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 "Oh, oops, i see this isn't a duplicate at all, but split into three themes! My apologies, i am just always on the lookout to be sure our moderation..." | Read more » almost 6 years ago
warren "Ah, looks like maybe it was posted twice because the first was held in moderation (sorry, our anti-spam systems are unfortunate, but you wouldn't b..." | Read more » almost 6 years ago
warren " This looks tremendous. Very exciting -- thank you!!!! " | Read more » almost 6 years ago
warren " I think it's possible, yeah! I'm not sure how fast PWM is or how easily you can set the rate? " | Read more » almost 6 years ago
cfastie "Leslie, I will lend you anything you need. Tell me about your HEPA setup. You must already have a 5V Arduino, so all you need is three DuPont wires..." | Read more » almost 6 years ago
zengirl2 "I'm so excited to see this @cfastie. Love the play on words as always with the naming of the monitor. However, you may want to rename your research..." | Read more » almost 6 years ago
stevie "@stevie awards a barnstar to cfastie for their awesome contribution! " | Read more » almost 6 years ago
cfastie "Thanks Nick. It's good to know about the duplicate sensors. That's an intriguing engineering decision. Chris " | Read more » almost 6 years ago
nshapiro "I'm going to be loling about Poorple all night! Amazing work, chris! And yes, I believe Purple has two of the same sensors to catch any low hanging..." | Read more » almost 6 years ago
jywarren "Awesome! On Tue, Nov 27, 2018, 11:45 PM \<notifications@publiclab.org wrote: Public Lab contributor cfastie just posted a new research note en..." | Read more » almost 6 years ago
warren "Hi, any updates on the high humidity tests? Thank you! " | Read more » almost 6 years ago
warren "Thanks for the clarification! Would you mind changing it on this page as well? I appreciate your sharing of the plans, even if you aren't able to f..." | Read more » about 6 years ago
humanetechnologies "Hi @warren, thank you for the question and providing us the open-source hardware definition. After going through it, we agree that our MicrobeMeter..." | Read more » about 6 years ago
warren "@guolivar have you read over these reports and do they factor into your assessment of the Purple Air? Thank you both! " | Read more » about 6 years ago
warren "This is a GREAT post. Thank you so much!!! " | Read more » about 6 years ago
warren "Ah, yes, confirmed by @guolivar's post: https://publiclab.org/notes/guolivar/01-08-2018/thoughts-on-low-cost-air-quality-sensors " | Read more » about 6 years ago
warren "@warren awards a barnstar to guolivar for their awesome contribution! " | Read more » about 6 years ago
warren "Just compiling some quick links to where these parts can be found cheaply and easily: Sensor: $16.50 on amazon: https://www.amazon.com/Air-Qualit..." | Read more » about 6 years ago
warren "Quick update - the sensor in the Purple Air seems to be this one or one very similar, a laser based sensor with a fan -- the PMS5003 -- $30 shippe..." | Read more » about 6 years ago
warren "Hi, thank you for posting! This looks like a really interesting project; thanks for sharing. I wanted to ask for a clarification -- you mention th..." | Read more » about 6 years ago
stevie "Hi @BrandonFeenstra ! I had a group asking me about the Dylos this morning, so I went to the AQMD website and found the report for it like the one ..." | Read more » about 6 years ago
GreenFrogg "I don't have experience with the Purple Air. The page is an overview made by the Dutch institute of environmental health (RIVM). They coordinate. Y..." | Read more » about 6 years ago
stevie "@GreenFrogg I was checking out your list of sensors on this page and didn't see the Purple Air. Have you worked with it? what are your thoughts on..." | Read more » about 6 years ago
liz "This is so useful! Another imaginative concept brought to real world utility by Chris Fastie. If I ever have a well, I will install this to learn a..." | Read more » about 6 years ago