Due to the lockdown situation we will most probably have to spent our holidays at home. So my wife ordered last week a large swimming pool. Could be setup in a few hours, but daddy has been elected to spent a lot of free time on keeping the water clean...
As a result I would have less time in the evenings for Node-RED developments... Which means it will be a real win-win situation if you guys can help me solving my problem
I'm a complete noob about water cleaning stuff. But I would like to use Node-RED somehow for helping me to keep my pool clean. So all help is welcome, but please keep in mind that I don't know anything about this topic!!! So please don't use too much expensive words ...
Some things that popup in my head, after reading quickly through some other discussions (which were way above my paygrade):
I suppose I need to measure the temperature of the water with some sensor (connected to a Raspberry!)?
I need to measure the pH. Is this sensor from @ghayne good enough, and can I wire that easily to a Raspberry? Unfortunately I don't have the knowledge or time to start experimenting with other hardware like Arduino, NodeMCU or whatever Or are there any other good (and affordable!!) sensors perhaps?
Is it doable to not only to measure the ph, but also control it? I see in another discussion that "Automatic pH control is extremely complex" so that is not encouraging. On the other hand found some open source projects like raspipool, but that is for HomeAssistant...
Are there any security precautions that I need to take into control? E.g. only control it during the night when nobody is swimming, or send alerts when the values are not safe, or ... I surely don't want to build any stupid things.
And the clock is ticking ...
Damn I thought that a swimming pool would be relaxing. Not
Altering PH levels of water can be tricky. I don't have first hand experience with it for swimming. But you can possibly get a run away where (say) it is low PH. Stuff is added to up the PH and next thing you know it is too high.
Probably not a good idea to do it in this scenario.
Temperature should be easy to measure.
Good luck! Enjoy it. It is coming on winter here and swimming pools are not exactly popular just now.
Yes, anything is possible, but for me that would be a definate no, no.
It's one thing to monitor the pH, but getting dosing wrong can have disasterous health consequences, and not worth the risk.
The chemicals involved are very strong.
I agree with Paul (@Paul-Reed), Monitoring is fine but controlling the pH is just not worth it.
Use indicator strips for monitoring pH and concentrate on getting the chlorine concentration right, which is very important.
I am pretty sure you know that, but when ordering a pH probe, take care that it is one which can be constantly in water and also keep in mind that the "cheap" pH probes have a limited life time and like to be in their buffer solutions