping kit for studying air quality.** The SAS is a bare-bones air sensor, roughly modeled off of the [Purple Air]( system. This sensor circuit uses the same type of particle detector as the #PurpleAir sensor, but only one as compared to #PurpleAir's two. It does not include a temperature, humidity and pressure sensor while the Purple Air does. Instead of logging results to the cloud or to the device itself, the Simple Air Sensor displays a red/yellow/green light that illustrates the PM2.5 levels it detects, but it does not convert these results into an Air Quality Index (AQI). This is a version that is easy to assemble (no soldering, just push wires into a breadboard), and it comes pre-programmed. We also offer this kit [assembled and ready to go, straight out of the box]( ""). **Parts List** 1. 1 [Arduino]( 2. 1 [RBG LED Light]( "") 3. 1 [Sensor]( "") with cable[]( 4. 1 [Breadboard]( ## Air Quality Monitoring The Simple Air Sensor can be used: * to see immediate qualitative differences in air quality by displaying a realtime colored light readout. * to examine 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, with consideration for wind direction and spacing, for example. [![55894473-266f0280-5b88-11e9-9714-f945378af5fc.gif](/i/35143)](/i/35143?s=o) **NOTE: The colored light displayed by this sensor is not related to the [Air Quality Index (AQI) colors]( in any way.** #Design Goals Public Lab’s Simple Air Sensor is part of an effort to develop an open source project and community monitoring network that functions similarly to #PurpleAir . Our goal is to create an open-source repository of Purple Air user’s knowledge and expertise regarding installation and troubleshooting, while creating a space for Purple Air users to communicate their findings and organize with others within the air quality monitoring network. 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. 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 long term effort to encourage a culture of empiricism. 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 * ## Activities [notes:grid:activity:simple-air-sensor] Add an activity 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) ...

Author Comment Last activity Moderation
mjk200 "Map Exploration (15 mins): Provide a map of the community. Participants individually mark potential sensor locations based on intuition and local k..." | Read more » 4 months ago
warren "Also want to point at "telling a data story" by @renee and @bhamster:" | Read more » about 2 years ago
fooddieto675 "The telecommunications network allows the exchange of data. Here the computers are linked and the linked computers can share the data.excellent pos..." | Read more » about 2 years ago
warren "Looks great, Pat! Thanks for posting!! " | Read more » about 2 years ago
patcoyle "Instructions worked fine. Thanks to @warren and @bhamster. See results, in these screenshots: " | Read more » about 2 years ago
cfastie "The Plantower sensors require 4.5 to 5.5 volts. They work well with 5 volt Arduinos. They might not work properly with ESP8266 or ESP32 boards beca..." | Read more » about 3 years ago
bhamster "Hi @lilymccraith, nice to see you here! Great question about alternative parts for the Simple Air Sensor. I'm not sure of the answer myself, but w..." | Read more » about 3 years ago
lilymccraith "Can you use an ESP32 board instead of an Arduino nano? " | Read more » about 3 years ago
Stella_Brainard "Thanks a lot! " | Read more » over 3 years ago
amocorro "Love this topic! Just in time for the 50th year of the Clean Air Act in the US. Recommend this film --> Unbreathable: The Fight for Healthy Air..." | Read more » over 3 years ago
kgradow1 "This is so exciting! Tagging odor logging work by @imvec and @sarasage as well as obviously @nshapiro on indoor air quality and formaldehyde and @..." | Read more » over 3 years ago
zolfikarali5 "Perhaps the most now important and personally good place you’ll see on the system, it tells you what time you want to get to bed in order to make a..." | Read more » about 4 years ago
ritewayhtowing "optical emanation spectrometers (OES) which are either versatile or stationary. The entirety of our OES models offer a significant level of exactne..." | Read more » about 4 years ago
stevie "Hi! The EPA also has an Air Sensor Toolbox here: Someone mentioned the PurpleAir, there's more info on that..." | Read more » about 4 years ago
mimiss "I wanted to share this research note from @jiteovien on how to evaluate low cost air monitors. I've also been looking into this Pocketlab air sens..." | Read more » about 4 years ago
lizdahl "We use purple air monitors. You can find them at " | Read more » about 4 years ago
sarasage "Thank you so much for this detailed response! " | Read more » about 4 years ago
johnwick99 "Very Well Explained. " | Read more » about 4 years ago
warren "OMG this is the best, Scott :-) Hey i'll be in NOLA next friday for a week!  -- ig: @unterbahn | he/him/his On Thu, Jan 30, 2020 at 5:10 PM \&l..." | Read more » about 4 years ago
eustatic "I did this with a Lighter and a Public Lab card, thanks to Stevie. Set the Public Lab card on a tiny fire, put it out, let it smoke up the sensor,..." | Read more » about 4 years ago
566303 "We are having some issues with our sensor. It does turn green around clean air, but it only turns blue around unclean air (smoke, etc.), not red or..." | Read more » about 4 years ago
justcare "Thank you for sharing useful information. " | Read more » over 4 years ago
AyushC "Nice is very useful by the way check out this website What To Watch On Netflix " | Read more » over 4 years ago
imvec "Thanks Jeff. The question was not correct. The wiki page exists but has not cover o the methods page.If going to methods you need to click on purpl..." | Read more » over 4 years ago