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Comments

Author Comment Last activity Moderation
MadTinker "We take two different samples: one sample is used for local chemistry analysis (alkalinity, pH, hardness, ...). That sample is collected typically ..." | Read more » about 3 years ago
MadTinker "Nice explanation. I do this a few times a month and this is the same procedure accepted in Colorado. The one minor difference is the option to use ..." | Read more » about 3 years ago
MadTinker " @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 » almost 4 years ago
MadTinker "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 » almost 4 years ago
MadTinker " @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 » almost 4 years ago
MadTinker "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 » over 4 years ago
MadTinker " 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 » over 4 years ago
MadTinker "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 » over 4 years ago
MadTinker "@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 » over 4 years ago
MadTinker "@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 » almost 5 years ago
MadTinker "@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 » almost 5 years ago
MadTinker "@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 » almost 5 years ago
MadTinker "@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 » almost 5 years ago
MadTinker "spectrophotometric technique: Ground and river water quality monitoring using a smartphone-based pH sensor " | Read more » almost 5 years ago
MadTinker "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 » almost 5 years ago
MadTinker "I would add the following: alkalinity, hardness, and perhaps ORP " | Read more » about 5 years ago
MadTinker "@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 » over 5 years ago
MadTinker "@shanlter I've gotten everything connected and the initial tests are good. " | Read more » over 5 years ago
MadTinker "@shanlter No worries, things will work out fine. I won't be at the Barnraising, I'm already committed to attending a training class for Colorado Ri..." | Read more » over 5 years ago
MadTinker "@rockets Well.... a lot of possibilities for lessons learned. The good news is that between binges of travel, I spent a bit of time getting (somewh..." | Read more » over 5 years ago
MadTinker "@shanlter Thanks for the tip about Kyoritsu Labs. I'll check them out. " | Read more » over 5 years ago
MadTinker "@rockets Got the cables today. Thanks! " | Read more » over 5 years ago
MadTinker "@rockets Have you had a chance to check on the cables for the isolation boards? I very (very!) much appreciated the loan of the two boards, but wit..." | Read more » over 5 years ago
MadTinker "@rockets Yeah, I was going too fast and assumed that the parts list was good. I still need to order the ORP SEN0165. If you can tell me the SKUs fo..." | Read more » over 5 years ago