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# Water Quality Sensor water-quality-sensor

Author Comment Last activity Moderation
EdMallon "I had a project that needed some live data display, and looking for the cheapest low-power solution for our loggers lead me to the Nokia 5110 LCD. ..." | Read more » about 4 years ago
Paquicamus "I have done many calibrations to correlate Conductivity vs TDS. One thing that I have found out it will only work for one Creek, river or any surfa..." | Read more » about 4 years ago
warren "Awesome!!! " | Read more » over 4 years ago
MadTinker "Ran across this article that discusses at a high level the relationship between salinity, TDS, and conductivity. Reference . It specifically mentio..." | Read more » over 4 years ago
MadTinker "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 4 years ago
warren "@stevie - maybe this could at some point be a good kit for students to use? Pretty cool, @MadTinker !! Interestingly the TDS pen also converts to ..." | Read more » over 4 years ago
MadTinker "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 4 years ago
Ag8n "You hit the nail on the head with auto correct. Good luck with your project. " | Read more » over 4 years ago
MadTinker "@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 4 years ago
Ag8n "There are several other previous questions that discuss this. But crazy is is correct, all tds meters are conductivity meters. One side note- ther..." | Read more » over 4 years ago
cfastie "I agree that the DFRobot TDS sensor looks like a useful device at a good price. My lame understanding is that this and other sensors which purport ..." | Read more » over 4 years ago
warren "I love this idea. Here are some leads on connecting a TDS meter to an Arduino, if that's what you're interested in: https://forum.arduino.cc/index..." | Read more » over 4 years ago
warren "wow!!! This is very cool. Here's an amazon link: https://www.amazon.com/s/?tag=duc0c-20&url=search-alias%3Daps&field-keywords=tds%20aquarium " | Read more » over 4 years ago
Ag8n "I checked Amazon. There are several tds meters that also do conductivity for a price of under $20. Since a scientific model lists for about$1000,..." | Read more » over 4 years ago
Ag8n "Sorry. Truncated the internet address: Https://www.hydroponics.net/learn/debate_over_ec_and_tds.php " | Read more » over 4 years ago
Ag8n "Check out: Https://www.hydroponics.net/lear All tds meters are conductivity meters, but according to the article, they may not all use the same c..." | Read more » over 4 years ago
Ag8n "I think it is. Was hoping someone was more familiar than me. Different websites talk about charge and others about conductivity, which can be two..." | Read more » over 4 years ago
gretchengehrke "Hi @Ag8n, Do you know how the aquarium TDS meter works? Maybe it really is just a super cheap conductivity meter? " | Read more » over 4 years ago
EdMallon "Thanks xose! Its been a long road, and we documented the entire process on the blog over time, including the mistakes. Now we are working towards..." | Read more » over 4 years ago
xose "Guys, all of you specially Ed, this thread is awesome! " | Read more » over 4 years ago
EdMallon "We have finally published: A Flexible Arduino-Based Logging Platform for Long-Term Monitoring in Harsh Environments http://www.mdpi.com/1424-8220/..." | Read more » over 4 years ago
EdMallon "I try to keep the blog tightly focused on the logger build details. But this year, I felt that I had to say something a bit more pointed about the ..." | Read more » over 4 years ago
EdMallon "Like a great Hollywood franchise I finally released the prequel to that "Configuring I2C Sensors" post from a few months ago: Adding Sensors to an..." | Read more » over 4 years ago
donblair "Hi @gretchengehrke! Sorry for the much-delayed reply :) and thanks for the comment. I, too, liked this approach -- basically, using the differenc..." | Read more » almost 5 years ago