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
warren "TRRS plugs (4-pin plugs) are not super consistent, but this worked for me. I'll try to upload another pic with the exact pins of the jack also shown! " | Read more » over 4 years ago
warren "Here's a pic of a WebJack plug (using a 4-pin jack) attached to pins 3 and 6 of the #Simple-Air-Sensor, which has WebJack installed by default: ..." | Read more » over 4 years ago
cfastie "That's a great development. Thanks for alerting me to that. The key to this advance is knowing how to structure the KML code to define the color of..." | Read more » almost 5 years ago
cfastie "Low power operation: To run your data logger for a long time on small batteries, you can put the Arduino and other components to sleep between log..." | Read more » almost 5 years ago
pdhixenbaugh "@cfastie I have 6 weeks (weekends) to get this set up and running for the lake at my summer camp. I don't have the low power timer, but I am going ..." | Read more » almost 5 years ago
joaquinx "Dear @cfastie! How are you? Joaquin from Aerocene project here. One of our community members, Fede from Buenos Aires, has created a Python code tha..." | Read more » almost 5 years ago
ashokpkumar "Hi, need help in using this module. i tried using this code Deek2bme.txt but my SD card says card failed. its a 32 GB samsung card formatted with f..." | Read more » almost 5 years ago
crispinpierce " Hi Stevie, Thanks so much for carrying out these tests. The results seem logical given the particle sizes of the solids you tested (e.g., sugar cr..." | Read more » almost 5 years ago
warren " I'd love to combine this with a microscope activity to look at each of the powders for scale! " | Read more » almost 5 years ago
stevie " Not too long. Maybe 3-5 seconds " | Read more » almost 5 years ago
warren "@warren awards a barnstar to stevie for their awesome contribution! " | Read more » almost 5 years ago
warren "Wow, this is a really great activity! And great video!!! Did the cocoa take a while to clear out and return to green? " | Read more » almost 5 years ago
marsh_jasonh " Oh, that's awesome - That gives me the info I was looking for, thank you very much, really helpful! " | Read more » almost 5 years ago
cfastie "The specs for the TPL-5110 timer IC say it can time intervals up to 7200 seconds (2 hours). It seems unlikely that it could be extended beyond that..." | Read more » almost 5 years ago
marsh_jasonh " Obviously kind of an old article, but I am just getting into arduino and electronics in general. My question is I have a similar project to this ..." | Read more » almost 5 years ago
tahnok " I was thinking for that price I might be able to crack one open to harvest it for parts, or maybe hook up an arduino to the output somehow. BUT th..." | Read more » about 5 years ago
cfastie "Hi tahnok, Those inexpensive anemometers seems to be missing an important feature of the expensive Kestrel and other fancy anemometers. They do no..." | Read more » about 5 years ago
tahnok " Have you done any test flights with some of the ~20$ anemometers you can find on Amazon to compare with the Kestrel? " | Read more » about 5 years ago
warren " https://mapknitter.org/maps/solar shows an image like this, using a color mapping which is often used in thermal photography: " | Read more » about 5 years ago
Jorgelopez " This looks very interesting though " | Read more » about 5 years ago
barakkasan " Some say "partial color blindness" actually has more color intelligence than normal people you can see here: frontiersin " | Read more » about 5 years ago
liz " hi @MadTinker , could you add the YouTube link here? Looking forward to it! " | Read more » about 5 years ago
dbsnp " This is perfect. I ordered ten of these Arduinos and will start playing with them. Perhaps we can begin by the simplest which is logging and a co..." | Read more » about 5 years ago
cfastie "The standard (last generation) Arduinos are circuit boards with the ATmega 328p microcontroller chip on them. A common hacker exercise eight years ..." | Read more » about 5 years ago