Conductivity Monitoring Recommendations

[Rob F]

Now this would be an update people would love, I get asked all the time, but yeah a little pricy, that's the main reason Ranjib hasn't supported it along with it not being open source.

Unfortunately my circuit won't read conductivity, apparently the circuits are similar but I think there are some differences and of course the code to calculate.

This is the circuit you would need, it works like the pH so you could basically copy and paste the pH driver and tweak for EC.

https://atlas-scientific.com/embedded-so...y-circuit/

One nice thing about these circuits, they output conductivity, TDS, salinity and specific gravity if probe is in salt water.

Sadly Atlas makes you buy a 2nd board to isolate the circuit which is required, you need to choose which one to support as they now have a USB version.

We have this style of board, it uses I2C like my pH circuit and the other circuits compatible with reef-pi. If this was used the ezoPh driver in reef-pi is setup for I2C like this.

https://atlas-scientific.com/carrier-boa...ard-gen-2/

In the last year or so they brought out this carrier board which IMO is the way to go however you won't be able to use the ezoPh driver as a reference as this one communicates different. They do say it works with Raspberry Pi and provide some USB drivers however I've personally never used them so not sure how easy it is to work with, I2C is easy. The reason I like these is I2C was never designed to leave a PCB without being converted to a differential signal. If multiple external I2C devices are added it could/will bring troubles. Reef-pi already needs pca9685, pH, possibly RTC, possibly the SHT31 they added (should have been a DHT22), possibly the ADC they added and now possibly the EC. This is a lot of I2C devices, anyone doing DIY and wants all these will likely have issues as there will be too much cable/connections, it's really setting people up for trouble.

https://atlas-scientific.com/carrier-boa...ier-board/