I am still very new to Arduino and have tried almost every combination of word searches on this topic and have come up with less than favorable results.
I am an indoor gardener and am seeking the ability to monitor multiple pH probes and EC probes from just a single shield of each class (1 for EC, 1 for pH). However, I am finding there are roughly 2 manufacturers of pH and EC shields, and all shields appear to only monitor a single device which is great for fish tanks and swimming pools, but when looking for a hydroponic application, options are limited.
Does anyone know if it is possible to multiplex these shields so they can be set to monitor several probes in different locations? When I get my garden to where I want it, there will be as little as 7 different reservoirs, but more likely closer to 10. As it stands now, I will need to purchase 7-10 different EC shields and 7-10 different pH shields as well as 7-10 probes of each. As far as the probes, there are many more options from DIY to very inexpensive replacement probes and also a few stand alones that can fit the bill, but I am hung up on these shields only monitoring a single probe.
Can these circuits be expanded to include and accurately monitor more than just 1 probe?
TYIA
