MadTinker 14 research notes and 14 wiki edits | Joined over 3 years ago

BS in Mechanical Engineering, MS in Aero/Astro Engineering, PhD in Applied Math. Retired tenured Associate Professor of Aerospace and Systems Engineering and retired Distinguished Member of the Technical Staff at Sandia National Labs. Background includes, for example, forensic analysis of IED hardware and events, PI on the Mars Curiosity Rover (launch phase and power source), with current professional research focused on cyber security for high consequence digital systems. Professional artist blacksmith ( IronRain.us ) which supports his growing involvement in ecological risk characterization of mine waste. Specifically interested in sensors, etc associated with monitoring water quality downstream from mining runoff, e.g. heavy metals concentration.






Turbidity Sensor Assembly

by MadTinker over 1 year ago | 8 | 743 views | 2




USB bare wire power cable

by MadTinker over 1 year ago | 4 | 1,161 views | 3


Willow Creek Water Quality Monitoring

by MadTinker almost 2 years ago | 9 | 1,088 views | 7


DIY conductivity Sensors

roberts_ecofarm asked about 8 months ago

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Dissolved Oxygen Testing and Citizen Science

belkinsa asked about 9 months ago

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How do I choose a method for monitoring turbidity?

stevie asked about over 1 year ago

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Quantitative analysis of wood moisture

MarcioPamplona asked about over 1 year ago

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Modified TDS sensor as Conductivity Sensor?

MadTinker asked about over 1 year ago

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conductivity sensor electrolysis a concern in moving water?

MadTinker asked about over 1 year ago

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How similar is the code for the KnowFlow and the RIFFLE data loggers?

gretchengehrke asked about over 1 year ago

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STEM appropriate projects?

MadTinker asked about almost 2 years ago

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What is your favorite program to plot data from a data logger?

gretchengehrke asked about almost 2 years ago

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Just tried to publish a Replication of the KnowFlow and fail ...

MadTinker asked about almost 2 years ago

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Sensor: ORP versus PH

MadTinker asked about about 2 years ago

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data loggers for PH ?

MadTinker asked about about 2 years ago

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View these maps at MapKnitter.org »

Title Creation date Image

Comments

Comment Last activity Moderation
" @warren You know it's pretty sad when I don't catch things like this myself :smiley: I was referring to the raw data. " | Read more » 4 months ago
"I've successfully used the DFRobot TDS/conductivity sensor combined with the a Mini-Pearl system. The Coqui was much too noisy. My Arduino setup wa..." | Read more » 4 months ago
" @belkinsa I’d strongly suggest the Winkler test for monitoring DO. It’s easy, can be done reliably by 14+ yr old kids. Works on lakes, rivers, etc..." | Read more » 4 months ago
"A couple of clarifying questions: do you have a time period in mind for sampling before data collection/processing? do you have any form limitati..." | Read more » 8 months ago
" do not use DO sensor On a monthly period, at a number of sampling locations in the watershed, air/water temperature are collected and: DO, Ha..." | Read more » 9 months ago
"Just a quick update on the status of this project. Willow Creek is going through a couple of serious events. First, the stretch of the stream where..." | Read more » 10 months ago
"@cfastie FWIW I used a Kalman filter algorithm for my TDS analyses with data from a similar setup data logger setup. I believe that my original im..." | Read more » 11 months ago
"@youshen I think with the modifications that have been suggested, the particular RTC module that I've been using will work fine and support running..." | Read more » about 1 year ago
"@cfastie Thanks Chris, I'd had forgotten this particular mod by Ed Mallon, and didn't notice the mods on your modules. I need to go back and review..." | Read more » about 1 year ago
"@warren Thanks. Perhaps, but if the info in the link is true, the solution is just finding a new RTC module that runs at 5V. I misread the power re..." | Read more » over 1 year ago
"@Ag8n - yeah, pretty sure you're right about filtering. I also think there are some calibration issues that remain even with a perfect sample. Sti..." | Read more » over 1 year ago
"spectrophotometric technique: Ground and river water quality monitoring using a smartphone-based pH sensor " | Read more » over 1 year ago
"Ran across this article that discusses at a high level the relationship between salinity, TDS, and conductivity. Reference . It specifically mentio..." | Read more » over 1 year ago
"Confirm? Hmmm... well, I have two data points, both of which coincidently use the same multiplier on EC to get TDS. From discussions with folks wh..." | Read more » over 1 year ago
"DFRobot makes a Turbidity Sensor For Arduino (SKU:SEN0189). It's sitting in my forge right now and integrating it with a Mini-Pearl logger ( @cfast..." | Read more » over 1 year ago
"An quick update: The TDS sensor from DFRobots performs as describes. Very easy to connect to the MiniPearl logger. In general, it collects a voltag..." | Read more » over 1 year ago
"There are a number of publications in this area because of the increased use of renewables (e.g. wood) for heating and the increased fire danger th..." | Read more » over 1 year ago
"@Ag8n - yes, I saw the other discussion, but it had seemed to go on a tangent. ‘crazy’ @cfastie I think hits it right on the head (gotta love that ..." | Read more » over 1 year ago
"Yeah, that seems right. I should have thought thru it a bit more. " | Read more » over 1 year ago
"Thanks Chris (cfastie), That's an excellent point about checking the wires BEFORE soldering. I admit a bit of good karma was involved. Dave " | Read more » over 1 year ago
"I would add the following: alkalinity, hardness, and perhaps ORP " | Read more » over 1 year ago
"I’m still waiting on my Riffle and I’m a rank beginner so this response needs to be accepted with a grain of salt. I believe that what Chris said i..." | Read more » over 1 year ago
"@stevie I'd love to but this summer got away from us and there just isn't time or resources this year. I'm hoping to touch base with @warren in Den..." | Read more » almost 2 years ago
"I agree and was a little surprised not to find a tag. I've done elementary school STEM in a couple of major western cities. Maybe it's something to..." | Read more » almost 2 years ago






























MadTinker was awarded the Basic Barnstar by stevie for their work published in Willow Creek Water Quality Monitoring.



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