Sensors
sensors

Relatively inexpensive, transportable and deployable sensors are produced all over the world for a variety of analytes. Broadly defined, sensors respond to a physical or chemical property, providing an interpretable output. For our purposes, a main distinction of a sensor versus a sampler is that sensors do not require laboratory-based analyses, and provide outputs in near-real time. Though we often think of sensors as part of the electronics field, plenty of analog sensors have been available for decades. Common analog sensors include things like mercury thermometers and classic barometers. Common digital sensors include things like voltmeters. In Public Lab, we're interested in a broad variety of sensors, both analog and digital, designed for measuring chemical and physical properties in air or water. ###Air Sensors There are a ton of different air sensors on the market these days, with common analytes including carbon monoxide (e.g. smoke detectors), temperature, humidity, particulate matter, and more. Some of these sensors require a digital interface with a controller and data logger, others are analog. Please see more information [here](/wiki/air-sensors) and check out air sensors in the table below. Please add more sensors that you've used! [embed table] ###Water Sensors Water sensors are available for several analytes, such as salinity, pH, and depth. Like air sensors, water sensors may be digital or analog. Any digital water sensors that are meant to be deployed will require water-tight enclosures for the electronic components. Please see more information [here](/wiki/water-sensors), and check out and add more sensors to the table below. [embed table]...


Author Comment Last activity Moderation
fxp007 "Could you share some info about the light sensor you choose? " | Read more » over 4 years ago
dallastxroofingpro "good article " | Read more » over 4 years ago
silentsairam "Manali village (PM10 particles): The thermal power plants at the proximity of 2km that produces more gases and mixes in the air we breathe. BC, Br..." | Read more » over 4 years ago
kgradow1 "This is wonderful, thank you for posting. Do you have any sense of what caused the PM 2.5 spikes in Velachery Res. Area and Alandur Bus Depot 2.5,..." | Read more » over 4 years ago
subir "Thanks @Liz ! I will be happy to share any details required for building it. Wouldn't it be wonderful to see pollution pattern at your place! " | Read more » over 4 years ago
liz "This is fascinating @Subir, i hope to build a device like yours and collect data to share from North Carolina, USA " | Read more » over 4 years ago
janulr "Put all inside a 1" plastic tube and fill it with 3M 8882 gel is most likely the simplest and cheapest way to get it waterproof. " | Read more » almost 5 years ago
mimiss " @mimiss has marked @amallozzi as a co-author. " | Read more » almost 5 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 » almost 5 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 » almost 5 years ago
cfastie "I have not heard of anyone using a microcontroller (Arduino or ESP board) to read data from an SD card. But maybe it is possible. A more common str..." | Read more » almost 5 years ago
amir_hudsonconsulting "My goal is to log data to an SD card, and store the data locally on the SD card. Is it possible to connect a mobile device via Bluetooth and read t..." | Read more » almost 5 years ago
yp1080030 "CLICK HERE " | Read more » almost 5 years ago
cfastie "I haven't tried that Feather combination. I have also never seen a list of Feather-Featherwing combinations that are incompatible. So I assume it w..." | Read more » almost 5 years ago
amir_hudsonconsulting "Hi I'm wondering does anyone know if you can stack the Adafruit Feather M0 Bluefruit LE with the Adalogger featherwing? My reason for wanting to do..." | Read more » almost 5 years ago
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mimiss "When discussing ways to make the blinking light easier to read/a bit more accessible at last night’s event we flirted with the idea of 3 LEDs that ..." | Read more » about 5 years ago
warren "Maybe we could do both sound and light? That way it is adaptable for different abilities too. I don't know if we could have one port drive a light..." | Read more » about 5 years ago
mimiss "Love this build and excited to work more with these sensors. Thanks for putting together such great instructions. I had a chance to work with one ..." | Read more » about 5 years ago
warren "So, i realized entering control-shift-; in a google spreadsheet enters the exact time/date in a cell. Maybe we can modify the Arduino code to send ..." | Read more » about 5 years ago
charlotte_clarke "Yeah my comment came out odd due to markdown -- the underscore is present in both the Arduino code and the script. I was wondering whether it was ..." | Read more » about 5 years ago
wmacfarl "The script will miss substitutions if the data is coming in too quickly -- I put a bunch of delays in the code to slow it down to a point where it..." | Read more » about 5 years ago
warren "That is really odd. I tried a couple other things but can't figure out why this is happening. In theory it should just be pressing the tab key betw..." | Read more » about 5 years ago
warren "Hmm, the script is: function onEdit(e) { var val = e.range.getValue().toString(); if (val.indexOf('_now') !== -1) { e.range.setValue(Dat..." | Read more » about 5 years ago